Preview

Monocots & Dicots

Good Essays
Open Document
Open Document
1553 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Monocots & Dicots
Monocots

Monocot plants are one of the two major botanical classes of flowering plants, or angiosperms. The other class includes the dicot flowering plants. These fundamental classes were given formal taxonomic standing by botanists in the mid-17th century, replacing previous plant classification systems that were based on growth form. Roughly one-fourth of all flowering plant species are monocots, including a number of species important to humans as food plants or ornamentals

Distinct Flowers
Monocots have distinctive morphological features that set them apart from the dicots. The flowers of monocot plants typically have petals, stamens and other floral parts in threes or multiples of three such as six or nine. Dicots have flower parts in multiples of four or five. The pollen grains from monocot flowers have a single furrow through the outer layers, while dicot pollen grains have three furrows. However, some monocots have features of dicots and some dicots have features of monocots, meaning there's a "fuzzy" border between these classes.

Leaves and Stems
The leaves of monocot plants tend to be elongated, with leaf veins running parallel along the leaf length. Dicot leaves tend to be more rounded with a network of auxiliary veins between the main veins. The vascular tissue in plant stems occurs in long strands called vascular bundles. In monocot plants, a cross section of the stem shows vascular bundles randomly scattered in the stem but with more toward the perimeter. In dicot plants, the vascular bundles are arranged in a column and show as a ring in a cross section of the stem.

Sponsored Links

Plant Canopy Analyzer
Non-destructive Measurement of Leaf Area for Plant Canopy Research. www.licor.com/areameters Cotyledon Count
Cotyledons are the "seed leaves" within a seed that support and feed the embryo with the nutrients packed within the seed until the embryo produces its first leaves and begins photosynthesis. Seeds of monocot plants have a

You May Also Find These Documents Helpful

  • Good Essays

    • Vascular tissue-plant tissue consisting of cells joined into tubes that transport water and nutrients throughout the plant body…

    • 1719 Words
    • 7 Pages
    Good Essays
  • Good Essays

    The zygote divides multiple times by mitosis in order to produce an embryo. The embryo then differentiates to become a plumule, radicle, and/ or one or two cotyledons, which is attached to the wall of the embryo sac by a suspensor. Endosperm tissue is produced by the primary endosperm nucleus dividing multiple times by mitosis. This endosperm stores food for later use by the seed in some cases. It may gradually disappear as the cotyledons develop in others. The embryo sac expands to support growth, and the nucellus is crushed out of existence, which in return give nutrients to the embryo and endosperm. The integuments that surround the embryo sac become a tough, protective seed coat called testa. The micropyle is not removed to continue the intake of oxygen and water at germination. The water content of the seed decreases to prepare the seed for dormancy. The wall of the ovary becomes the pericarp, which is the fruit wall with the entire ovary now being fruit. The fruit protects the seeds and aid in…

    • 1695 Words
    • 7 Pages
    Good Essays
  • Satisfactory Essays

    Bio 20 Final Review

    • 317 Words
    • 2 Pages

    | Found in dark, moist and warm locations | Plantae | Rose or Lily | Photosynthesis Sessile | Animalia | Humans or Whales | Mobile heterotroph Symmetry, gut, body cavity | SA Kingdoms SA Single Seed Leaf Double Seed Leaf Monocot vs Dicot SA Prokaryote vs Eukaryote Pro: Lacks a true nucleus, membrane and cell organelles. Simple structure…

    • 317 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Lab 5

    • 2594 Words
    • 10 Pages

    Gymnosperms are plants with exposed seeds borne on scale-like structures called cones (strobili). Like ferns, gymnosperms have a well-developed alternation of generations, but unlike most ferns, gymnosperms are heterosporous - they produce two types of spores (Fig. 1). Microspores occur in male cones and form male gametophytes. Megaspores occur in female cones and form female gametophytes. Gametophytes of gymnosperms are microscopic and completely dependent on the large, free living sporophyte. One advantage of this is that the delicate female gametophytes do not have to cope with environmental stressors - female gametophytes and the embryos they produce are sheltered from drought and harmful UV radiation by their enclosure within the moist reproductive tissues of the parental sporophyte generation. Nutrient exchange also occurs between gametophytes and their parents. In contrast, the free-living gametophytes of seedless vascular plants must fend for themselves.…

    • 2594 Words
    • 10 Pages
    Good Essays
  • Satisfactory Essays

    Ap Biology Chapter 19

    • 1024 Words
    • 5 Pages

    a. Plantae is used in the textbook and refers to plants that form embryos. Streptophyta would include charophyceans ,green algae, and related groups. Viridiplantae would include noncharophyceans.…

    • 1024 Words
    • 5 Pages
    Satisfactory Essays
  • Good Essays

    Ap Bio Plants

    • 904 Words
    • 4 Pages

    The stem has a system of nodes where leaves are attached. They have a waxy coating (epidermis) that prevents water loss. The stem and the roots are the 2 main axes in a vascular plant. Fluids are transported between the roots and the shoots through the stem by the phloem and xylem.…

