DAV Class 4 Science Solution Chapter 6 Insects
DAV School Books Class 4 Science Solution Chapter 6 Insects all Question Answer. DAV Class 4 6th Chapter Insects full Chapter explanation by expert teacher.
DAV School Books Class 4 Science Solution Chapter 6 Insects:
A.)
1.) Fresh
2.) Nectar
3.) Combs
4.) Anopheles mosquito
5.)Cocoon
6.) Wasp
B.)
1.) True
2.)True
3.) False
4.) False
5.) False
C.)
1.) c (housefly )
2.) b (nectar )
3.) b (back )
4.) b (lady bird beetle)
D.)
1.) When insects like butterfly, honeybees and bumblebees sit on flowers, pollen grains stick to their legs or wings and get transferred to another place. This process of shifting of pollen grains from one place to another is called pollination.
2.) Honeybees suck nectar from flowers and carry it to the hive where they live. A beehive consists of many six-sided chambers called combs. Honeybees store the nectar in these combs.
3.) Silk moths gives us silk. It does feed on mulberry leaves.
4.) Diseases like diarrhea, cholera and jaundice get spread by houseflies.
E.)
1.) The silk moth secretes a liquid which changes into a fine thread. The moth weaves a cover is called a cocoon. These cocoons are collected and silk thread is obtained from them.
2.) Honey is collected from a beehive by lighting a fire under it. The heat and smoke drives the bees out of the hive. The honey collectors then remove the hive and collect the honey stored in it.
3.) Lac insect which usually grow on banyan tree. They secrete a semi-solid substance called lac. Lac is used in paints, varnishes, printing ink and for making bangles and similar things.
4.) When houseflies sit on garbage or animal excreta, they gather germs. They carry the disease causing germs on their feet and bodies. When these flies sit on any food item the germs are passed on to the food. These disease causing germs get transmitted to the human when they consume such infected food or water. This is how houseflies spread diseases. Disease like diarrhea, cholera and jaundice get spread by the houseflies.
5.) We can get rid of harmful insects by using natural methods, or buy using chemicals, called insecticides or pesticides. We often keep dried neem leaves in clothes or apply neem or kerosene oil on wooden furniture. This helps to save them from harmful insects. Farmers sometimes use pesticides for saving their crops.
For more updates, follow our page ⇒ Net Explanations
Odia solution
Hindi solution