Year 8 Environment Flashcards

1
Q

What does a food chain represent?

A

The movement of energy and nutrients from one organism to another

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2
Q

What are the positions on the food chain?

A

Producer > Primary consumer > Secondary consumer > Tertiary consumer > Quaternary consumer

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3
Q

What are the parts of a plant?

A

Stigma, Ovary, Style, Nectary, Carpel, Anther, Petal, Filament, Ovule, Stamen
SOS N’CAPFOS

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4
Q

Why are seeds dispersed?

A

So there is less competition for space and light

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5
Q

What are the four ways seeds can be dispersed?

A

Wind, water, animal, explosions

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6
Q

What are the three conditions needed for a seed to germinate?

A

Moisture, oxygen, warmth

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7
Q

What is pollination?

A

Pollination is the transfer of pollen from the anthers of a flower to the stigma of the same or another flower

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8
Q

What is fertilisation in plants?

A

The fusion of the nuclei from a male and female sex cell. The male gamete is inside the pollen grain and the female gamete is inside the ovule

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9
Q

What is the scientific name for sex cells?

A

Gametes

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10
Q

What happens when an ovule is fertilised?

A

It grows a seed

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11
Q

What happens after fertilisation?

A

Most parts of the flower wither and die. The ovary gets bigger and forms the fruit. Inside the fruit are seeds

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12
Q

What is bioaccumulation?

A

The build up of pesticides through the food chain

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13
Q

What is a biomass pyramid?

A

A pyramid showing the amount of relative biomass in each level of the food chain.

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14
Q

What is a number pyramid?

A

A pyramid showing the amount of relative populations in each level of the food chain

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