EVERYDAY SCIENCE

SCIENCE

ZOOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The body cavity is a haemocoel in.
A
Sponges
B
Star fishes
C
Insects
D
Worms
Explanation: 

Detailed explanation-1: -The haemocoel is the main body cavity of invertebrates, such as insects. Insects do not possess an arrangement of blood vessels such as those in mammals. Instead insects have a cavity that is full of insect blood (known as haemolymph) and the organs of the insect are suspended in this cavity.

Detailed explanation-2: -It is found where the hemolymph circulates. The animals belonging to phylum Arthropoda and Mollusca have haemocoel. The haemocoel can act as a hydrostatic skeleton. It functions as the circulatory system in insects.

Detailed explanation-3: -Arthropod’s primary internal cavity is hemocoel, which accommodates their internal organs and through their haemolymph (analogue of blood), they circulate in their open circulatory system. The body cavity is known as sinus which is divided into the pericardial sinus, perivisceral sinus and perineural sinus.

Detailed explanation-4: -Haemocoel refers to the coelom that is reduced and filled with blood. Phylum Arthropoda: Animals belonging to the phylum arthropods have haemocoel. For example-In cockroaches, visceral organs located in the haemocoel are bathed in blood haemolymph.

Detailed explanation-5: -US hemocoel / (ˈhiːməˌsiːl) / noun. the body cavity of many invertebrates, including arthropods and molluscs, developed from part of the blood system.

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