Animal Kingdom Question 1005
Question: Nutrition is sponges is
[CPMT 1993]
Options:
A) Extracellular
B) Intracellular
C) First extracellular and then intracellular
D) First intracellular and then extracellular
Show Answer
Answer:
Correct Answer: B
Solution:
In extracellular digestion, digestion occurs outside the cells. The food is broken down into simpler substances in digestive system and the nutrients are absorbed by the cells.
In intracellular digestion, digestion occurs inside the cells.
Sponges do not have a digestive system. The food is directly ingested by them with the help of choanocytes which is then transferred to food vacuoles and broken down into simpler substances.
Hence, nutrition in sponges is intracellular as it is occurring inside the cells. So, the correct answer is ‘Intracellular’.
BETA
