Plant Reproduction

Question 1

Fertilisation

Answer 1

When male & female gametes fuse

Question 2

Germination

Answer 2

When the seed grows into a plant

Question 3

Conditions necessary for germination

Answer 3

1. Oxygen - for respiration
2. Water - moisture is required to activate enzymes needed to digest the food store
3. Warmth - to create optimum temp for enzyme activity (18-20 degrees c)
4. Light - activate growth hormones auxin

Question 4

Wind (seed dispersal)

Answer 4

(Abiotic)

-> seeds = small & light so can be carried by wind long distances

Question 5

Explosion (seed dispersal)

Answer 5

(Abiotic)
Bursting open of pods containing many seeds
Seed pod dries out -> build up of pressure -> explosion

Question 6

Animals active (seed dispersal)

Answer 6

(Biotic)

• > smelly/ testy fruits that attract animals to eat them
• > tough outer coating to pass through animals digestive system

Question 7

Water (seed dispersal)

Answer 7

(Abiotic)

-> seeds = buoyant & water proof so they can be taken long distances by water

Question 8

Animals passive (seed dispersal)

Answer 8

(Biotic)
Seeds adapted to stick to animals body e.g. Hooks or spikes
Then carried away until animal scratches / rubs them off