Concept explainers
Where would you look to find the gametophyte generation of a flowering plant?
- at the shoot apical meristem
- at the root apical meristem
- in seeds
- in flower parts
- Flowering plants lack a gametophyte generation.
Introduction:
The gametophytes function in producing sperm cells that fertilize the female gamete cells. The male gametophytes are pollen grains that are formed in the anther, and the female gametophyte is a sac like structure known as embryo sac that has ovary in it at the prop of the pistil.
Answer to Problem 1TY
The correct answer is option (d) in flower parts
Explanation of Solution
Explanation/justification for the correct answer:
Option (d) in flower parts. The pollen sac in which microspores mature into pollen grains is seen in the anther that is at the last part of the stamen. The stamen is a long filament that supports anther and is found in the center of the flower. The ovule has female gametophyte, named as ovary, which is found in the carpel at the prop of the pistil of the flower. So, the correct answer is option (d).
Explanation for incorrect answer:
Option (a) at the shoot apical meristem. The shoot apical meristematic cell is seen at the pointed part of the shoot. Here, there is no presence of gametophytes. So, this is an incorrect option.
Option (b) at the root apical meristem. The root apical meristem is seen at the tip of the root which is at the bottom of the plant and no gametophytes are present. So, this is an incorrect answer.
Option (c) in seeds. The seeds are found inside the fruit that is formed after fertilization of female gamete by the male gamete. Hence, this answer is incorrect.
Option (e) flowering plants lack gametophyte generation. Flowers are colored petals that contain the male and female gametophyte that get fertilized. Hence, this answer is incorrect.
The pollen sac in which microspores mature into pollen grains is present in the anther that is at the end of the stamen. The stamen is a long filament that supports anther and is found in the center of the flower. The ovule has female gametophyte, named as ovary, which is found in the carpel at the at the tip of the shoot of the flower. So, the correct answer is option (d) in flower parts.
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Chapter 28 Solutions
Gen Combo Principles Of Biology; Connect Access Cards
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