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Heterosporous pteridophyte is...

Heterosporous pteridophyte is

A

Lycopodium

B

Nephrolepis

C

Selaginella

D

Equisetum

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The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Pteridophytes**: - Pteridophytes are a group of vascular plants that reproduce via spores. They include ferns and horsetails and are the first terrestrial plants to possess vascular tissues (xylem and phloem). 2. **Identifying Sporophyte Dominance**: - In pteridophytes, the dominant phase of the life cycle is the sporophyte. This means that the sporophyte generation is the most prominent and visible stage in their life cycle. 3. **Homosporous vs. Heterosporous**: - Most pteridophytes are homosporous, meaning they produce only one type of spore that develops into a gametophyte. In contrast, heterosporous pteridophytes produce two different types of spores: microspores (small) and megaspores (large). 4. **Defining Heterosporous**: - Heterosporous plants produce two types of spores that develop into male and female gametophytes. This adaptation allows for sexual reproduction and increases genetic diversity. 5. **Examples of Heterosporous Pteridophytes**: - Some examples of heterosporous pteridophytes include *Salvinia* and *Selaginella*. These plants are characterized by their ability to produce both microspores and megaspores. 6. **Conclusion**: - Therefore, when asked about heterosporous pteridophytes, the correct examples include *Selaginella* and *Salvinia*. Among the options provided, *Selaginella* is a prominent example of a heterosporous pteridophyte.
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The heterosporous pteridophytes are