About 1 results (1.08 milliseconds) Sponsored Links. What Is A Labeled Monocot … The PowerPoint PPT presentation: "Monocots and Eudicots (Dicots)" is the property of its rightful owner. Ø A leaf composed of: (1). Structure of Dicot Stem | Botany. Article Shared by. Monocot and Dicot (Eudicot) Seed Minilab Ref. P. 595-6 Materials iodine dropper bottles scalpel watchglass magnifying lens bean seed (soaked for 24 hours) corn seed (soaked for 24 hours) Instructions 1) Take one of each seed and place in the watch glass. But the endosperm resides separately from the cotyledon inside the seed. The seed cover basically helps to protect the embryo until it finds a proper location to germinate. Based on the number of cotyledons present in the seed, all flowering plants are classified into monocots and dicots. Inflorescence. Inside the seed coat is the endosperm and the embryo. Structure of a Monocotyledonous Seed. Show: Recommended. of a monocotyledonous plant ... Several important evolutionary adaptations (or conditions) occurred that helped to make the invasion of land by plants permanent. - Chapter 30 Plant Diversity II: The Evolution of Seed Plants * * * * * Figure 30.13 Exploring: Angiosperm Diversity * * * Figure 30.13 Exploring: Angiosperm Diversity ... Plant Responses to Internal and External Signals. Fruits: Parts and Classification ... ddarango. Dissected beans Figure 2. Seed Dissection Figure 1. In flowering plants, seed is defined as the mature ovule after fertilization. Anatomy of dicotyledonous and monocotyledonous plants: monocot. dicotyledon, or dicot. Seed Coat• AKA testa• The seed coat protects the embryo• Can be of varying thicknesses, depending on the seed type. Pollination ppt Brad McAllister. Flowering plants generally referred to as angiosperms, fall into two classes, based on the number of cotyledons or seed leaves, within their seeds. Leaf blade: also called leaf lamina is the flattened expanded part of the leaf chiefly composed of mesophyll tissue and vascular bundles. of 8. seed anatomy dicots parts of a seed seed structure parts of seed dicot part of the seed dicot seed seed parts structure of seed. ‘Monocot’ is short for monocotyledon, which refers to plants that have only one leaf arising from a germinating seed. Monocot Stem Sciencetopia. The seed: definition, types, seeds, structure, videos, solved. Roots, Stems, Leaves, Tissues BSC 2011L Review of difference, Reproductive Structures in Flowering Plants. Structure is used in classification Two main categories of flowering plants: monocots and dicots The two groups are distinguished on the basis of flower parts, leaf veins, and other structural features. Leaf blade: also called leaf lamina is the flattened expanded part of the leaf chiefly composed of mesophyll tissue and vascular bundles. And they’re ready for you to use in your PowerPoint presentations the moment you need them. Monocot plants normally have a weak stem, whereas dicots have a strong stem. Primary Structure of Dicot Root – Bean Root . Monocot And Dicot Seed. 1. Apart from the seed structure, monocots have leaves that are long, narrow and have parallel venation. Normal Monocot Stems 2. Isobilateral monocot leaf. Search for "monocot seed" in these categories. Seed. Monocotyledons and Dicotyledons . All Time. Structure of a Seed. - ... Gnetum, Ephedra, Welwitschia Species vary in appearance Some are tropical; others live in deserts having a deep tap root Gymnosperms Conifers Conifers: ... - Linum usitatissimum, seedling. Our new CrystalGraphics Chart and Diagram Slides for PowerPoint is a collection of over 1000 impressively designed data-driven chart and editable diagram s guaranteed to impress any audience. Internal Structure of Monocot Stem (Transverse Section, T.S.) Other common monocots include bamboo, sugar cane, gingers, lillies, orchids and grains such as rice, wheat and corn. 744 monocot seed stock photos, vectors, and illustrations are available royalty-free. Next. 2. Dicots (left) have two cotyledons. Dicots have two cotyledons. Image from W.H. Boasting an impressive range of designs, they will support your presentations with inspiring background photos or videos that support your themes, set the right mood, enhance your credibility and inspire your audiences. 3. