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Motile, bi-flagellated antherozoids are ...

Motile, bi-flagellated antherozoids are found in
1 Anthoceros
2 Pinus
3 Selaginella
4 Both (1) and ( 3)

A

Anthoceros

B

Pinus

C

Selaginella

D

Both (1) and ( 3)

Text Solution

AI Generated Solution

The correct Answer is:
To determine where motile, bi-flagellated antherozoids are found, we can analyze each option provided in the question step by step. ### Step 1: Understanding Antherozoids Antherozoids are the male gametes produced in certain plants. They are motile and bi-flagellated, which means they have two flagella that help them move. This characteristic is typically found in certain groups of plants, particularly bryophytes and pteridophytes. ### Step 2: Analyzing the Options 1. **Anthoceros**: This is a genus of hornworts, which are classified as bryophytes. Bryophytes are known to produce motile, bi-flagellated antherozoids. Therefore, this option is correct. 2. **Pinus**: Pinus is a genus of gymnosperms. Gymnosperms do not produce motile antherozoids; instead, they produce pollen grains, which are non-motile male gametophytes. Thus, this option is incorrect. 3. **Selaginella**: Selaginella is a genus of pteridophytes (ferns and their relatives). Pteridophytes are known to produce motile, bi-flagellated antherozoids. Therefore, this option is also correct. 4. **Both (1) and (3)**: Since both Anthoceros (bryophyte) and Selaginella (pteridophyte) produce motile, bi-flagellated antherozoids, this option is correct as well. ### Conclusion The correct answer is **Both (1) and (3)**, as both Anthoceros and Selaginella produce motile, bi-flagellated antherozoids. ---
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