[ Question Bank ] - 2022 — Science STD 10 — Question

Write short note: Disaster Management Authority.

What is natural resource? Why is it precious?

Some hunters are roaming in the plush green forest of Africa. They spot a deer and kill it. They decide to roast the deer there and then and eat it. When the hunters had just finished enjoying the feast of roasted deer, a lion attacks them. The lion kills one of the hunters and eats his flesh.

1. Write a food chain which provides food to lion in this case.
2. Which animal (other than deer) the lion could look for food if he did not get the hunter as prey?
3. Which other animal in the forest could have been in place of lion?
4. How does the above food chain differ form the food chain such as: plants → goat → man?

There were lot of organisms A in the crop fields in an area. These organisms used to feed on organisms B also present in the crop fields but which damaged the standing crops. One day some people arrived in the fields and killed all the organisms A so that they could remove their C for making fancy items which were in great demand. Due to large scale killing of A, the population of B increased too much damaging all the crops in the area and causing a famine-like situation. Apart from A, there is another organism D which can also kill and eat B. Name A, B, C and D.

What challenges did Mendeleev face in following periodic law?

Write short notes: Position of isotopes in the Mendeleev’s and the modern periodic table.

Draw a neat diagram of the structure of chromosome and label the parts:
(a) Centromere (b) p-arm

Following are the pictures of some disasters. How will be your pre and post-disaster management in case you face any of those disasters?

Different problems occurs with disasters. In the concept map different effects are mentioned. Read it and fill the blank places.

Write the names of five endocrine glands found in the human body. Name the hormones secreted by each gland.