2.2 : Communities and ecosystems (2024)

Pyramids of Matter refer to the flow of energy through a trophic level. 

True or false.

• True

• False

Pyramids of Matter refer to the flow of energy through a trophic level. 

True or false. If it's False give reason

An ecosystem is a community and the physical environment it interacts with. True or False.

• True

• False

Photosynthesis produces the raw materials for producing which one of the following ? 

• Energy    

• Biomass

• Bio Energy

Feeding relationships can be modelled using food chains, food webs, and Biomass. 

True or false.

• True

• False

Feeding relationships can be modelled using food chains, food webs, and Biomass. 

True or false. If it's False give reason.

Pyramids are narrower towards the apex due to the first law of thermodynamics. 

True or false.

• True

• False

Pyramids are narrower towards the apex due to the first law of thermodynamics. 

True or false. If it's false give reason.

Due to marked seasonal variations, pyramids of biomass can show greater quantities at higher trophic levels as they represent the biomass present at a given time.

          

• Variation in Biomass

• Marked seasonal Variations

• Variation in Diversity

Producers are also known as autotrophs. - True or false.

• True

• False