Question : Which of the following cells line the spongocoel and canals in members of the phylum Porifera?
Option 1: Somatic cells
Option 2: Collar cells
Option 3: White cells
Option 4: Sex cells
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Correct Answer: Collar cells
Solution : The correct answer is Collar cells .
Choanocytes, also called collar cells, are special cells that cover the inside of the central cavity (spongocoel) and canals in sponges. These cells have tiny, hair-like structures called flagella. The flagella move in a coordinated way to create a flow of water that goes in one direction, towards the opening at the top called the osculum. This flow helps the sponge filter and collect nutrients from the water, kind of like a natural water pump for the sponge.
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Question : Which of the following cells are found in the liver of mammals?
Question : Which one of the following substances is normally found in urine?
Question : Which of the following is a phylum of animals found in freshwater ponds, lakes, and swamps that provides setae, or parapodia for locomotion?
Question : Which of the following blood cells is compulsory for blood coagulation ?
Question : Which cells, also called neurilemma cells, are the main glial cells in the Peripheral Nervous system(PNS) and play an essential role in the survival and functions of neurons?
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