PLANTS!!!

WHAT IS A PLANT

WHAT IS A PLANT

• Plants are organisms that produce their own food.

PLANT ADAPTIONS FOR LAND

• Must have ways to take in
• Water from their surroundings

NONVASCULAR PLANTS

MOSSES

• There are more than 10,000 species
• Moss grows in .....
• Sidewalk cracks, and on tree trunks

LIVERWARTS

• There are more than 8,000 species of liverwart
• Often found growing as a thick crust in moist rocks.

HORN WORTS

• There are fewer than 100 species of hornworts .
• Unlike mosses or Liverwarts , hornworts live in moist soil.
• Hornworts are named for the slender...
• Curved like structures that glow out of the gametophytes

SEEDLESS VASCULAR PLANTS

• Like mosses, seedless vascular plants need to grow in moist surroundings .
• Ferns club mosses, and horsetails have true vascular tissue and they don't produce seeds

FERNS

• There are more than 12000 species of ferns today
• The stems on most ferns are underground

HORSE TAILS

• There are few species of horsetails today
• The stems of horsetails are jointed
• During colonial times,
• Americans used the plants to scrub their ,
• Pots and pans.

CLUB MOSSES

• Like ferns, club mosses have true stems,roots,and leaves.
• They also have a familiar life cycle
• There are only a few hundred species alive today

SEED PLANTS

• Seed plants share two important characteristics
• They have vascular tissue .
• They use pollen and seeds to reproduce.

PHLOEM

• Vascular tissue through wich food moves
• When food is Made in the leaves, it enters the phloem

XYLEM

• Water and minerals travel in the vascular tissue called xylem
• The roots absorbs water and minerals for the soil.

POLLEN AND SEEDS

• Pollen tiny structures that can contain the cells that will later be sperm cells
• A seed is a structure that contains a young plant inside a protective covering
• Seeds protect the young plant from dying

SEED STRUCTURE

• A seed has three parts
• Embryo
• Stored food
• And a seed coat

SEED DISPERSAL

• After seeds have formed they are usually scattered
• Water can disperse seeds that fall into oceans and rivers

GERMINATION

• Once you can see a plants leaves it's called a seedling
• Germination begins when the seed obsorbs water from the enviroment

ROOTS

• The root cap protects the root from injury from rocks
• Root hairs grow out of the roots surface

STEMS

• The stem carries substances between the plants roots and leaves
• The stem also provides support for the plant and holds up the leaves so they are exposed to the sun

LEAVES

• Leaves capture the sun's energy and carry out the food making process of photosynthesis

GYMNOSPERMS

• Seed plant that produces naked seeds
• Gymnosperms are he oldest type of seed plant.

EXAMPLES

• Gnetophyte
• Ginkgo
• Conifers
• Ginkgoes

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