Biology 5 -energy

Question 1

Inter specific competition

Answer 1

Organisms compete again other different species for resources

Question 2

Intraspecific competition

Answer 2

Organisms of same species compete for resources

Question 3

Which type of competition has the greatest impact on organisms

Answer 3

Intraspecific

Question 4

Predator-prey cycles are always out of

Answer 4

Phase with eachother

Question 5

The bottom part of the biomass pyramid shows what

Answer 5

The producer

Question 6

The bar just above the producer is always what

Answer 6

Primary consumer

Question 7

Why is the biomass pyramid always a pyramid shape?

Answer 7

Most of the biomass is lost due to heat and energy doesn’t go to the next level

Hence why it’s generally only 5 bars long

Question 8

Efficiency of energy flow

Answer 8

Energy available for next level
———————————————
Energy that was available from previous level

Question 9

How is elements returned cycled back to the food chain

Answer 9

By decay

Question 10

Detritus feeders and microorganisms feed on what causing what

Answer 10

Feed on remains of plants/animals

Releasing O2

Question 11

What removed carbon from the atmosphere

Answer 11

Photosynthesis from plants

Question 12

Nitrogen fixation can be done through what two ways

Answer 12

Lighting (enough energy to combine oxygen/nitrogen to give nitrates)

Nitrogen fixing bacteria (converts nitrogen from air into other compounds)

Question 13

What’s the first stage of the nitrogen cycle

Answer 13

Nitrogen fixation

Question 14

What’s the 2nd stage of nitrogen cycle

Answer 14

Decomposition

Question 15

Name two decomposers.

What do they convert

Answer 15

Bacteria / fungi

Dead animals/plants proteins and urea into ammonium

Question 16

What’s the 3rd stage of nitrogen cycle

Answer 16

Nitrification

Question 17

How are plants able to absorb the ammonium produced by decomposers

Answer 17

Nitrifying bacteria change ammonium into nitrates

So plants can absorb nitrates

Question 18

What’s the final stage of the nitrogen cycle

Answer 18

Denitrification

Question 19

What happens during denitrification

Answer 19

Denitrifying bacteria change nitrates into nitrogen gas via respiration

Happens under anaerobic conditions hence occurs in waterlogged soils

Question 20

Nitrogen fixing bacteria can be found where

What sort of relationship does this create

Answer 20

Found in soil/ nodules on the roots of legume plants like peas

Creates a mutualistic relationship