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Transcript of Plants
Non-Vascular vs. Vascular
...have true roots, stems and leaves
Vascular plants are the largest division of plants. They reproduce with spores or seeds.
Vascular plants have the vascular tissue to help move water and food throughout the plant.
Xylem carry water from the roots to the leaves
Phloem carry food from the leaves to the roots, for storage.
Speaking of leaves...
Vascular plants use their leaves for photosynthesis to make food. They use their roots to obtain nutrients from the ground, store food and water and anchor the plant.
Do NOT have true roots, stems or leaves
Reproduce with spores only
Rhizoids anchor them to the ground
They obtain water and nutrients and move it from cell to cell
Rhizoids are root-like but they do not suck up water, so they aren't roots!
Dicot and Monocot are short for Monocotyledon and Dicotyledon.
Monocot vs. Dicot
... flowers that have seeds with one cotyledon. You can tell a monocot from a dicot in many ways.
Their leaves: Slender and skinny with parallel veins.
Their petals: Multiples of 3 (3, 6, 9, etc.).
And their Vascular bundles: Scattered around the stem in no particular order.
... flowers that have seeds with two cotyledons. You can tell a dicot from a monocot in many ways, too.
Their leaves: Broad with branching veins.
Their petals: Multiples of 4 or 5 (4, 8, 12, etc. 5, 10, 15, etc).
And their Vascular bundles: Arranged in a pattern in the stem.
Angiosperms vs. Gymnosperms
Angiosperms are the flowers you probably see everyday. Gymnosperms are the trees you probably also see everyday. Just to give you a few examples...
Monocot & Dicot
Can be non-vascular
Mrs. Ebert Sixth Grade Science teacher
Google Search through Prezi
Defensive plant structures are structures on a plant that defend it from predators. Such as, odors, spines or when you eat the plant you get sick. The ones we are leaning about are: thorns as on a Rose, poisons as on Poison Ivy and thigmotropism as on a Venus Fly Trap.
Defensive Plant Structures
Thigmotropism is the response to touch from a plant. As on a Venus Fly Trap, it eats the bug when it brushes on spikes inside it's mouth twice.
Such as these
The plant kingdom has many plants, divided into many divisions. Some divisions include vascular and non-vascular, angiosperms and gymnosperms and monocots and dicots.
Monocot & Dicot
You've probably picked up a rose and gotten stuck by a thorn. Thorns protect the plant from being eaten by predators.
Poisons, on plants such as Poison Ivy, protect the plant from being eaten by predators by having poisons on their fruits, leaves or other parts of the plant.
Poison Ivy has three leaves
Now we shall go into more detail of roots. stems, leaves and reproductive systems.
Structures For Survival
There are two types of roots...
...fibrous roots and taproots.
Root hairs increase surface area of the roots. The more surface area of the roots, the more water and nutrients it gets for food.
The flower produces seeds.
The stamen is the male part of a flower...
...it has the anther on a stalk (filament)
the anther produces pollen that contains sperm cells.
The pistil is the female part of the flower...
...and it contains the ovary.
The ovary contains the ovules that produce egg cells.
The pistil also has the stigma.
The stigma is the sticky top where pollen grains land.
The last part of the pistil is the style.
It is the stalk down, which a pollen tube grows after pollination.
Hope you enjoyed...
...my plant Prezi!
A taproot is a large root with smaller roots branching off.
Fibrous roots are the smaller, thinner roots. They consist of several main roots with smaller roots branching off to form a mass of roots.
Cotyledon: The food stored for the seed to grow with
Embryo: The tiny plant inside the seed
Seed Coat: The outer coating of a seed that protects the seed
The ovule contains the embryo. The ovary forms a fruit that protects the seed.
Conifers, Ginkgoes, Pines, Gnetophytes
The last part is the sepals. The sepals are the green protective covering that protects the petals before they bloom.