plant seeds

Question 1

Testa

Answer 1

A tough, protective outer coat

Question 2

Cotyledons

Answer 2

Seed leaves that function as a nutrient storage structure

Question 3

Micropyle

Answer 3

A scar at the opening where the pollen tube entered the ovule

Question 4

Embryo root and shoot

Answer 4

Become the new plant when germination occurs

Question 5

Germination:

Answer 5

Germination: development of the seed into a functional plant

Question 6

Conditions needed for germination

Answer 6

• Water to rehydrate dried seed tissues
• Oxygen for aerobic respiration to produce ATP
• Appropriate temperature for enzyme action
• Large amount of seeds due to plantlets fragility/dangers to germination

Question 7

Initial germination process

Answer 7

1. Absorption of water
2. Release of plant growth hormone
3. Amylase produced, which hydrolyzes starch into maltose
4. Maltose hydrolyzed to glucose used for cellular respiration
5. Early glucose may also convert into cellulose for cell wall production