Select the correct option regarding adaptation.

  • A
    Adaptations have evolved over a long evolutionary time.
  • B
    They are genetically fixed.
  • C
    They enable the organism to survive and reproduce in its habitat.
  • D
    All of the above.

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Give one example for each of the following:
$(i)$ Eurythermal plant species: $................$.
$(ii)$ $A$ hot water spring organism: $................$.
$(iii)$ An organism seen in deep ocean trenches: $................$.
$(iv)$ An organism seen in a compost pit: $................$.
$(v)$ $A$ parasitic angiosperm: $................$.
$(vi)$ $A$ stenothermal plant species: $................$.
$(vii)$ Soil organism: $................$.
$(viii)$ $A$ benthic animal: $................$.
$(ix)$ Antifreeze compound seen in Antarctic fish: $................$.
$(x)$ An organism which can conform: $................$.

Alpine forests of the Himalayas have:

The biome characterized by broad-leaved,resinous,fire-resistant,and drought-enduring plants is:

When an organism moves away temporarily from a stressful habitat to a more hospitable area and returns when the stressful period is over,what is this process called?

Changes in the body form of some planktonic animals with seasonal changes in temperature are grouped under

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