Question

Which of the following releases the substance glutathione, used to measure the feeding response of Hydra?

• A. Hydra itself
• B. Body of prey
• C. Both A and B
• D. None of the above

Answer 1

Answer: (B)

Body of prey

Hydra is the most primitive organism which have the nervous system and have sensors which can detect the presence of they prey. When the prey moves, this causes the activation of the stinging cells. These cells release mechanosensory discharge called the nematocysts which gets inserted into the prey. The injured prey releases glutathione in the fluid. The glutathione can be detected by the sensors present in the mouth region of Hydra. This detection causes the tentacles to hold the prey and bring it towards the mouth.

So, the correct answer is option B.