11th Biology

Chapter 10 (Kingdom Animalia) F.Sc 1st Year Biology Helping Notes

What is Fasciola (liver-fluke)?

It is an endoparasite in sheep and occasionally in human beings. It has suckers used for attachment to host tissue. It completes its life cycle in two hosts, a snail, sheep or man. It lives in the bile duct of its hosts.

What are most common arthropods, on the earth?

Insects (cockroaches, grasshoppers, butterflies, mosquitoes) are most : common arthropods, on the earth.

Why arthropods are believed to have common origin with annelids?

The arthropods are believed to have common origin with annelids because both have some common characteristics such as segmented body, appendages and cuticle.

What are jointed appendages?

These are the legs found in the members of Phylum Arthropoda which are composed of pieces attached with moveable joints.

What is haemocoel?

The body cavity of arthropods is called haemocoel because blood flows through it

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