,Which of the following structure helps in excretion and respiration in molluscs? (1)Nephridia "(2)Feather-like gills (3)Flame cells (4)Tentacles
Answers
Answered by
1
Answer :
B
Solution :
Feather-like gills
Answered by
0
Answer:
Option 2) Feather-like gills are the correct option. feather-like gills help in excretion and respiration in Mollusca
Explanation:
- Feather-like gills are also known as Ctenidium(singular) or ctenidia.
- Ctenidia is made up of a thick layer of glandular epithelium called the mucus tracts or hypobranchial glands along with the outlets extending to the reproductive, excretory, and digestive system
- They are enclosed in the mantle cavity and mainly used for respiration.
- In some exemplary bivalves such as mussels and oysters, ctenidia are also used in filter-feeding to strain the specific food from the water, after taking the food in, the water is expelled or excreted out. They also increase the space inside the body.
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