Migration

Q.

Question 2

How are cactus adapted to survive in a desert?

Q.

Regarding the assertion and reason, choose the right option.
Assertion [A]: Integrated Pest Management (IPM) is a broad approach for the economic control of pests without polluting nature.
Reason [R]: IPM uses naturally occurring compounds from plants, animals, fungi and bacteria as pesticides.

1. Both A and R are true and R explains A
2. Both A and R are true R does not explain A
3. A is true and R is false
4. Both A and R are false

Q. Match the organisms to their habitat and their adaptation.​

Q.

Migratory birds are mostly aerial.

1. True

2. False

Q. Which of the following may have lifespan ranging from 1 hour to 24 hours?

1. Mayfly
2. Ostrich
3. Giant turtle
4. Cat

Q. A bird that migrate to India during winter is the

1. Common crow
2. Siberian crane
3. Parrot
4. Both (a) and (b)

Q. What is the major reason for a food chain to have limited trophic levels of only $3-4$?

1. Population at each trophic level increases.
2. There is lot of competition for survival.
3. Energy loss at each level.
4. Biomass at each level varies.

Q.

1. To illustrate a possible source of food for large carnivores.
2. To contrast with the habits of the antelope.
3. To suggest the size of antelope herds.
   
4. To describe an aspect of the fauna of South Africa.
   

Q.

Question 2

How are cactus adapted to survive in a desert?

Q. When an animal moves its location as the season changes it is said to be as ______

1. Transportation
2. Movement
3. Locomotion
4. Migration

Q. During the Eleventh Five Year Plan (FYP), agriculture sector in India witnessed a growth rate of 3.3 percent per annum which is higher than 2.4 percent per annum in the previous FYP. This is largely due to better performance of _____________.

1. Crops and Livestock
2. Oilseeds and Fibres
3. Fishing and Oilseeds
4. Fibres and Fishing