    • 904 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    Dicot Plants

    • 439 Words
    • 2 Pages

    The seeds of summer squash (Cacurbita moschata), beet (Beta vulgaris), and pepper (Capsicum annuum) are all dicot plants, which mean that they have two seed leaves inside the seed coat. When they are placed in an environment and are watered with solutions of different acidic and alkaline levels, the root growth during germination is affected. The purpose of this experiment was to observe what type of substance, acidic or basic, increases the growth of roots during the germination process of Cacurbita moschata, Beta vulgaris, and Capsicum annuum. Previous research has shown that water with a rather neutral pH level of 7 is best for plant germination and growth and that pH levels more acidic or basic did not show much plant germination. The hypothesis was that if the acidity or alkalinity is varied in water to change the pH level, then the then the Cacurbita moschata, Beta vulgaris, and Capsicum annuum root length and plant growth will be less than the root length and plant growth of the seeds watered with the neutral pH of 7 because the intake of either OH- ions, if basic, or H+ ions, if acidic, will be increased, which diminishes the nutrients needed for a seedling to germinate. The hypothesis was tested by placing Cacurbita moschata, Beta vulgaris, and Capsicum annuum seedlings into petri dishes that were watered with lemon juice (pH 2), vinegar (pH 3), milk (pH 6), water (our control with a pH of 7), baking soda (pH 8), and milk of magnesia (pH 9.5). While the seedlings germinated in the petri dishes, root length was measured along with the day the seedling germinated. After the root lengths were gathered, they were analyzed and compared to each other to show what pH level expressed the best results. The significance of this study was to better understand how plant and vegetable seedlings tolerate various levels of water pH. Root length analysis showed that water with a rather neutral pH of…

    • 439 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    parent plant produce stolons. The new tubers are formed at the ends of the stolons (stems that…

    • 1338 Words
    • 6 Pages
    Good Essays
  • Good Essays

    geography 1 chap 11

    • 2437 Words
    • 10 Pages

    A: The gymnosperm, carry their seeds in cones, and when the cones open,the seeds fall out. Gymnosperms are cone-bearing trees such as pines.…

    • 2437 Words
    • 10 Pages
    Good Essays
  • Good Essays

    Fibrous Root Systems

    • 751 Words
    • 4 Pages

    Dicot roots have a central stele surrounded by a thick cortex and epidermis. Monocot roots have a vascular cylinder of xylem and phloem that surrounds a central pith.…

    • 751 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Flower and Angiosperms

    • 407 Words
    • 2 Pages

    Angiosperms have a wide distribution in the biosphere and the largest number of species in the plant kingdom. An angiosperm is seed plant that produces flowers and fruits. Angiosperms are divided into monocots and eudicots. They are classified in Anthophyta. There are four structures for reproduction found in angiosperms. These structures include fruits, petals, stamen, and carpel. Fruits, which are the matured ovaries of plants helps to disperse the seeds of angiosperms. By being tasteful, more animals are attracted to the fruit therefore allowing the fruit to be dispersed. The petals of the flower attract pollinators, due to their appearance. Flowers have evolved to attract animals to transfer pollen between individuals in dispersed populations. Stamens are the male reproductive structure, they produce microspores in the anthers of a flower to produce pollen grains. Pollen is able to be transferred by wind due to its waterproof coating. The carpel of an angiosperm is the female reproductive structure, which produces female gametophytes with eggs. The carpel helps to create and ovule. The ovule protects the eggs and zygote, it is an a adaptation which increases reproductive fitness.…

    • 407 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Stomata Lab Report

    • 611 Words
    • 3 Pages

    A long 350 million years ago, life on land was unsuitable for plants to live on with the little to no supply of oxygen and the harmful ultraviolet rays of the scorching sun. This lead to life beginning in the ocean where scientists have traced back to an ancestral bryophyte (also known as freshwater green algae) that has, over time, developed a key process of making food by using the energy from sunlight to convert carbon dioxide and water into by glucose and oxygen. The plant life history also involves the "alternations of generations" that allows a plant to undergo meiotic/mitotic phases between the sporophyte(diploid) and gametophyte(haploid) generation. In leaves, gas exchange occurs through little pores called the stomata which are present in the sporophyte generation. These small openings are light sensitive, so they are most commonly located on the bottom of leaves to prevent dehydration. The stomata usually open in the morning, and close in the night in C3 and C4 plants. Although, many plants species are different when you compare their stomata orientation. One of the two major groups of flowering plants(angiosperms) are monocots, which include palms. These trees have adapted to harsh, dry environments. The deep roots of a palm tree allow it to reach far below the soil and obtain the necessary water and minerals stored at the bottom, and to help it grow. Its giant sized leaves allows for maximum sunlight exposure and its waxy surface cuticle of its leaves prevent the large loss of water from leaf due to transpiration.…

    • 611 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Science Lab 1

    • 1869 Words
    • 8 Pages

    regular shape (rectangle), and are extremely similar, the plant cell just has a few more…

    • 1869 Words
    • 8 Pages
    Good Essays
  • Good Essays

    • Reproducing on land: A pollen grain is a two-celled structure produced by seed plants that contains a cell that will divide to form sperm. Pollen can be carried by wind or animals to female reproductive structures. A seed is a storage device that also protects and nourishes a plant embryo.…

    • 1007 Words
    • 5 Pages
    Good Essays
  • Better Essays

    Raven, P., Evert, R., and Eichhorn, S. 1999. Biology of Plants. Freeman & Co.: New York. 6th ed.…

    • 964 Words
    • 4 Pages
    Better Essays

Related Topics