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Heteronereis is (a) Member of Hirudinea...

Heteronereis is
(a) Member of Hirudinea
(b) Fresh water annelid
(c) Sexual phase of Nereis
(d) Sanguivorous animal.

A

Member of Hirudinea

B

Fresh water annelid

C

Sexual phase of Nereis

D

Sanguivorous animal.

Text Solution

AI Generated Solution

The correct Answer is:
To determine what Heteronereis is, we will analyze each option provided in the question step by step. ### Step 1: Understand Heteronereis Heteronereis is a type of worm that belongs to the phylum Annelida. Annelids are characterized by their segmented bodies. ### Step 2: Analyze the Options Now, let's evaluate each option: **(a) Member of Hirudinea**: - Hirudinea is a class within the phylum Annelida that includes leeches. Heteronereis is not a member of this class; it belongs to the family Nereidae. - **Conclusion**: This option is incorrect. **(b) Fresh water annelid**: - Heteronereis is primarily a marine organism, not a freshwater one. - **Conclusion**: This option is incorrect. **(c) Sexual phase of Nereis**: - Heteronereis is indeed a dimorphic form of Nereis, specifically the sexual phase. This means it plays a role in reproduction. - **Conclusion**: This option is correct. **(d) Sanguivorous animal**: - Sanguivorous animals feed on blood. Heteronereis is not sanguivorous; it is a carnivore that feeds on smaller organisms. - **Conclusion**: This option is incorrect. ### Final Answer After analyzing all the options, the correct answer is: **(c) Sexual phase of Nereis.** ---
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