3.2 - Plants

Question 1

Characteristics of plants

Answer 1

• Multicellular eukaryotes
• Photosynthetic
• Cell walls composed of cellulose
• Terrestrial plants are sessile (stationary)

Question 2

Bryophytes (mosses)

Answer 2

• No vascular system (moves by diffusion, from cell to cell)
• No true leaves/roots/seeds
• Not very tall and can only live in wet conditions

Question 3

Lycophytes (club mosses) & pterophytes (ferns & relatives)

Answer 3

• Vascular tissue (xylem & phloem) which contains lignin

Question 4

Gymnosperms

Answer 4

Produces seeds in cones. Pollen, grains fertilize ovules, producing seeds.

Question 5

Angiosperms

Answer 5

• More than 90% of plants are angiosperms (flowering plants)
• Pollen and ovules found in flowers, seeds are formed in fruits
• 2 major groups - monocots & eudicots

Question 6

Structures in leaves that are adaptations to terrestrial environments

Answer 6

Cuticle and stomata/guard cells (to prevent water loss)