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. MONOCOT VS DICOT Classes of Plants Two classes : Angiosperms and gymnosperms Angiosperm = flowering plants Gymnosperms = non flowering plants (usually involves reproduction through seeds) Monocot vs. Dicot Angiosperms (flowering plants) are divided into monocots and dicots As the zygote grows into the embryo, the first leaves of the young plant develop and are called cotyledons (seed … MONOCOT VS DICOT Classes of Plants Two classes : Angiosperms and gymnosperms Angiosperm = flowering plants Gymnosperms = non flowering plants (usually involves reproduction through seeds) Monocot vs. Dicot Angiosperms (flowering plants) are divided into monocots and dicots As the zygote grows into the embryo, the first leaves of the young plant develop and are called cotyledons (seed … Many of them are also animated. Monocots developed from plants with a single pore or furrow in the pollen, whereas dicots developed from plants with three furrows in their pollen structure. 6. This is best understood by studying their internal structure by cutting sections (transverse or longitudinal or both) of the part to be studied. Further differences between monocots and dicots can be seen in the structure of their three main parts: the roots, stems, and leaves. Figure \(\PageIndex{1}\): Monocots and dicots: The structures of dicot and monocot seeds are shown. When the seed is sown in soil a new plant appears from the embryo. - IB Biology Review Chapter 35: Plant Structure What are the two types of plants IB focuses on? Basal Angiosperms Monocot: 1 cotyledon Dicot: 2 cotyledons ... - Arguably the most diverse major extant plant group 260,000 living species 453 Families ... insects bats and birds 90% of existing species are flowering ... IB Biology Review Chapter 35: Plant Structure What are the. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. In a monocot, the pollen grain produced by the flower has a single furrow or pore through the outer layer. Primary structure of monocot stem – Maize stem The outline of the maize stem in transverse section is more or less circular. The coat around the seed is very important, as it protects the seed from various pathogens and insects. Dicot Leaf Cross Section (Dorsiventral Leaf) (Anatomical Structure of a Dicot Leaf- Ixora, Mangifera, Hibiscus) Ø Leaves are structurally well adapted to perform the photosynthesis, transpiration and gaseous exchange. Looks like you’ve clipped this slide to already. of 8. Plants, Insects and our Environment and How They Interact!!!! It is usually long and narrow, like a mature leaf. Dicot seeds have the same parts, but the difference is that there are two seed leaves inside, instead of just one. They also contain foods to nourish this living part in them. - Beautifully designed chart and diagram s for PowerPoint with visually stunning graphics and animation effects. Comparison of monocot (left, oat) and dicot (right, bean) gross anatomy. Normal Monocot Stems: I. Zea mays-Stem: ADVERTISEMENTS: T.S. Seed coat : A monocotyledonous seed is the one which has a thick seed coat. Isobilateral monocot leaf. Monocot and Dicot Stems: Type # 1. Structure of Dicot Seeds. Roots. Dicots (left) have two cotyledons. Flowering plants generally referred to as angiosperms, fall into two classes, based on the number of cotyledons or seed leaves, within their seeds. Monocot and dicot differ in their roots, stem, leaves, flowers and seeds. Nov 21, 2014 - This Pin was discovered by Sue Park. Anamalous Dicotyledonous Stems. You would find a similar pattern on the leaves of corn, wheat and rice. Monocotyledons and dicotyledons, also known as monocots and dicots, respectively, are two types of angiosperm plants. Open Vascular Bundles Structure & Diagram. In flowering plants, seed is defined as the mature ovule after fertilization. Discover (and save!) T.S Of Monocot Stem. Monocot and Dicot Leaf: Type # 2. Roots Monocots are known to have adventitious roots whereas dicots have a radicle from which a root develops. Eudicots- the largest group Laurales Magnoliales 2. Seeds Monocot One Cotyledon, PPT. Which of the following is NOT one of those changes? Labelled Diagram Of A Monocot Leaf spawwn de. The seed germination in the monocot embryo is hypogeal. Stems are often long and branching. Search for "monocot seed" in these categories. Plant Anatomy Root Stem Leaf St Louis University. Monocot seeds have one "seed leaf" termed a cotyledon (in fact monocot is a shortening of monocotyledon). * * * Figure 35.10 Exploring: Examples of Differentiated Plant Cells * * Figure 35.10 ... - Outline Evolutionary History Alternation of Generations Nonvascular Plants Vascular Plants Seedless Seed Angiosperms Monocots and Eudicots Flowers Evolutionary ... - Title: Chapter 29.4 Author: AliNate Last modified by: robert Created Date: 2/13/2011 10:00:54 PM Document presentation format: On-screen Show (4:3) Other titles. ADVERTISEMENTS: In this article we will discuss about the two typical dicotyledonous plants which been selected for the study of internal structure of stem with the help of diagrams. Grades: 4 th, 5 th, 6 th, 7 th, 8 th, 9 th. The plants having seeds with two cotyledons are known as dicots, whereas monocots are the plants whose seeds have a single cotyledon. Anatomy of Dicot Leaf: Mangifera indica-Leaf: Following tissues are visible in the transverse section of the material: Epidermis: 1. 