Animal Kingdom Question 679
Question: Which of the following has no segmentation
[CPMT 1981]
Options:
A) Hydra
B) Earthworm
C) Cockroach
D) Centipede
Show Answer
Answer:
Correct Answer: A
Solution:
Copilot The term “segmentation” in biology refers to the division of some animal body plans into a series of repetitive segments. Here’s a brief explanation of the options:
Option A: Hydra - This is the correct answer. Hydra is a genus of small, simple aquatic animals that belong to the phylum Cnidaria and class Hydrozoa. They do not exhibit segmentation.
Option B: Earthworm - Earthworms belong to the phylum Annelida and they are segmented worms. Their bodies are made up of ring-like segments called metameres.
Option C: Cockroach - Cockroaches belong to the phylum Arthropoda. Their bodies are divided into segments and organized into three distinctive body regions: head, thorax, and abdomen.
Option D: Centipede - Centipedes also belong to the phylum Arthropoda. They are characterized by having segmented bodies with one pair of legs per segment.
BETA
