Which of the following animals can change their gender during their life span?

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SSC CHSL Exam 2024 Tier-I Official Paper (Held On: 02 Jul, 2024 Shift 3)
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  1. Humans
  2. Ascaris
  3. nereis
  4. Snail

Answer (Detailed Solution Below)

Option 4 : Snail
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SSC CHSL Exam 2023 Tier-I Official Paper (Held On: 02 Aug 2023 Shift 1)
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Detailed Solution

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The correct answer is Snail

Key Points

  • Snails are one of the few animals capable of changing their gender during their lifespan.
  • This phenomenon is known as sequential hermaphroditism, where an organism changes its sex at some point in its life.
  • Snails, particularly those in the class Gastropoda, exhibit this trait to maximize their reproductive success.
  • The ability to change gender allows snails to adapt to their environment and increase the chances of finding a mate.

Additional Information

  • Sequential hermaphroditism is also observed in other species such as certain fish and plants.
  • There are two main types: protandry (male to female) and protogyny (female to male).
  • In snails, this adaptation can help balance the population and improve genetic diversity.
  • Understanding these mechanisms can provide insights into the evolutionary strategies of different species.
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