Desert Habitat

Q.

Describe the adaptive features of camel.

Q. Xerophytes are plants which are found in ______.

1. marshes
2. ponds
3. seas
4. deserts

Q.

Summer sleep is called aestivation.

1. True
2. False

Q.

Define the term-

Xerophytes

Q.

The stem is green and fleshy in cactus. Give reason.

Q.

What adaptations do animals show with their food habits?

Q.

Plants growing in hot and dry places are called _______.

Q.

Which of the following plants is not adapted to grow in the desert habitat?

1. Cactus

2. Hydrilla

3. Agave

4. Acacia

Q. Why is adaptation necessary?

1. To get protected from predators.
2. To produce progeny.
3. To increase competition for food.
4. To survive unfavourable conditions.

Q. Which of the following statements is/are correct?

Statement 1: The leaves in a cactus are modified into spines.

Statement 2: Thick waxy stem and spines reduces water loss through transpiration in a cactus.

1. 
   Statement 1: True;
   Statement 2: False
2. 
   Statement 1: True;
   Statement 2: True
3. ​​​​​​
   Statement 1: False;
   Statement 2: True
4. 
   Statement 1: False;
   Statement 2: False

Q. What is adaptation? Explain physiological adaptation taking an example of altitude illness.

Q. Which one of the following animals can live from birth to death without even drinking water?

1. Kangaroo rat
2. Kangaroo
3. Desert cat
4. Camel

Q. Cactus is adapted to grow in _______.

1. forests
2. oceans
3. deserts
4. mountains

Q. Match the parts of a camel to its function.

1. Protection from sand
2. Stores fat
3. Easy to walk on sand

Q. The plants which grow on land but need very less amount of water are called as

1. Xerophytes
2. Pteridophytes
3. Hydrophytes
4. Mesophytes

Q.

Which of the following adaptations help the plants to prevent loss of water during winter?

1. Having more leaves

2. Having broad leaves

3. Having thicker leaves

4. Shedding leaves

Q.

Define the term

1. Succulents

Q. Why can deciduous trees stay in winter without making food

Q. Kangaroo and desert rat that live in conditions of water scarcity are capable of meeting all their water requirements by

1. Oxidizing stored fat to produce water as by product
2. Having a thick coat to minimize evaporation desiccation
3. Producing very concentrated urine and soloed farces
4. All of the above
   

Q.

Plants which live in dry climatic conditions are called

1. Mesophytes

2. Xerophytes

3. Hydrophytes

4. Arboreal

Q. Which of the following types of ecosystem is expected in an area where evaporation exceeds precipitation, and mean annual rainfall is below $100$mm?

1. Grassland
2. Shrubby forest
3. Desert
4. Mangrove

Q. Which of the following statements is/are correct?

Statement 1: The leaves in a cactus are modified into spines.

Statement 2: Thick waxy stem and spines reduces water loss through transpiration in a cactus.

1. 
   Statement 1: True;
   Statement 2: False
2. 
   Statement 1: True;
   Statement 2: True
3. ​​​​​​
   Statement 1: False;
   Statement 2: True
4. 
   Statement 1: False;
   Statement 2: False

Q. In ecological sense desert animals are termed as

1. Arboreal
2. Benthos
3. Cursorial
4. Xeric

Q.

Some animals are adapted to survive in the hot and dry deserts. Which of these is correct regarding the animal found in deserts and kind of adaptations?

1. Snakes with a thick layer of fat under its skin.

2. Rats with long hair.

3. Goats with strong hooves.

4. Camels with a hump which stores fat.

Q. Which of the following is not a reptile?

1. Pigeon
2. Crocodile
3. Lizard
4. Snake

Q. When the conditions are dry, a grass leaf curls inward to minimize water loss due to presence of

1. Bulliform cells
2. Large xylem cavities
3. Parallel venation
4. Thich cuticle

Q. Succulents grow in

1. Tropical rain forest
2. Temperate deciduous forests
3. Tundra
4. Desert

Q. Which body part of camel shrinks and retains its size depending on consumption of food ?

1. Rough tongue
2. Long eyelashes
3. Hump
4. Neck

Q.

In which type of habitat would you most likely find xerophytes?

1. Forest

2. Marsh

3. Desert

4. Tundra

Q. Most animals of desert are

1. Arboreal
2. Fossorial
3. Crepuscular
4. Nocturnal