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Animals like lantern fish, sponges, corals, etc., belongs to the sunlit zone or twilight zone or dark zone?

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Important Questions on Organisms and Populations

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Biology>Ecology and Environment>Organisms and Populations>Organisms and Its Environment
Which of the following is incorrect pair regarding cyclomorphosis in Daphnia?
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Niche is
MEDIUM
Biology>Ecology and Environment>Organisms and Populations>Organisms and Its Environment
Most animals are tree dwellers in a:
MEDIUM
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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>Organisms and Its Environment

Following are the responses of different animals to various abiotic factors. Describe each one with the help of an example.

  • Migrate
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Give three adaptations in organisms by which they avoid predation.
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An association of individuals of different species living in the same habitat and having functional interactions is:
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In an ecosystem, each organism occupies a particular place and has a functional role and it is known as
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Define Niche.
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Biology>Ecology and Environment>Organisms and Populations>Organisms and Its Environment
Define stenothermal organisms.
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Match the following:

  Set-I   Set-II
(A) Endosmosis (I) High altitude adaptation
(B) Exosmosis (II) Desert adaptation
(C) Metabolic water (III) Problem for fresh water animal
(D) Increase in the RBC production (IV) Problem for marine animals

The correct match is

MEDIUM
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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>Organisms and Its Environment

What special adaptations can be seen in the following organisms?

Planktons

HARD
Biology>Ecology and Environment>Organisms and Populations>Organisms and Its Environment
Draw a lake showing different zones. Why are they called so?
HARD
Biology>Ecology and Environment>Organisms and Populations>Organisms and Its Environment
Visit a nearby pond or a lake. Record the organisms you have observed and their adaptations?
MEDIUM
Biology>Ecology and Environment>Organisms and Populations>Organisms and Its Environment

Marine water fishes drink more water than freshwater fishes. Do you agree? Justify

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

If an animal of the euphotic zone has to survive in the abyssal zone, what adaptations are required to survive there?

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Biology>Ecology and Environment>Organisms and Populations>Organisms and Its Environment
In the chapter on ecosystem, we had studied about the mangrove ecosystems. In what way it is differ from marine ecosystem.
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Biology>Ecology and Environment>Organisms and Populations>Organisms and Its Environment
Amphibians are wonderful creatures on the earth. How do you appreciate their adaptation?
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Biology>Ecology and Environment>Organisms and Populations>Organisms and Its Environment
Are there any rivers meeting in the Bay of Bengal in the Mangrove forest ecosystem to collect information and make a note on them?