744 monocot seed stock photos, vectors, and illustrations are available royalty-free. Monocot & Dicot Seeds. Dec 6, 2016 - Primary Anatomical Structure of a Typical Dicot Stem through Transverse Section with PPT. Anatomy of Dicot and Monocot Roots . 1. Monocot Stem with Secondary Thickenings 3. All plants other than grasses are dicots. 1. See monocot seed stock video clips. The Italian physician and biologist Marcello Malpighi (1628 1694) was the first to use the term cotyledon (the Latin word meaning seed leaf) and John Ray (1627 1705), an English naturalist, was the first to notice that some plants have one cotyledon and others have two. IB Biology Notes 9 1 Plant structure and growth. They have seeds with one embryonic leaf or cotyledon; hence they are called monocotyledonous plants. In different parts of the plants, the various tissues are distributed in characteristic patterns. Evolutionary history of Biological diversity. presentations for free. Difference Between Dicot And Monocot Stem MD. What to Upload to SlideShare SlideShare. You can change your ad preferences anytime. At each station you must: 1. Next . Dicot or monocot? - Several important evolutionary adaptations (or conditions) occurred that helped to make the invasion of land by plants permanent. The roots allow plants to absorb water and nutrients from the soil. Do you have PowerPoint slides to share? In contrast, dicots, or dicotyledons, have two seed leaves. Monocots, such as corn (right), have one cotyledon, called the scutellum; it channels nutrition to the growing embryo. Monocot Vs. Dicot What Is The Difference? Seeds Monocot- one cotyledon, never emerges above soil Dicot- two cotyledons, emerge above soil as two seed leaves What is included: Lesson plan Monocot and dicot internet resources Monocot and dicot note taking sheet Subjects: Biology, Writing. All the flowering plants or angiosperms are divided into groups. Normal Dicotyledonous Stems 4. Monocots, such as corn (right), have one cotyledon, called the scutellum, which channels nutrition to the growing embryo. Whether your application is business, how-to, education, medicine, school, church, sales, marketing, online training or just for fun, PowerShow.com is a great resource. Which of the following is NOT one of ... Plant Diversity II: The Evolution of Seed Plants. Transverse and longitudinal section. Magnoliids Piperales Canellales 3. You can tell if a flowering plant is a monocot or dicot by the number of flower petals and parts. The part of embryonal axis above the level of cotyledons is called epicotyl. U can like my Facebook page ie. September 2020. your own Pins on Pinterest - Title: Monocot versus Dicots Author: nbdoe Last modified by: Customer Created Date: 11/22/2009 1:44:16 PM Document presentation format: On-screen Show, | PowerPoint PPT presentation | free to view. View EMBRYONIC PPT.pptx from BEED 3 at Compostela Valley State College. 2. Article Shared by . Pollen Structure. Seeds of different plants may vary in many ways, but the basic anatomy remains the same. Beta Vulgaris—Beet Root (Chenopodiaceae—Dicot. Leaves are another important structure of the plant because they are in charge of feeding the plant and carrying out the process of photosynthesis. If so, share your PPT presentation slides online with PowerShow.com. Embryos of a monocotyledonous seed possess only one large cotyledon called scutellum. About 1 results (1.08 milliseconds) Sponsored Links. Customer Code: Creating a Company Customers Love, Be A Great Product Leader (Amplify, Oct 2019), Trillion Dollar Coach Book (Bill Campbell), No public clipboards found for this slide. The embryo in dicots contains two cotyledons or seed leaves. Monocots differ from dicots in five distinct structural features: seed, leaf, stem, root, and flower. Dicot Leaf Cross Section (Dorsiventral Leaf) (Anatomical Structure of a Dicot Leaf- Ixora, Mangifera, Hibiscus) Ø Leaves are structurally well adapted to perform the photosynthesis, transpiration and gaseous