Niche is the position occupied by the species in an environment. It refers to the occupation of the species in an ecosystem. Niche determines the survival, requirement for shelter and food, and its reproduction process a species.

the functional role played by organism where it lives

the range of temperature that the organism needs to live

the physical space where an organism lives

all the biological factors in the organism's environment

Observe the following graph of regulators In the above graph I, II and III represent

I II III Regulators Conformers Partial regulators

I II III Conformers Regulators Partial regulators

I II III Partial regulators Conformers Regulators

I II III Partial regulators Regulators Conformers

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Local population of the individuals of same species which are genetically and morphologically adapted to their environment are called

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Important Questions on Organisms and Populations

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

Assertion

(A)

: In brackish water, stenohaline animals are abundant
Reason

(R)

: Brackish water animals can withstand wide fluctuations in salinity

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

Identify the elements which lead to much variation in the physical and chemical conditions of different habitats.
a) Only components such as Temperature, water, light and soil.
b) Only components such as pathogens, parasites, predators and competitors of the organism with which they interact constantly.
c) The physiology and anatomy of organisms
d) Both a and b

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

With reference to temperature adaptations, identify $A, B, C$ of the following graph

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

One of the following is not a sacred grove

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

What is the size of animals belonging to mesofauna?

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

Assertion: Species is an ecological unit.

Reason: Individuals of a species share the same ecological niche.

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

In an ecosystem, each organism occupies a particular place and has a functional role and it is known as

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

Stratification is more common in which of the following?

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

Mention the population interactions that exist among the following:

Abingdon tortoise and goats in Galapagos islands.

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

What are the surroundings in which organisms live called?

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

Statement I: Amazon rain forest is called the lungs of our planet.
Statement II: The number of species per unit area is called species richness.

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

Define Niche.

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

Light is an ecological factor that shows its influence on many biological activities like pigmentation, metabolism, etc. Cave dwellers exhibit:

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

Which of the following is incorrect pair regarding cyclomorphosis in Daphnia

?

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

Niche is

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

In Amphibian and reptiles, the body temperature changes corresponding to external temperature. The organisms which show this kind of response is termed as -

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Biology>Ecology and Environment>Organisms and Populations>Organism and Its Environment

Observe the following graph of regulators

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