Question

8. Bio-pesticides are biodegradable in nature.
9. Crops can be destroyed by grazing animals.
10. Wheat crops need a lot of water for growth.
Q4. Give one word for the following:
1. Sense organ that helps us to speak
2. The cells that form the nerves
3. It is also called as rotary joint
4. The ribs that are not attached to the stemum
6. An animal that has fur
7. The inner ear has the eard
5. Number of bones in an adult human​

Answer 1

1. Botanical pesticides are generally highly biodegradable , and they become inactive within hours or a few days and can easily be broken down by stomach acids in mammals, so toxicity to humans and animals is very low to non-target organisms and are ecofriendly.
2. Through hoof action, pawing, and wallowing, grazing animals trample plants, break up soil surfaces, incorporate seed into the soil, and compact soils. Grazing animals contribute to nutrient cycling by depositing nitrogen-rich urine and dung, and their carcasses can provide an important contribution to the food web.
3. Some types of plants don't need water to grow. Wheat is a prime example. It can grow without water, but it will grow much faster if you keep it watered. If your soil is left untended for too long and you put no plants in the ground, it will turn back into dirt after a while.