4a 2

Question 1

Stenophagous preadtors

Answer 1

Selective of prey - herbivores - koala bear only eats eucalyptus leaves

Question 2

Herbivory

Answer 2

Herbivory of roots and leaves reduces plant growth and seed production

Question 3

Strategies to avoid herbivory

Answer 3

1. Fast growth to reproduce before being eaten (r strategy)
2. Invest in more root and soot biomas (perennial seeds)
3. Chemical and physical protection to reduce palatability

Question 4

Landscape of fear

Answer 4

Elks hide in forest to avoid being eaten when grazing in the meadow. This reduces herbivory amongst elk allowing vegetation to r cover

Question 5

Dispersal

Answer 5

Movement of organisms away from origin

Question 6

Passive dispersal

Answer 6

Wind or water

Question 7

Seed dispersal type

Answer 7

1. Autochory (ejection from parent plant)
2. Semachory (swaying motion by wind)
3. Anemochory (wind)
4. Hydrochory (water)
5. Zoochory (body or digestion)
6. Hemerochory (human activity)

Question 8

Phalanx strategy

Answer 8

Tightly packed front of advancing ramets

Question 9

Guerilla strategy

Answer 9

Infiltrate their surrounding by widely space ramets, defence against grazing pressure, facilitation of other species

Question 10

Succession

Answer 10

Changes in physical and biological conditions of an ecosystem (usually following disturbance)

Question 11

Primary succession

Answer 11

Previously lifeless environment is colonised

Question 12

Secondary succession

Answer 12

Ecosystem recovers from a disturbance