Biology Revision - ENERGY AND BIOMASS IN FOOD CHAIN
15 Questions
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B1. 5
Questions and Answers
- 1.Every time you move up a stage (trophic level) in a food chain there is...
- A.
More energy
- B.
Less energy
- C.
More biomass
- D.
Less biomass
- 2.There is usually a fewer _________ of organisms as you move up a trophic level as well eg - 100 dandelions ... feed ... 10 rabbits ...which feed... 1 fox
- 3.However this is not always true as 100 dandelions ... feed ... 10 rabbits ...which feed... 1 fox ... which could feed... 500 fleas therefore its often better to look at ___________ rather than numbers of organisms.
- 4.Each bar on a pyramid of biomass = how much each level would 'weigh' if you put all the animals together. So the fox would have a much ______ biomass than the fleas
- 5.Food chains -
- Plant - primary ________
- 6.Food chains -
- Plant - primary producer
- _________ - primary consumer
- 7.Food chains -
- Plant - primary producer
- Herbivore - primary consumer
- _______ - secondary consumer
- 8.Food chains -
- Plant - primary producer
- Herbivore - primary consumer
- Carnivore - secondary consumer
- Carnivore - _________ consumer
- 9.Food chains -
- Plant - primary producer
- Herbivore - primary consumer
- Carnivore - secondary consumer
- Carnivore - tertiary consumer
- ___ carnivore - quaternary consumer
- 10.Wet mass =
- A.
Total mass when wet
- B.
Total mass including water
- C.
Total mass after rain
- D.
Mass of water in organism
- 11.Dry mass =
- A.
Mass after rain
- B.
Mass when normal - not wet
- C.
Total mass exluding water
- 12.Respiration is the breakdown of _________ to release energy
- 13.Energy losses are mainly due to...
- _____ products - faeces and urine - not all food is digested and absorbed, some is lost in waste
- 14.Energy losses are mainly due to...
- waste products - faeces and urine - not all food is digested and absorbed, some is lost in waste
- _____ production - in warm blooded animals - produced by respiration
- 15.Energy losses are mainly due to...
- waste products - faeces and urine - not all food is digested and absorbed, some is lost in waste
- heat production - in warm blooded animals - produced by energy from respiration
- m________ in animals - requires energy from respiration
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