Biology MCQs with answers Page - 28

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Q. A disorder which is linked to the Y chromosome in humans (holandric) will

  • (A) never be passed from father to child
  • (B) show a pattern of skipping generations in a family
  • (C) only be expressed in males whose mothers were a carrier of the gene
  • (D) be passed only from father to son

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Q. Ornithophily is effected by

  • (A) insects
  • (B) birds
  • (C) snails
  • (D) bats

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Q. Which of the following from the following diseases usually spreads through milk -

  • (A) Jaundice
  • (B) Diphtheria
  • (C) Tuberculosis
  • (D) Cholera

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Q. If the length of a simple pendulum is halved then its period of oscillation is

  • (A) halved
  • (B) increased by a factor 2
  • (C) decreased by a factor 2
  • (D) doubled

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Q. Which of the following chromosomal combination is responsible for maleness in man -

  • (A) XO
  • (B) XXX
  • (C) XX
  • (D) XY

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Q. Which of the following one of the following parts of the human brainis the regulating centre for swallowing & vomiting -

  • (A) Pons
  • (B) Cerebellum
  • (C) Medulla Oblongata
  • (D) Cerebrum

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Q. Translocation of water is

  • (A) Apoplastic
  • (B) Symplastic
  • (C) Both (1) & (2)
  • (D) None of the above

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Q. The process of photosynthesis involves conversion of

  • (A) chemical energy into radiant energy
  • (B) solar energy into chemical energy
  • (C) chemical energy into mechanical energy
  • (D) mechanical energy into solar energy

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Q. Consider the following statements
1. The common blue green algae, Spirogyra and Ulothrix, are found in both fresh water ponds and oceans.
2. The Chameleon can look ahead with one eye and at the same time look behind with another.
Which of these statements is/are right?

  • (A) Both 1 and 2
  • (B) Neither 1 nor 2
  • (C) Only 2
  • (D) Only 1

A

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Q. The saliva helps in the digestion of

  • (A) Proteins
  • (B) Fibres
  • (C) Starch
  • (D) Fats

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