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In: Biology

The processes of angiosperm pollination results in haploid, diploid, and triploid cells.  Explain how this is possible....

  1. The processes of angiosperm pollination results in haploid, diploid, and triploid cells.  Explain how this is possible.
  2. Coevolution occurs when two species interact in such a way that mutually increases each other’s individual reproductive fitness. This is clearly evident by the relationship between insect pollinators and angiosperms.  Explain why the reproductive fitness of insects is increased when they visit flowers, and why the reproductive fitness of flowering plants is increased by rewarding insects with nectar.

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Expert Solution

The process of pollination in angiosperms begin with the reduction division of microsporocyte and megasporocyte to form microspores and megaspores respectively. Microsporocyte and megasporocyte are diploid but microspores and megaspores are haploid. Microspores and Megaspores undergo mitosis to form sperm cells and female gametophyte respectively. The sperm cells and female gametophyte are haploid.

One of the sperm cells fuses with the egg cell to form a diploid zygote. This is called as syngamy.

The Other sperm cell fuses with two polar nuclei to form a triploid endosperm. This is called as triple fusion. Endosperm is the nutritive tissue for the growing embryo.

This is how, haploid diploid and triploid phases are formed during the process of pollination and fertilization in angiosperms.

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gladiator answered 2 years ago
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