Unit 7 - Behaviour and Ecology

Question 1

Two steps to show physiology’s role in ringdove productive behavior

Answer 1

1. Male begins courting; bowing and cooing
2. Testosterone readies male for this behaviour
3. Sight of male doing this causes females pituitary gland to produce FSH
4. Causes her ovaries to produce eggs and release oestrogen to bloodstream
5. Male & female construct a nest and copulate
6. Progesterone in both sexes causes birds to incubate the nest
7. Prolactin causes crop to grow

Question 2

One example of innate behaviour

Answer 2

Wolf pups begging for food

chick pecking

Question 3

Define Biosphere

Answer 3

Thin area surrounding the earth composed of water, land, and air where organisms are found

Question 4

Four types of treeless biomes

Answer 4

Tundra
Grasslands
Scrublands
Deserts

Question 5

Define Ecology

Answer 5

Study of the interaction of organisms with each other and with the physical environment

Question 6

Define Niche

Answer 6

profession or total role in the community (no two species can occupy the same niche at the same time)

Question 7

Four types of heterotrophic consumers

Answer 7

herbivores
carnivores
omnivores
decomposers

Question 8

Define Commensalism

Answer 8

One organism is benefitted while the other organism is neither benefited or harmed; ex. barnacles on whales