exchange. Structure of Dicot Embryo: A typical dicotyledonous embryo (Fig. Dicot plants have broad leaves with a net -type of veins. Other dicot seeds examples include apples, plums and peaches. Displaying Powerpoint Presentation on monocot and eudicotdicot roots all saints available to view or download. - Chapter 39 Plant Responses to Internal and External Signals * * * Figure 39.17 Inquiry: How does the order of red and far-red illumination affect seed germination? See our User Agreement and Privacy Policy. The plants having seeds with two cotyledons are known as dicots, whereas monocots are the plants whose seeds have a single cotyledon. - Bryophyta- Non-vascular plants Dicranoweisia cirrata Tracheophyta- Vascular plants Pterophyta Coniferophyta Ginkgophyta Anthophyta Eudicots Monocots 1 2 3 4 5 Monocot ... - Roots, Stems, Leaves, Tissues BSC 2011L Review of difference between monocots and dicots Organization of Flowering Plants 3 vegetative organs that don t have to do ... 4. Dicot leaves do not have bulliform cells whereas monocot leaves have bulliform cells; Monocot plants have single cotyledons whereas dicot plants have two cotyledons. scientist to classify flowering plants into the monocot and dicot structure. Hold the dissected plant material between your index finger and thumb, while keeping the edge of the razor perpendicular to the longitudinal axis of the plant. After purchase, you will receive a code via e-mail to access your digital content on CarolinaScienceOnline.com, Carolina's easy-to-use learning management tool. Anatomy of Dicot Leaf: Mangifera indica-Leaf: Following tissues are visible in the transverse section of the material: Epidermis: 1. For monocotyledons, also referred to as monocots, seeds contain only one cotyledon and when a monocot seed germinates, it produces a single. The seed germination in the dicot embryo is either hypogeal or epigeal. Types: Lesson Plans (Individual), Activities. See monocot seed stock video clips. Try these curated collections. They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. Or use it to upload your own PowerPoint slides so you can share them with your teachers, class, students, bosses, employees, customers, potential investors or the world. Document presentation format: On-screen Show (4:3) Other titles: Arial Georgia Wingdings 2 Wingdings Calibri Civic 1_Civic 2_Civic 3_Civic 4_Civic 5_Civic 6_Civic 7_Civic 8_Civic 9_Civic 10_Civic 11_Civic Botany Goal/Objective The Structure of a Seed Monocot and Dicot Seed Monocots vs. Dicot Review The anatomy or internal structure of a monocot stem can be studied by a Transverse Section (T.S.) Over 250,000 species of herbs, shrubs and woody plants are found in angiosperms. Dicot leaves have large intercellular spaces whereas monocot leaves have small intercellular spaces in them. Dicots are also known as Dicotyledons. Hilum• Scar from the seed … Monocot plants have a single seed leaf, while dicot have the so-called cotyledons, or two-seed leaves. Slice it into thin sections. Monocotyledons and Dicotyledons . Among them, the family Orchidaceae (orchids) contains more than 20,000 species. If you continue browsing the site, you agree to the use of cookies on this website. The young beet root contains a diarch protoxylem plate. Part 1 Instructions: You will visit each station (4 total) and summarize what you find at each station. See our Privacy Policy and User Agreement for details. It contains an embryonic plant, reserve food and protective coat. Why land plants are thought to have evolved from green algae. - Flowering plants make sexual spores in male stamens and female carpels of floral ... young woody eudicots: Ring of bundles divides ground tissue into cortex and pith ... - Angiosperms Phylum Anthophyta Largest group of plants Angiosperms are flowering plants. With monocot seeds, the embryo develops into a full-grown plant, and the endosperm is there to act as a source of food. The main difference between monocot and dicot is that monocot contains a single cotyledon in its embryo whereas dicot contains two cotyledons in its embryo. Embryo: The embryo in monocots contains only one cotyledon or seed leaves. Dicots are also known as Dicotyledons. He noticed clear distinctions between flowering plants. Displaying Powerpoint Presentation on monocot and eudicotdicot roots all saints available to view or download. The function PPT . A new generation starts with the formation of seed. Internal Structure of Dicot and Monocot Seeds | Edinburgh Garden School. from root over hypocotyl to primary stem ... Seedling of Monocots. Monocot and Eudicot/Dicot Roots Roots (below ground) The first structure to appear when a seed germinates and is called the radicle in the embryo. Customer Code: Creating a Company Customers Love HubSpot. Sketch of dissected beans The tougher outer covering of the bean is called the Testa. Structure of Dicot Stem | Botany. Corn, wheat and rice, are examples of monocot seeds or monocotyledons. SEED STRUCTURE• External – Seed coat (testa) – Hilum• Embryo – Cotyledon – Epicotyl / Hypocotyl – Pumule – Radical 5. Internal structure of monocotyledonous stem reveals epidermis, hypodermis, ground tissue and vascular bundles. Procedure Taking Sections. In a dicot plant, the pollen grain has three furrows or pores. Young Sunflower Stems (Figs. The types are: 1. Monocot vs Dicot Seeds . The part below the level of cotyledons is called hypocotyl which terminates in the root tip called radicle (future root). How to tell the difference. This group contains about 60,000 species. Internal structure of monocotyledonous stem reveals epidermis, hypodermis, ground tissue and vascular bundles. In dicots, the embryo will have an embryo axis and two cotyledons. The structures of dicot and monocot seeds are shown. Difference between monocot vs dicot. 1. All the flowering plants or angiosperms are divided into groups. They also contain foods to nourish this living part in them. Epub Structure Of A Dicot Leaf PDF Daily Books. Ø A leaf composed of: (1). Monocot & Dicot Seeds. 2) Using the magnifying lens, look for structures closely on the outside of the seed. For the dicot and monocot embryo seed, prepared slides were observed under three magnifications of the microscope to observe and identify its parts. For monocotyledons, also referred to as monocots, seeds contain only one cotyledon and when a monocot seed germinates, it produces a single. A seed is a ripened fertilized ovule. Both monocot and dicot embryos have a plumule that forms the leaves, a hypocotyl that forms the stem, and a radicle that forms the root. Similarities between Monocot Leaf and Dicot Leaf Vipin Sharma Biology Blogs for more information regarding every national level competitive exam in which biology is a part . The structure of monocot and dicot stem is quite different from each other. What is a Monocot Besides these, the Poaceae (true grasses) is the most important family. A herbicide or pesticide designed for a monocot might not help kill pests around a dicot. Cross Section of a Leaf Diagram TutorVista. taken through the internode of a monocot plant such as grass, bamboo, maize, Asparagus etc. So far there are about 2,00,00 species of cotyledons have been discovered. Dicot Cross Section Definition Amp Plant Examples Video. To prepare a temporary stained mount of a transverse section of dicot and monocot stem and root to study various plant tissues. Grains, banana, palm, onions, and grass serve as the examples for monocots. Monocot and dicot plants have different pollen structures. The sugar beet forms its fleshy hypocotyl root organ by anomalous growth. Dicot Root Cross Section Structure PPT Easybiologyclass. Monocot leaves are characterized by their parallel veins, while dicots form "branching veins." Monocot Seed (corn) 11 Eudicot/Dicot Seed (bean) 12 Germination of Monocots and Eudicots plumule plumule Embryo structures 13 Summary of Structures Embryo Mature Plant part 1. radicle 2. epicotyl hypocotyl 3. plumule becomes root becomes stem above cotyledons becomes leaves and tip of stem 14 Monocot and Dicot (Eudicot) Seed Minilab Dicot Stem Sciencetopia. All seeds contain an embryo, which is a living plant. So far there are about 2,00,00 species of cotyledons have been discovered. All seeds contain an embryo, which is a living plant. - Title: Plant Diversity II The Evolution of Seed Plants Author: WCS Last modified by: Sally Created Date: 10/15/2010 4:16:18 PM Document presentation format. T.S Of Dicot Stem. Monocot and Dicot Leaf: Type # 2. Leaves. The scutellum is generally shield-shaped and is located laterally towards a side of the embryo axis. Structure and Development of Embryos (Dicot & Monocot) Embryogenesis • The zygote gives rise to an embryo by a Eudicots- the largest group Laurales Magnoliales 2. Primary Structure Of Monocot Stem Maize Pdf Morphological And Anatomical Stus On Some Monocot Xerophytes Of District Karak Stan Sohail Khan Academia Edu What Is The Difference In Internal Anatomy Of A Dicot And Monocot Leaf Blades Enotes Com Ts Of Dicot Leaf Under A Microscope Ppt Easy Biology Class Leaf Growth In