Which of the following is a biotic factor?
The number of links in a food chain is:
The species that is threatened with extinction is called:
Aquatic microscopic animals are called:
In an aqueous environment microscopic animals and plants are collectively known as planktons which are microscopic organisms. Producer planktons are called as phytoplanktons e.g., diatoms, dinoflagellates, algae etc., Consumer planktons are called as zooplanktons e.g., Protozoans, larvae of animals.
Which of these is a biodegradable waste?
Greenhouse effect causes:
What is true of an ecosystem?
The sum total of the populations of the same kind of organisms constitute a:
____________ is any chemical substance that an organism requires to live.
The sum total of the variety of organisms in the biosphere is called:
The total amount of living tissue within a given trophic level is known as:
The term ‘detritivore’ includes:
Biodiversity’ is described as:
Which of these is a correct food chain?
What does a pyramid of biomass represent?
Bacteria and fungi serve an important role as:
The relationship between a human and a tapeworm is:
The arrows in a food chain represent:
A fish tank is an ecosystem because it includes:
__________feed on the waste material in an ecosystem including animal remains, animal faeces, and plant debris.