Thesocytes serve as
A)Sex cells
B)Slime secreting cells
C)Food reserve
D)Embryonic cells

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Hint: Thesocytes are present in the phylum porifera. The organisms of this phylum are unusual and lack definite organs to carry out metabolic processes. The various types of cells are present which have the ability to transform into different cell types.

Complete answer:
To solve this question, we must know about the cell types present in sponges.

The sponges are primarily made up of four types of cells.
Choanocytes- They are also known as collar cells. They have flagellum which helps in the movement of the cell. The collar helps in capturing food particles.
Archaeocytes- They are also called amoebocytes. They have the ability of amoeboid movement. They have various pigments like carotenoids. They are important for sexual reproduction. They also have thesocytes which function as a food reserve.
Pinacocytes- these cells pinacoderm which surrounds the body. They are flattened cells which contain many granules. They are capable of contracting under unfavourable conditions.
Collencytes-They secrete fibres and form net in the cytoplasm.

The sponges have gemmule which is involved in asexual reproduction. The gemmules are the internal buds which are capable of forming into an adult sponge.

Hence, the correct answer is option (C)

Note: The sponges feed through filter feeding. They pass water through their body through tiny holes called the incurrent pores. The sponges take in tiny particles and bacteria from the water as food.