The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for

  • responsiveness to touch

  • interaction with the environment and progressive evolution

  • reproduction

  • reproduction


C.

reproduction

All living things reproduce passing on traits from one generation to next. Non-living things cannot reproduce.

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Which one of the following pairs of organisms are exotic species introduced in India?

  • ficus religiosa , lantana camara

  • lantana camara, water hyacinth

  • water hyacinth, prosopis cinereria

  • water hyacinth, prosopis cinereria


C.

water hyacinth, prosopis cinereria

A species of organisms that is not native to a locality and having been moved there from its natural range by humans or other agents is called exotic species.

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Select the correct statement from the following:

  • Darwinian variations are small and directionless

  • Fitness is the end result of the ability to adapt and gets selected by nature

  • All mammals except whales and camels have seven cervical vertebrae

  • All mammals except whales and camels have seven cervical vertebrae


B.

Fitness is the end result of the ability to adapt and gets selected by nature

Fitness (survival of the fittest) is a result of selection and proliferation of only those organisms which were most suitably adapted to the environment and get selected by nature.

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Probiotics are

  • safe antibiotics

  • cancer inducing microbes

  • new kind of food allergens

  • new kind of food allergens


D.

new kind of food allergens

Probiotic is a microbial preparation that helps to establish a population of beneficial microorganisms in the body to maintain health and with the potential to prevent disease.

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Two plants can be conclusively said to belong to the same species if they

  • can reproduce freely with each other and form seeds

  • have more than 90 per cent similar genes

  • look similar and possess identical secondary metabolites

  • look similar and possess identical secondary metabolites


A.

can reproduce freely with each other and form seeds

Fitness (survival of the fittest) is a result of selection and proliferation of only those organisms which were most suitably adapted to the environment and get selected by nature.

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