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MCQs

Total Questions : 572 | Page 53 of 58 pages
Question 521. In plants closed stomata reduce due to
  1.    rate of transpiration only
  2.    amount of carbon dioxide entering in the leaf only
  3.    the rate of respiration
  4.    rate of transpiration and amount of carbon dioxide entering in leaf
 Discuss Question
Answer: Option D. -> rate of transpiration and amount of carbon dioxide entering in leaf
Answer: (d).rate of transpiration and amount of carbon dioxide entering in leaf
Question 522. Stomata guard cells perform all functions but
  1.    producing sugars
  2.    protecting the inner regions of leaf
  3.    regulating the amount of water lost
  4.    chloroplast storage
 Discuss Question
Answer: Option B. -> protecting the inner regions of leaf
Answer: (b).protecting the inner regions of leaf
Question 523. Production of only one kind of spores is called
  1.    heterospory
  2.    homospory
  3.    dispory
  4.    monospory
 Discuss Question
Answer: Option B. -> homospory
Answer: (b).homospory
Question 524. Leaves called fronds are coiled at immature stages this pattern constituted is termed as
  1.    circination
  2.    frond leaves
  3.    circinate vernation
  4.    leafless
 Discuss Question
Answer: Option C. -> circinate vernation
Answer: (c).circinate vernation
Question 525. Locopsids are also called
  1.    fungus
  2.    algae
  3.    mosses
  4.    ferns
 Discuss Question
Answer: Option C. -> mosses
Answer: (c).mosses
Question 526. Non-vascular plants are also called as
  1.    Bryophyta
  2.    tracheophyta
  3.    chronophyta
  4.    alveophyta
 Discuss Question
Answer: Option A. -> Bryophyta
Answer: (a).Bryophyta
Question 527. Sepal and petals gives protection to the
  1.    stamen
  2.    carpel
  3.    Both a and b
  4.    filament
 Discuss Question
Answer: Option C. -> Both a and b
Answer: (c).Both a and b
Question 528. Hard ropes can be made from the xylem fibers of
  1.    hemp trees
  2.    angsana trees
  3.    sisal plants
  4.    balsam tree
 Discuss Question
Answer: Option C. -> sisal plants
Answer: (c).sisal plants
Question 529. Pendulous stamens and slender filaments are characteristics of plants pollinated by
  1.    wind
  2.    insects
  3.    water
  4.    soil
 Discuss Question
Answer: Option B. -> insects
Answer: (b).insects
Question 530. Stamens are not usually pendulous in plants so pollination takes place by
  1.    wind
  2.    insects
  3.    water
  4.    animals
 Discuss Question
Answer: Option B. -> insects
Answer: (b).insects

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