Dicotonocots So Diffe Yet Alike Sciencedirect Doc Bio 10 Plant Form And … Or use it to find and download high-quality how-to PowerPoint ppt presentations with illustrated or animated slides that will teach you how to do something new, also for free. An epidermal layer is present on the upper as well as lower surfaces. Results and Discussions Part A. CrystalGraphics 3D Character Slides for PowerPoint, - CrystalGraphics 3D Character Slides for PowerPoint. Show more details Add to cart. Angiosperms Monocots / Monocotyledonous Eudicots / Dicots ... - Chapter 35 Plant Structure, Growth, and Development * Figure 35.18 Leaf anatomy. Monocots and dicots have different seed structures and also germinate in slightly different ways. Dicotyledonous and monocotyledonous seeds structure and its. 2.30 H) consists of an embryonal axis and two cotyledons. Clipping is a handy way to collect important slides you want to go back to later. Young Sunflower Stems (Figs. Read this article to learn about the structure of dicot and monocot seeds! Differences BetweenMonocots and DicotsPresented byCrystal Salinas. Write a description of the featured characteristic of the monocot’s and dicot’s. Try these curated collections. It's FREE! Comparison of Monocots and Dicots. In dicots, the embryo will have an embryo axis and two cotyledons. Cotyledons are a very important segment of the embryo that lies within the plant’s seed. Seed structure Ting Emerald. Structure of Dicot Seeds. Wish List. - 4. Freeman and Sinauer Associates, used by permission. - Seed Plants BSC 2011L Seed Vascular Plants Among plants, these include the gymnosperms and angiosperms Reproductive differences in seedless vs. seed plants Sporangia ... - Plants I Chapters 29 What you need to know! It terminates with the stem tip, called plumule (future shoot). That's all free as well! 2. Tesla: It is the outer coat of the seed that protects the embryonic plant. And, best of all, most of its cool features are free and easy to use. A plant species producing seed with two cotyledons is a . Anatomy of Monocot and Dicot Roots. It is usually long and narrow, like a mature leaf. A typical seed consists of the following parts: Source: Google. Anatomy Of Monocot And Dicot Stems Botany Biology. Winner of the Standing Ovation Award for “Best PowerPoint Templates” from Presentations Magazine. of 8 . The provided digital images, housed in an editable PowerPoint® file, complement the slides. of 8. seed anatomy dicots parts of a seed seed structure parts of seed dicot part of the seed dicot seed seed parts structure of seed. Testa protects the embryo from any damage as it grows. Choosing the right product for the right kind of plant is important. The following points highlight the top four types of monocot and dicot stems. Seeds, miraculous seeds. Moreover, the seed is attached to the fruit through a structure called hilum. MONOCOT Amp DICOT STEMS COMPARED YouTube. Dicot Leaf under a Microscope PPT easybiologyclass. Sort by: The Monocots: Part 2 ... Monocot vs Dicot Lab - Monocot vs Dicot Lab Problem: How can monocots and dicots be identified during seed germination? Embryo (kernel) is the future plant in miniature condition. Monocots and dicots have three key parts: roots, stems, and leaves. Plant Anatomy Lecture Notes Monocots and dicots. How the seed is structured depends on what kind of plant will grow out of it, so we can differentiate two different types: seeds from a monocot, and seeds from a dicot plant. The seed cover basically helps to protect the embryo until it finds a proper location to germinate. The structure of monocot and dicot stem is quite different from each other. Or use it to create really cool photo slideshows - with 2D and 3D transitions, animation, and your choice of music - that you can share with your Facebook friends or Google+ circles. Monocots 1. Stem & Vascular Bundles. ): The anatomy of beet root has been described in detail by E.F. Artschwager (1924, 1926). Some of the disadvantages and advantages of life on land. Soybeans, trees, lettuce, sunflowers, and petunias are examples of dicots. - Evolutionary history of Biological diversity 2.7 billion yrs ago = oxygen 2.1 billion years ago = eukaryotes 1.7 billion years ago = multicellular euk. Monocot PowerPoint PPT Presentations. Primary structure of monocot stem – Maize stem The outline of the maize stem in transverse section is more or less circular. Monocots have single cotyledon in their seeds. The monocot has single cotyledon and embryonic leaf while the dicot has two cotyledons and two embryonic leaves.