Level: F.Sc (Pre-Engg)
Class: 1st Year
Board: Punjab Textbook Board
Chapter 10: Kingdom Animalia
Type: Short Questions
Author: Kiran Mehtab
PDF Size: 2 MB
How insects damage fruits and crops?
The larvae of the insects damage fruits and the crops resulting in economy loss to farmers. The locusts that move in large numbers front country to country cause damage to standing crops etc.
How insects are beneficial to man? or Give beneficial effects of insects. or Write note on useful insects.
The useful insects are the Honey Bee that provides man with honey and also wax. The silk worm gives us silk from which cloth is made There are some insects that are predaceous on other harmful insects. Some insects are Scavengers and they eat up dead animal and vegetable matter. Insect larva are source of food for fish.
What is radula? or What do you know about Radula?
In the mouth cavity of many molluscs there is a rasping tongue-like radula provided with many horny teeth.
Name classes of Phylum Mollusca.
Gastropoda, Bivalvia (Pelecypoda) and Cephalopoda are classes of Phylum Mollusca.