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Question:
Types of cells in two celled pollen grains are ____.
Types of cells in two celled pollen grains are ____.
Updated On: May 14, 2024
- Central cell and Synergids
- Antipodals and Megaspore
- Micropylar and filliform
- Vegetative and Generative
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The Correct Option is D
Solution and Explanation
In two-celled pollen grains, there are two cells:
- The vegetative cell
- The generative cell
The vegetative cell is responsible for forming the pollen tube, while the generative cell undergoes division to produce two sperm cells.
So, the correct option is (D): Vegetative and Generative.
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Concepts Used:
Gymnosperms
Gymnosperms are flowerless plants that produce cones and seeds. It literally means "naked seed". They sit exposed on the surface of leaf-like structures called bracts. Gymnosperms are vascular plants of the subkingdom Embyophyta and include conifers, cycads, ginkgoes, and gnetophytes. They are abundant in temperate forest and boreal forest biomes with species that can tolerate moist or dry conditions.
Characteristics of Gymnosperms
- They do not produce flowers.
- Seeds are not formed inside a fruit.
- They are found in colder regions where snowfall occurs.
- They form cones with reproductive structures.
- Xylem does not have vessels and the phloem and it has no companion cells and sieve tubes.
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