EVERYDAY SCIENCE

SCIENCE

ZOOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The earthworm reproductive structure that generates mucus and gives rise to the cocoon is the:
A
Coccyx
B
Pygidium
C
Peristromium
D
Clitellum
Explanation: 

Detailed explanation-1: -The clitellum is a reproductive structure that generates mucus that aids in sperm transfer and gives rise to a cocoon within which fertilization occurs; it appears as a fused band in the anterior third of the animal (Figure 1).

Detailed explanation-2: -earthworms. … 32 and 37 is the clitellum, a slightly bulged, discoloured organ that produces a cocoon for enclosing the earthworm’s eggs. The body is tapered at both ends, with the tail end the blunter of the two.

Detailed explanation-3: -A clitellum is a modification of the epidermis, which develops as an easily visible, glandular girdle partly behind the female pores; it secretes a cocoon in which eggs are laid.

Detailed explanation-4: -The clitellum is a thick, saddle-like ring found in the epidermis (skin) of the worm, usually with a light-colored pigment. To form a cocoon for its eggs, the clitellum secretes a viscous fluid. This organ is used in sexual reproduction of some annelids, such as leeches.

Detailed explanation-5: -The segments 14-16 are covered by a prominent dark band of glandular tissue called clitellum.

There is 1 question to complete.