Short Answer TypeGive a scientific term :
Maximum number of individuals that an environment can support.
(a) Organisms may be conformers or regulators. Explain this statement and give one example of each.
(b) Why are there more conformers than regulators in the animal world ?
Describe the inter-relationship between productivity, gross primary productivity and net productivity.
The rate of biomass production per unit area, over a time period by plant during photosynthesis is called productivity. * It is expressed in (kcal m–2)yr–1 or g/m2 / yr or g m–2 y –1.* The amount of biomass or organic matter produced per unit area over a time period in plants during photosynthesis is called primary production.
Long Answer Type(a) Compare, giving reasons, the J-shaped and S-shaped models of population growth of a species.
(b) Explain ‘fitness of a species’’ as mentioned by Darwin.
Short Answer TypeFollowing are the responses of different animals to various abiotic factors. Describe each one with the help of an example.
(i) Regulate
(ii) Conform
(iii) Migrate
(iv) Suspend
If 8 individuals in a population of 80 butterflies die in a week, calculate the death rate of population of butteflies during that period.
Multiple Choice QuestionsIn biotic community, which of the following can be called protective device ?
Mimicry
Symbiosis
Competition
Parasitism
It is much easier for a small animal to run uphill than a large animal, because
smaller animals have a higher metabolic rate
small animals have a lower O2 requirement
the efficiency of muscles in large animals in less than in the small animals
the efficiency of muscles in large animals in less than in the small animals
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