Monocots . Vs . Dicots - PowerPoint PPT Presentation

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Monocots . Vs . Dicots

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Plants are the fundamental building blocks of life on earth. Plants are life forms belonging to the kingdom Plantae. The scientific study has revealed at least ... – PowerPoint PPT presentation

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Title: Monocots . Vs . Dicots


1
Monocots .Vs.Dicots
2
Classification of Plants
  • Plants are the fundamental building blocks of
    life on earth. Plants are life forms belonging to
    the kingdom Plantae.
  • The scientific study has revealed at least
    500,000 species of plants. The types of plants
    vary in size from microscopic algae, to huge
    sequoia trees more than 8m (26 ft) tall.
  • Plant Kingdom is mainly classified into two .
    This type of plant classification is done
    according to how they reproduce.
  • 1) Spore bearing plants ( Algae, mosses, ferns
    and their relatives)2) Seed bearing plants.
    (Conifers and flowering plants)

3
  • The plant kingdom can also be classified on the
    basis of the presence or absence of conductive
    (vascular) tissue.
  • Ferns (pteridophytes), gymnosperms and
    angiosperms have vascular tissue which transports
    the nutrients and water through the plant.
  • Mosses, liverworts, hornworts are non-vascular
    i.e. they do not have conductive tissue to
    transport sugar, water and nutrients.

4
Flowers
Monocots Dicots
3's or multiples of 6, rarely more than six 4, or 5, or multiples up to 10
5
Embryo in seed - Cotyledons
Monocots Dicots
Have only one seed leaf inside the seed coat. It is often only a thin leaf, because the endosperm to feed the new plant is not inside the seed leaf. Two seed leaves inside the seed coat. They are usually rounded and fat, because they contain the endosperm to feed the embryo plant.
Inside is a tiny plant called an embryo. The
outer parts of the seeds are called cotyledons.
They supply the food for the young plant when
it's growing.
6
Leaves
Monocots Dicots
The leaves are often long and narrow, with their veins in straight lines up and down the leaf. Sometimes, the veins run from the center of the leaf to the edge, parallel to one another. Leaves come in many different shapes and sizes. The veins go from the central midrib to the edge of the leaf, crossing and joining to form a netted pattern all over the leaf.
Malva              Rosa           Campanula
Washingtonia        Clivia          Canna  
7
Vascular Tissue - Stem
Monocots Dicots
Scattered vascular bundles throughout the stem. Vascular bundles only on the perimeter of the stem.
8
Root Pattern
Monocots Dicots
The roots are usually short and stringy. The root is often a single long tap root with smaller roots growing from it.
9
Fun Facts
  • About 65,000 monocot species are known worldwide
  • About 170,000 dicot species are known worldwide
  • Nearly all our deciduous trees and common
    flowering bushes and vines are dicots, but nearly
    all grasses and grasslike things are monocots.

10
Monocot or Dicot?
11
Monocot or Dicot?
  • The leaves appear to have parallel veins, so
    there's a vote for "monocot."
  • However, this flower seems to have only two
    petals, and that doesn't fit either monocot or
    dicot.
  • The main proof is that actually there is a third
    petal, a much reduced, translucent one at the
    flower's bottom, so there are also three petals.
  • Therefore Monocot.
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