Biology MCQs with answers Page - 22

Here, you will find a collection of MCQ questions on Biology. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Stem is usually

  • (A) Positively Phototropic
  • (B) Positively acrotropic
  • (C) Negatively geotropic
  • (D) Negatively Phototropic

A

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Q. A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed -

  • (A) From blue to pink
  • (B) From pink to blue–green
  • (C) From brown to blue–black
  • (D) From brown to orange–red

A

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Q. Among the following sets of salient features, which set does not exclusively characterize mammals -

  • (A) Presence of mammary glands, sweat glands & diaphragm
  • (B) Presence of mammary glands, hairs on skin & diaphragm
  • (C) Presence of sweat glands, hairs on skin & diphyodonts
  • (D) Presence of mammary glands, sweat glands & diaphragm

A

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Q. Insectivorous plants grow in soil which is deficient in

  • (A) Calcium
  • (B) Nitrogen
  • (C) Sodium
  • (D) Magnesium

A

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Q. A passenger standing in a bus is thrown outward when the bus takes a sudden turn. This happens due to

  • (A) Change in momentum
  • (B) Inertia of motion
  • (C) Outward pull on him
  • (D) Change in acceleration

A

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Q. Animals do not have enzyme systems which enable them to make use of the energy from:

  • (A) protein
  • (B) water
  • (C) fat
  • (D) carbohydrate

A

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Q. Which of the following endocrine gland is found in chest cavity -

  • (A) Pineal gland
  • (B) Thymus gland
  • (C) Thyroid gland
  • (D) Adrenal gland

A

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Q. When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because

  • (A) roots do not receive oxygen for respiration
  • (B) water from soil cannot rise to aerial parts
  • (C) tree is infected by the soil microbes
  • (D) roots are starved of energy

A

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Q. Phloem is a tissue found in

  • (A) Reproductive organs of animals
  • (B) Plants
  • (C) Mammals
  • (D) Insects

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