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MCQs

Total Questions : 572 | Page 3 of 58 pages
Question 21. The phloem vessel cannot be collapse as their walls are
  1.    non lignified
  2.    cutinized
  3.    lignified
  4.    thick
 Discuss Question
Answer: Option C. -> lignified
Answer: (c).lignified
Question 22. As sieve tube cell gain its maturity, it lost its organelles except
  1.    thick layer of cytoplasm
  2.    thin layer of cytoplasm
  3.    middle layer of cytoplasm
  4.    whole cytoplasm
 Discuss Question
Answer: Option B. -> thin layer of cytoplasm
Answer: (b).thin layer of cytoplasm
Question 23. In root hair cells energy for active transport provided by
  1.    oxidative respiration
  2.    cellular respiration
  3.    non oxidative respiration
  4.    non cellular respiration
 Discuss Question
Answer: Option B. -> cellular respiration
Answer: (b).cellular respiration
Question 24. Plant tissues responsible for providing mechanical support to plant is
  1.    phloem
  2.    xylem
  3.    vascular
  4.    all
 Discuss Question
Answer: Option B. -> xylem
Answer: (b).xylem
Question 25. The root area where maximum absorption of mineral and salts takes place is
  1.    zone of elongation
  2.    zone of maturation
  3.    growing zone
  4.    root cap
 Discuss Question
Answer: Option B. -> zone of maturation
Answer: (b).zone of maturation
Question 26. Pollen of pinus can float in air for a longer period due to presence of
  1.    oxygen
  2.    wings
  3.    tail
  4.    seed coat
 Discuss Question
Answer: Option B. -> wings
Answer: (b).wings
Question 27. Literal meaning of gymnosperms is
  1.    naked seeds
  2.    grown seeds
  3.    whole seeds
  4.    dormant seeds
 Discuss Question
Answer: Option A. -> naked seeds
Answer: (a).naked seeds
Question 28. Megaspore which develop into female gametophyte consists of cells that are only
  1.    2
  2.    7
  3.    11
  4.    3
 Discuss Question
Answer: Option B. -> 7
Answer: (b).7
Question 29. Specialized covering around megasporangium are called
  1.    integuments
  2.    sperms
  3.    ovum
  4.    ovary
 Discuss Question
Answer: Option A. -> integuments
Answer: (a).integuments
Question 30. Fertilization in young sporophyte which is first attached to gametophyte later becomes
  1.    mutated
  2.    indepdent
  3.    fertilized
  4.    developed
 Discuss Question
Answer: Option B. -> indepdent
Answer: (b).indepdent

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