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Q17.Which of the following animals is bisexual or hermaphrodite? (a) Earth worm (b) Starfish (c) Garden snail (d) All of these |
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Answer» tion:Bisexual ANIMALS, also called as hermaphrodites are the organisms having reproductive organs normally associated with both male and female sexes. Many invertebrates and a significantly smaller number of vertebrates are hermaphrodites. Examples of Hermaphrodites are : Snails:- Most snails are hermaphrodites. The only exceptions include certain freshwater and marine species, such as apple snails and periwinkle snails.Echinoderms:- Echinoderms are marine invertebrates. They include sea stars, sea cucumbers, sea urchins and sand dollars. Some of the most well-known echinoderms are also hermaphrodites.Worms:- ANOTHER CLASS of invertebrates, worms, adds to the proliferation of hermaphroditism. Some worms can fertilize themselves, but for the most part, worms need a MATE to reproduce.Fishes:- Around 21 FAMILIES of fish are natural hermaphrodites. These unique hermaphroditic vertebrates include snook, clown fish, wrasse, angelfish, grouper, goby, parrot fish, sea bass, starfish and anthias. |
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