EVERYDAY SCIENCE

SCIENCE

ZOOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Nematocysts (stinging cells) are used for ____
A
Defense
B
Catch organisms for food
C
Both of these
D
None of the above
Explanation: 

Detailed explanation-1: -Nematocysts or cnidocysts represent the common feature of all cnidarians. They are large organelles produced from the Golgi apparatus as a secretory product within a specialized cell, the nematocyte or cnidocyte. Nematocysts are predominantly used for prey capture and defense, but also for locomotion.

Detailed explanation-2: -There are two main locations of nematocysts in organisms. Nematocyst cells may be found throughout the mouth and tentacles, and they are employed to immobilize prey by releasing venom. They have coiled threads that may contain barbs. On the body’s surface, there are numerous such capsules.

Detailed explanation-3: -Nematocysts are used by organisms for prey capture and feeding, but also for defense, transport, digestion and other various functions [3, 4].

Detailed explanation-4: -Animals from the phylum Cnidaria have stinging cells called cnidocytes. Cnidocytes contain large organelles called (a) nematocysts that store a coiled thread and barb.

There is 1 question to complete.