Chapter #6 Plants

Section 6.1 Plant Classification Chloroplast- where photosynthesis takes place. Chlorophyll- is a chemical that gives plants their green color and traps light energy. Photosynthesis- is the process in which plants use water, carbon dioxide, and energy from the sun to make food 6 CO 2 + 6H 2 O C 6 H 12 O 6 + 6O 2 Photosynthesis separates plants from animals Cell wall- give plant structure (No Bones)

2 Groups of plants 1.Vascular- have tube like cells in their roots, stems and leaves to carry food and water. Most chloroplasts are in the leaves. 2.Nonvascular- don’t have tube like cells in their stems and leaves. Grow close to the ground in moist areas. No Roots! Hair like cells take up water by osmosis.

Osmosis- is the movement of water across a cell membrane.

Moss- is a small, nonvascular plant that has both stems and leaves but NO roots. Liverworts- no roots, stems or leaves. Is often flat, slippery layer of green cells that lies close to the ground. DIFFERENCE between mosses and liverworts is in the arrangement of the leaves…Liverworts grow in 2 or 3 flattened rows…Mosses grow all around the stem 6.2 Nonvascular Plants

Sexual Reproduction is the forming of a new organism by the union of sperm and egg. Fertilization joining of egg and sperm Non Vascular plants reproduce by spores.

6.3 Vascular Plants Xylem cells that carry water and dissolved mineral UP the roots to the leaves. Phloem cells that carry food made in the leaves DOWN to all parts of the plant. Fern vascular plant the reproduces with spores.

Conifers are plants that produce seeds in cones. Pine cones (left) and juniper “berries” (cones, right) Lumber supply ¾ is from Conifers.

Seed is the part of a plant that contains a new young plant and stored food. Embryo is an organism in its earliest stages of growth. Pollen are tiny grains of seed plants in which sperm develop.

Flowering plant is a vascular plant that produces seeds inside a flower. Flower is the reproductive part of the plant. Male parts produce pollen & female produce eggs. There are more flowering plants than non-flowering plants. Apple Tree

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