Angiosperm Flower Development and Polyembryony Quiz
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Questions and Answers

During megasporogenesis, which type of cell division occurs?

  • Binary fission
  • Budding
  • Mitosis
  • Meiosis (correct)

In an angiosperm flower, where does the development of the female gametophyte take place?

  • Stigma
  • Sepal
  • Ovule (correct)
  • Anther

What structures are formed at the end of microsporogenesis?

  • Megasporangia
  • Megaspores
  • Microsporangia
  • Microspore tetrads (correct)

What is the term for the developmental sequence involving microspore tetrad, pollen grain, and male gametes?

<p>Microgametogenesis (C)</p> Signup and view all the answers

What is the primary characteristic of monosporic development of the female gametophyte?

<p>Development from a single initial cell (B)</p> Signup and view all the answers

Which process leads to the 7-celled, 8-nucleate nature of the female gametophyte?

<p>Double fertilization (D)</p> Signup and view all the answers

What is the event that occurs when the pollen tube enters the embryo sac?

<p>Syngamy (B)</p> Signup and view all the answers

Which structure forms the endosperm tissue in angiosperms?

<p>Primary endosperm nucleus (B)</p> Signup and view all the answers

What is the term used for the process of formation of seeds without fertilisation?

<p>Apomixis (D)</p> Signup and view all the answers

In angiosperms, what is the structure that develops into a fruit after fertilisation?

<p>Ovary (A)</p> Signup and view all the answers

Which event occurs in each embryo sac involving syngamy and triple fusion?

<p>Double fertilisation (B)</p> Signup and view all the answers

What is the term used for the process where the pollen grain germinates on the stigma during pollination?

<p>Germination (A)</p> Signup and view all the answers

What is the term for the process of pollen grains coming in contact with the stigma to effect pollination?

<p>Chasmogamy (A)</p> Signup and view all the answers

In cleistogamous flowers, why are they invariably autogamous?

<p>Close proximity of anthers and stigma (D)</p> Signup and view all the answers

Which type of flowers produce assured seed-set even in the absence of pollinators?

<p>Cleistogamous flowers (A)</p> Signup and view all the answers

What type of pollination involves the transfer of pollen grains from anther to stigma of another flower of the same plant?

<p>Geitonogamy (D)</p> Signup and view all the answers

Which type of pollination brings genetically different pollen grains to the stigma?

<p>Xenogamy (B)</p> Signup and view all the answers

What is the major advantage of cleistogamy to plants?

<p>Assured seed-set without pollinators (B)</p> Signup and view all the answers

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