Question

Single circulation i.e., blood flows through the heart only once

during one cycle of passage through the body, is exhibited by



(a) Labeo, Chameleon, Salamander


(b) Hippocampus, Exocoetus, Anabas


(c) Hyla, Rana, Draco


(d) Whale, Dolphin, Turtle

Answer 1

Answer:

b)Hippocampus,exocoetus,anabas

Answer 2

Answer:

(b)

Explanation:

n the single circulatory system, the blood passes the heart only once during the circulation. Single circulation systems consist of blood, blood vessels and a heart which receives DE-oxygenated blood from the atrium and pumps it through the ventricle so that it continues onward to the gills.

The DE-oxygenated blood is oxygenated as it passes through the gill capillaries which are tiny blood vessels whose walls are so thin that the waste product carbon dioxide can be released from the DE-oxygenated blood and oxygen accepted into the blood before the blood moves inwards through the blood vessels throughout the rest of the animal's body.

So, the correct answer is option B.