Q. Which of the following is/are the correct about Sea cucumbers?
1.Sea cucumbers can breed sexually or asexually.
2.All Sea cucumbers are benthic, meaning they live on the ocean floor.
3.Sea cucumbers are essential for the survival of the coral reefs.
Select the correct answer from the codes given below;

[A] .1 and 2 only

[B] 2 and 3 only

[C] .1 and 3 only

[D] 1, 2 and 3

Answer: C
Notes:

Statement 1 and 3 are correct: Sea cucumbers are found in virtually all marine environments throughout the world, from shallow to deep-sea environments. They can breed sexually or asexually.

Sea Cucumbers are an integral part of the coral ecosystem as one of the main by-products of the sea cucumbers digestion of sand is calcium carbonate and this is essential for the survival of the coral reefs. They act like garbage collectors of the ocean world, and they recycle nutrients, thus playing an important role in keeping coral reefs in good condition.

Statement 2 is incorrect: Sea cucumbers are benthic, meaning they live on the ocean floor. However, their larvae are planktonic, meaning they float in the ocean with the currents.

Source: DTE