B2 - Interdependance Flashcards Preview

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Flashcards in B2 - Interdependance Deck (11):
1

What do animals compete for?

- food
- water
- shelter
- light
- minerals
- mates

2

Why do cheetah cubs have to move away from their mothers area?

This is so they are not competing with their mother for food.

3

A red squirrel and a grey squirrel have a closer competition than a red squirrel and a badger, explain why.

This is because the squirrels are the same species and are competing for more things than a squirrel and a badger.

4

What is an ecological niche?

An ecological niche is the role and position a species has in its environment; how it meets its needs for food and shelter, how it survives, and how it reproduces.

5

What is intraspecific competition?

Intraspecific competition is competition between two animals that are the same species.

6

What is interspecific competition?

Interspecific competition is competition between two animals of different species.

7

Describe a predator-prey relationship.

When the number of prey increases, the predator has more food so they increase. Then, more pray is eaten so numbers decrease and so do predator numbers.

8

What is a parasite?

An organism which lives in or on another organism (its host) and benefits by deriving nutrients at the other's expense.

9

What is mutualism?

Mutualism is where two animals benefit from the relationship.

10

What is a root nodule?

A swelling on a root of a leguminous plant, containing nitrogen-fixing bacteria.

11

What does nitrogen fixing bacteria do?

Nitrogen fixing bacteria converts nitrogen into nitrates.