Desert Ecosystem

Q.

What is the xeric condition?

Q.

Cereal crops have fibrous roots and pulses have tap roots. What do you infer from this statement?

1. Cereal crops are monocots and pulses are dicots.

2. Cereal crops can't be uprooted easily as compared to pulses.

3. Cereal crops require less amount of water as compared to pulses.

4. Cereal crops are dicots and pulses are monocots.

Q. Explain how diversity of living organisms helps in enriching any ecosystem.

Q. Which of the following is an adaptive feature of a camel?

1. Gills
2. Hump
3. Webbed feet
4. Sharp claws

Q.

Which of these is not a terrestrial ecosystem?

1. Pond

2. Grassland

3. Desert

4. Mountain

Q. Identify the adaptations of cacti that help them survive in deserts.

1. Spiny leaves
2. Fleshy stem
3. Thick stem
4. Widespread roots
5. Bright flowers
6. Fragrant sap
7. Deep roots
8. Green stem

Q. Which of the following organisms is mainly found in the deserts?

1. Lotus
2. Tadpole
3. Acacia
4. Hydrilla

Q. Which animal is known as "Ship of the desert"?

1. Rat
2. Desert fox
3. Camel
4. Horse

Q. Grassland, forest and _____ are examples of terrestrial ecosystems.

1. pond
2. sea
3. desert
4. river

Q. ________ ecosystem receives average rainfall less than 23 mm per year?

1. Desert
2. Forest
3. Mangrove
4. Grassland

Q. Humps in camels store .

1. protein
2. fat
3. carbohydrate

Q. Nocturnal animals are animals that come out only at .

1. night
2. dawn
3. noon

Q. Which among the following desert animal is adapted to live without drinking water throughout its life?

1. Sand grouse
2. Fennec fox
3. Kangaroo rat
4. Golden mole

Q. Terrestrial biomes are subdivided into grassland, forest, desert and

1. marine
2. tundra
3. freshwater

Q. 'Xeric' condition is _____________.

1. wet and humid
2. dry and arid
3. wet and cold
4. cloudy and humid