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BIOLOGY MCQs

Total Questions : 2561 | Page 2 of 257 pages
Question 11. Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with
  1.    all gymnosperms, except conifers
  2.    only angiosperms
  3.    only conifers
  4.    angiosperms and all gymnosperms except conifers
 Discuss Question
Answer: Option C. -> only conifers
Question 12. One of the following is not a function of bones.
  1.    Place for muscle attachment
  2.    Protection of vital organs
  3.    Secretion of hormones for calcium regulation in blood and bones
  4.    Production of blood corpuscles
 Discuss Question
Answer: Option C. -> Secretion of hormones for calcium regulation in blood and bones
Question 13. Plants absorb most part of water needed by them through their
  1.    embryonic zone
  2.    growing point
  3.    root hairs
  4.    zone of elongation
 Discuss Question
Answer: Option C. -> root hairs
Question 14. Photo-oxidation is
  1.    photorespiration
  2.    photolysis
  3.    light and oxygen induced breakdown
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 15. Process of cell division can take place by
  1.    heterosis
  2.    fusion
  3.    mitosis
  4.    None of these
 Discuss Question
Answer: Option C. -> mitosis
Question 16. Most highly intelligent mammals are
  1.    whales
  2.    dolphins
  3.    elephants
  4.    kangaroos
 Discuss Question
Answer: Option B. -> dolphins
Question 17. Plant development is influenced by
  1.    quality of light only
  2.    quality and quantity of light
  3.    quality and duration of light
  4.    quality, quantity and duration of light
 Discuss Question
Answer: Option D. -> quality, quantity and duration of light
Question 18. Prokaryotic cells lack
  1.    nucleolus
  2.    nuclear membrane
  3.    membrane bound by organelles
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 19. Photosynthesis takes place faster in
  1.    yellow light
  2.    white light
  3.    red light
  4.    darkness
 Discuss Question
Answer: Option B. -> white light
Question 20. Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by
  1.    Robert Hooke
  2.    Robert Brown
  3.    Rudolf Virchow
  4.    Theodore Schwann
 Discuss Question
Answer: Option B. -> Robert Brown

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