Question

What is the major damage caused by the weevils?
A. Damaging seed
B. Destroying kernel
C. Biting tender leaves
D. Death of sprout

Answer 1

Hint: Insects are the largest group of the phylum Arthropoda. Insects cause damage to crops by feeding on leaves and stems of the crops directly. This results in the loss of a crop yield to the farmer. Those insects which cause damage and are harmful to crops are called pests. Ploughing and cultivation of the soil before sowing reduces the pest burden.

Complete answer:
The major damage caused by weevils is the death of sprouts.
The weevil chews the sprouts and damages the crops.
Weevils are beetles belonging to the superfamily curculionidae.
They are herbivorous in nature. Many weevils are considered pests because of their ability to damage and destroy the crops.
There are about 97,000 species of weevil which attack and damage different plants.
The mouthpart present in this insect is of chewing type. They have rostrum or elongated snouts for chewing purposes.
The snouts are often used to excavate tunnels or burrow in grains.
The Wheat and Maize weevil damage and destroy the stored grains.
Cotton weevil lay eggs inside the cotton bolls and the larvae feed on these cotton bolls thus destroying the cotton crop.

Note:
Weevils are used for biological control of invasive plants. Biological control also known as biocontrol is a method to eradicate pests by introducing other insects which feed on them.
Damages caused by insects or pests are related to the type of mouthpart present in them.
To avoid insect attack, farmers use several techniques : insecticides, pesticides or the biological control method to eradicate harmful pests.