Question

Arrange the following in CORRECT sequential order on the basis of development:

• A. Pollen grains, Sporogenus tissue, Microspore tetrad, Pollen mother cell, Male gametes
• B. Sporogenus tissue, Pollen mother cell, Microspore tetrad, Pollen grains, Male gametes
• C. Sporogenus tissue, Pollen grains, Pollen mother cell, Microspore tetrad, Male gametes
• D. Pollen grains, Pollen mother cell, Sporogenus tissue, Microspore tetrad, Male gametes

Answer 1

Answer:

B. Sporogenus tissue, Pollen mother cell, Microspore tetrad, Pollen grains, Male gametes

• Sporogenous Tissue: This is the initial stage in the development of male gametes. Sporogenous tissue is a specialized region within the anther of the flower, and it contains microspore mother cells.

• Pollen Mother Cell: Microspore mother cells, found in the sporogenous tissue, undergo meiosis to give rise to microspores.

• Microspore Tetrad: Following meiosis, the microspore mother cell produces a cluster of microspores called a microspore tetrad.

• Pollen Grain: Each microspore from the tetrad develops into a mature pollen grain, which contains the male gametophyte. This male gametophyte includes two sperm cells, which are the male gametes.

• Male Gametes: The mature pollen grain, when transported to the stigma of a compatible flower, germinates and releases its male gametes (sperm cells). These sperm cells participate in the fertilization process by uniting with the female gametes in the ovule.