Part - 2 Living Things
Unit - 3 Insects (Solved Exercise)
Excercise (Solved)
Q.1: Explain one difference between the honey bee and the locust.
Ans: The honey bee is an insect and helps to pollinate flowers. The locust is a pest and destroys plants and crops.
Q.2: What is the difference between an insect and a bird?
Ans: The insects have three pairs of legs. Birds have a single pair of legs. Insects do not have bones. Birds have bones that help
them to fly.
Q.3: The human body is supported and protected by the skeleton. what protects and supports an insect's body?
Ans: The insect's body is supported and protected by a hard covering called chitin.
Q.4 Fill in the blanks using words given below.
wings, colony, chitin, kinds, disease, bones, locusts
a). Species of insects means kinds of insects.
b). Most insects have wings attached to them that help them to fly.
c). A colony is a large group of insects living together.
d). Insects such as locusts can destroy crops.
e). Flies and mosquitoes can cause diseases.
d). Insects do not have bones but are covered and supported by chitin.
e). Spiders and Scorpions are not insects. That is because they have two parts to their body. wings, colony, chitin, kinds, disease, bones, locusts
a). Species of insects means kinds of insects.
b). Most insects have wings attached to them that help them to fly.
c). A colony is a large group of insects living together.
d). Insects such as locusts can destroy crops.
e). Flies and mosquitoes can cause diseases.
d). Insects do not have bones but are covered and supported by chitin.
f). Some insects are called social insects as they live together in groups called colonies.
g). Spiders and Scorpions have eight legs and do not have antennae and wings.
h). All adult insects have three parts to their bodies.
i). Birds and bats fly too, but they are not insects.
in a _colony_ there can be hundreds or even thousands of insects. Some insects are called _pests_.(The life cycle of an insect begins with _an egg_. Which then hatches into a _larva_. As it grows bigger , its exoskeleton cracks open,and the adult insect crawls out. Honeybees and ants are _social_ insects. Most insects have two large _eyes_. Around your house and in your garden there are hundreds of different kinds of _insects_. There are more than one million different kinds (_species_) of insects in the world.
Circuits
Q.5: Make a fact file on insects?
ans page 18
Q.4: For how long cockroach can live without food?
Ans: A cockroach can live almost a month without food.
Q.5: How grasshopper makes a sharp high noise?
Ans: A cockroach can live almost a month without food.
Q.5: How grasshopper makes a sharp high noise?
Ans: Grasshoppers make a sharp high noise by using its back legs or wings.
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