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Which one of the following groups of animals reproduces only by sexual means?
Options
(a) Ctenophora
(b) Cnidaria
(c) Porifera
(d) Protozoa
Correct Answer:
Ctenophora
Explanation:
In Ctenophora, sexes are not separate. Reproduction takes place only by sexual means. In Cnidaria, which exist in both forms, polyps produce medusae asexually and medusae form the polyps sexually. Porifera (sponge) reproduce asexually by fragmentation and sexually by formation of gametes. Protozoans come under protista which reproduce asexually and sexually by cell fusion and zygote formation.
Related Questions: - Phagosome and pinosomes collectively referred to as
- Energy transfers or transformations are never 100% efficient. This is due to
- Potato and sweet potato
- During the metaphase stage of mitosis spindle fibres attach to chromosomes at
- Flagella with single strand and composed of flagellin is found in
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Plant and Animal Kingdom
(295)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Phagosome and pinosomes collectively referred to as
- Energy transfers or transformations are never 100% efficient. This is due to
- Potato and sweet potato
- During the metaphase stage of mitosis spindle fibres attach to chromosomes at
- Flagella with single strand and composed of flagellin is found in
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Plant and Animal Kingdom (295)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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