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Science > Biodiversity S1 > Flashcards

Biodiversity S1 Flashcards

1
Q

What does biodiversity mean?

A

Biodiversity is the variety of all living things on earth.

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2
Q

Why would an area be said to have high biodiversity?

A

Areas of high biodiversity have lots of different plant and animal species.

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3
Q

What is an ecosystem?

A

An ecosystem is made up of a Habitat and a Community

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4
Q

What is a habitat?

A

The place where an organism lives.

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5
Q

What is a community?

A

The group of organisms that live in a particular area.

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6
Q

What is a biome?

A

Biomes are areas of the planet with similar climates, landscapes, animals and plants.

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7
Q

What is grouping things based on shared characteristics called?

A

Classification

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8
Q

What is the difference between vertebrate and invertebrate?

A

Vertebrate have a backbone while invertebrate do not and instead have a exoskeleton.

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9
Q

What are the characteristics of reptiles?

A

Have a skeleton/backbone, Cold blooded, Dry scales, Often lay eggs.

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10
Q

What are the characteristics of amphibians?

A

Have a skeleton/backbone, Cold blooded, Wet, soft skin, Lay eggs (only in water).

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11
Q

What are the characteristics of mammals?

A

Have a skeleton/backbone, Warm blooded, Skin coated in fur, Give birth to live young, Feed young with milk.

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12
Q

What are the characteristics of birds?

A

Have a skeleton/backbone, Warm blooded, Feathers, Lay eggs.

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13
Q

What are the characteristics of fish?

A

Have a skeleton/backbone, Cold blooded, Wet scales, Fins and gills, Line in water, Often lay eggs.

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14
Q

How do you use of branching key?

A

You look at the thing your trying to identify and if it’s yes you would follow one way and if it’s no you would follow the other key until you identify your species.

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15
Q

What does adaptation mean?

A

Animals and plants are adapted to their habitats. This means that they have special features that help them to survive.

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16
Q

Give 2 examples of each a plant and an animal adaptation.

A

Polar Bear: Thick white fur for camouflage, Small ears to prevent heat loss
Cactus: Shallow roots to soak up rain water, Spikes to protect from animals and to avoid moisture loss.

17
Q

What is a food chain?

A

A food chain represents the transfer of energy between living things. (The arrows represent the direction of energy flow)

18
Q

Would an owl be an owl be a producer or consumer?

A

Consumer

19
Q

Would grass be a producer or consumer?

A

Producer

20
Q

Give an example of a producer.

A

Green plants are producers as they use the sun’s energy to make their own food.

21
Q

Give an example of a consumer.

A

Animals are consumers as they get their energy by feeding on other living things.

22
Q

What does a herbivore eat?

A

A herbivore only eats plants.

23
Q

What does a carnivore eat?

A

A carnivore only eats meat.

24
Q

What does an omnivore eat?

A

An omnivore eats plants and meat.

25
Q

What is a food web?

A

Most animals eat more than one species so food chains can be put together in a food web. Food webs show how the food chains are connected.

26
Q

What happens to a food web when its disturbed?

A

If a species is removed from a food web this can have a catastrophic effect on the other species in the food web.

27
Q

What is a abiotic factor?

A

Abiotic factors are nonliving factors that affect where an organism lives.

28
Q

Name 4 abiotic factors.

A

Light intensity, Temperature, Soil pH, Soil moisture.

29
Q

What is Photosynthesis?

A

Photosynthesis is the process by which green plants make their own food.

30
Q

What are the raw materials of photosynthesis?

A

Carbon dioxide and Water.

31
Q

What are the products of photosynthesis?

A

Sugar and Oxygen.

32
Q

Name 5 threats to biodiversity.

A

Poaching, overfishing, overpopulation, consumption, pollution, destruction of natural habitats, climate change, food waste, deforestation.

33
Q

What does endangered mean?

A

A living thing is endangered if its at risk of extinction.

34
Q

What does Extinct mean?

A

If a living thing is extinct it means there are none left in the world.

35
Q

How do you calculate an average?

A

You add all the numbers you have together and then divide the answer by how many numbers you started with.

36
Q

What are Essential requirements of photosynthesis?

A

Light and Chlorophyll

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