Biology2 7D Ecosystems Flashcards

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1
Q

What is the term used to describe differences between organisms?

A

Variation

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2
Q

Give an example of ‘continuous variation’

A

Height, weight, hair length, Arm length

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3
Q

Give an example of ‘discontinous variation’.

A

Eye colour, shoe size

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4
Q

Give some adaptations of a polar bear to explain how it survives in the arctic.

A

Thick fur, white fur to catch prey, wide paws to walk on the ice.

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5
Q

What is a habitat?

A

Where an organism lives.

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6
Q

Which words describes and organism which is eaten by another?

A

Prey.

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7
Q

What type of organism is a cow?

A

herbivore

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8
Q

What is the name to describe an organism which makes its own energy?

A

Producer

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9
Q

Where is energy stored in an organism?

A

In its muscles and fat.

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10
Q

Name 2 physical factors which can effect the environment an organism lives in.

A

Light, temperature, soil type, wind speed, salinity.

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11
Q

Why was the pesticide DDT banned?

A

Because it is poisonous which gets more concentrated up the food cahin and was killing top predators such as peregrine falcons.

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12
Q

In a food chain, not all the energy is passed onto the next level. What happens to it?

A

It is lost as Movement, Respiration, growth, reproduction, excretion, nutrition.

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13
Q

Why are there always less predators in a food chain than prey?

A

Because the energy is lost through the food chain from one organism to another.

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14
Q

Plants need light to grow, apart from this what other resources do they need?

A

Water and minerals.

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15
Q

What word describes the moving of animals from one part of Earth to another?

A

Migration

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16
Q

What is the name of an organism which eats a producer?

A

Consumer.

17
Q

How is this bird adapted to eat flesh?

A

A short, sharp and hooked beak can be used to tear flesh.

18
Q

What is the name for a predator at the top of the food chain?

A

Top predator.

19
Q

Changes during a year are called ___________ changes.

A

Seasonal.

20
Q

Changes during a 24hr period are called _________ changes

A

Daily

21
Q

What do you call an animal which comes out mainly at night?

A

Nocturnal.

22
Q

Why are some animals nocturnal?

A

So there are less animals around which might attack it.

23
Q

Why do some animals such as Bears hibernate in winter?

A

So it doesnt have to eat when there is little food in winter.

24
Q

Give an example of an inherited feature.

A

Eye colour, hair colour, skin colour

25
Q

Give an example of a feature which is not inherited, it is an environmental feature.

A

Scars, tattoos, piercings, broken bones.