Both, autogamy and geitonogamy are prevented in

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Question:
Both, autogamy and geitonogamy are prevented in

1.Castor

2.Maize

3.Cucumber

4.Papaya

Posted Date:-2021-06-19 23:44:07

More MCQS Questions and answers

  1. An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is
  2. Apomictic embryos in citrus arise from
  3. Apomixis is a type of reproduction that results is the development of a/an
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  5. Double fertilization was first discovered by Nawaschin (1898) in
  6. Egg apparatus consists of
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  8. Even in absence of pollinating agents seed-setting is assured in
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  11. In a type of apomixis known as adventive embryony, embryos develop directly from the
  12. In anatropous ovule what is the direction of micropyle?
  13. In Angiosperms pollen tube liberate their male gametes into the:
  14. In nature, cleistogamous flowers are
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  16. In which one of the following, male and female gametophytes do not have free living independent existence
  17. In which one pair both the plants can be vegetatively propagated by leaf pieces
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  19. Ornithophily refers to the pollination by which of the following:
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  39. Which of the following pairs in angiosperms are diploid and triploid, respectively?
  40. Which of the following statements about sporopollenin is false?
  41. Which one of the following is surrounded by a callose wall?
  42. Which one of the following pairs of plant structures has haploid number of chromosomes?
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