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Question
In most simple type of canal system of Porifera, which of the following ways exhibit water flow?
In most simple type of canal system of Porifera, which of the following ways exhibit water flow?
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Solution
The correct option is A Ostia ⟶ Spongocoel ⟶ Osculum ⟶ Exterior
The central body cavity of sponges is called spongocoel. Their body is
porous. The inhalent pores are called ostia and exhalent pores are known
as oscula. The body of a sponge is organised in such a manner as to
form a complex system of pores and canals. This system is called canal
system. Water flows In through ostia to spongocoel and comes out to
exterior via osculum. The continuous water current flowing through the
canal system is very important for the life of a sponge. It brings in
food and oxygen and canes away carbon dioxide, nitrogenous wastes and
reproductive bodies. Thus, the canal system helps the sponge in
nutrition, respiration, excretion and reproduction. So, the correct answer is 'Ostia ⟶ Spongocoel ⟶ Osculum ⟶ Exterior'.
The central body cavity of sponges is called spongocoel. Their body is
porous. The inhalent pores are called ostia and exhalent pores are known
as oscula. The body of a sponge is organised in such a manner as to
form a complex system of pores and canals. This system is called canal
system. Water flows In through ostia to spongocoel and comes out to
exterior via osculum. The continuous water current flowing through the
canal system is very important for the life of a sponge. It brings in
food and oxygen and canes away carbon dioxide, nitrogenous wastes and
reproductive bodies. Thus, the canal system helps the sponge in
nutrition, respiration, excretion and reproduction. So, the correct answer is 'Ostia ⟶ Spongocoel ⟶ Osculum ⟶ Exterior'.
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