EVERYDAY SCIENCE

SCIENCE

ZOOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cells of a cnidarian that are responsible for stinging
A
cnidocytes
B
polyp
C
hydrozoans
D
choanocytes
Explanation: 

Detailed explanation-1: -Cnidocytes, also known as stinging cells, are specialized neural cells that typify the phylum Cnidaria (sea anemones, corals, hydroids, and jellyfish) [1, 2, 3]. These cells contain an organelle called cnida or cnidocyst, which is the product of extensive Golgi secretions.

Detailed explanation-2: -Cnidarians, including jellyfish and sea anemones, both detect and capture prey using stinging cells called nematocytes which fire a venom-covered barb via an unknown triggering mechanism.

Detailed explanation-3: -Coelenterates carry specialized living stinging cells called cnidocytes that encapsulate intracytoplasmic stinging organelles called cnidae, which include nematocysts. Mild envenomation, typically inflicted by fire coral, hydroids, and anemones, produces skin irritation.

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.

Detailed explanation-5: -Cnidocytes (’stinging cells’) are specialized cells that define the phylum Cnidaria (sea anemones, jellyfish, corals and hydras). They contain an “explosive” organelle called cnidocyst that acts as a 600 million-years-old microscopic injection system and is important for prey capture and anti-predator defense.

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