Question

iii) Find odd man out.
Ostia, Osculum, Tentacles, Collor cells.​

Answer 1

Answer:

Color cell

Explanation:

Answer 2

Tentacles is  the odd one out.

Explanation:

• Ostia- Sponges have multiple pores called ostia which allows water to enter in and out of the sponge.
• Ostia are formed by porocytes : tube-shaped cells that acting as valves to regulate flow of water.
• Osculum - water and nutrients  in sponges leave through a hole called osculum .
• Tentacles-  are one of the long thin and soft part resembling legs, found in hydra or other sea animals .
• collor cells-  they are special flagellated cells in the inner lining of the body of sponges (choanoderm) , they help in nutrition , respiration , circulation , excretion etc.