Adaptation

Q.

What is a saprophytic mode of nutrition?

Q.

What is a young bear called?

1. cub

2. pup

3. calf

4. chap

Q.

The small changes that take place in the body of an organism over a short interval of time due to the change in the surroundings which enable the organism to live in its changed surroundings are known as __.

Q.

Why is a pine tree is conical in shape.

Q. Gradual change in the body parts and in the behaviour of an organism in order to adjust to its surroundings is known as

1. migration
2. hibernation
3. adaptation
4. classification

Q. Camouflage helps animals to look like their surroundings.

1. True
2. False

Q. Which adaptation helps the cactus plant to minimise loss of water?

1. Needle like leaves
2. Broad leaves
3. Branched stem
4. Fibrous roots

Q. What is adaptation? Explain.

Q. It gets difficult to breath on reaching the top of a high altitude mountain during a trek. But after some time, you can comfortably breathe. Which of the following phenomena helps the body to adjust with the change in oxygen content in the air?

1. Acclimatisation
2. Adaptation
3. Survival
4. Hibernation

Q. In order to survive, an animal must _____ to its environment.

1. surrender
2. contribute
3. adapt
4. migrate

Q.

Below is a picture of a camel. Name the structures marked 1-5 and give reasons for the modification in them?

Q. Which option is not an adaption of animals living in polar regions?

1. Thin skin with scales
2. Wide and large paws
3. Layer of fat under skin
4. Strong sense of smell

Q. What is adaptation?

Q. Identify X, Y and Z.

Adaptation	Habitat	Example
X	Aquatic	Water Lily
Deep roots	Y	Cactus
Thick fur	Cold region	Z

1. X: Wax coating on leaves, Y: Desert, Z: Yak
2. X: Thick roots, Y: Aquatic, Z: Camel
3. X: Wax coating on leaves, Y: Aquatic, Z: Camel
4. X: Ribbon like leaves, Y: Desert, Z: Yak

Q. Why is it difficult for predators to identify polar bear in the snow?

1. Thick fat layer

2. White fur on the body

3. Coloured fur on the body

4. Very small size

Q. In the following images, the frogs have adapted their body colour to their surroundings. Identify the correct statements about the images.

1. This adaptation is known as camouflage.
2. They have adapted their body colour to absorb more sunlight.
3. They have adapted to conserve energy.
4. They have adapted their body colour to protect themselves from predators.

Q. The animal shown in the picture below is a Polar bear. It is found in the Arctic region. It has very well adapted to the very cold and harsh climates by having two protective layers on its body. What are the two layers?

1. Layer of fur
2. Layer of fat (blubber)
3. Layer of skin
4. Layer of muscles

Q. The following trees are found in a particular regions. What is the purpose of these conical shaped trees?

1. To minimize transpiration
2. To absorb more sunlight
3. To prevent snow accumulation
4. To get more nutrition

Q. Humans can live only on land but a frog can live both on land as well as in water. Substantiate the reason behind the same.

Q.

What is meant by ‘acclimatization’? Explain with the help of an example.

Q. The hump of camel helps in storing

1. Water
2. Grass
3. Urine
4. Fat

Q.

Fishes have a ___ body that helps them to move through the water.

Q. Identify the adaptation that would enable an animal to camouflage in the snow.

1. White fur
2. Thick skin
3. Sharp claws
4. Wide paws

Q.

Characterstics of animals.

Polar region or tropical rainforest.

1) Loud voice

2) Sticky pads on feet .

3) Wide and large paws.

Q. ‘X’ is an animal that lives in a polar region. It has streamlined body, webbed feet and thick layer of fat beneath skin. Identify ‘X’.​

1. Polar bear
2. Penguin
3. Dog
4. Fish

Q. Plants growing on sandy soil are

1. Lithophytes
2. Psammophytes
3. Hydrophytes
4. Xerophytes

Q. Question 10
“A fish dies when taken out of water whereas a wall lizard will die if kept under water.” Mention the term used to describe such abilities that allow fish and lizard to survive in their respective habitats.

Q. This section contains 1 Assertion-Reason type question, which has 4 choices (a), (b), (c) and (d) out of which ONLY ONE is correct.

इस खण्ड में 1 कथन-कारण प्रकार का प्रश्न है, जिसमें 4 विकल्प (a), (b), (c) तथा (d) दिये गये हैं, जिनमें से केवल एक सही है।

A : The animals like cows, buffaloes and tiger are known as ruminants.

A : गाय, भैंस एवं बाघ जैसे जंतु रोमन्थी कहलाते हैं।

R : They quickly ingest, swallow the leafy food and store it in the rumen and chew it later.

R : वे पत्तियों का अंतर्ग्रहण तीव्रता से करके उन्हें निगल लेते हैं और रूमेन में भंडारित कर इसे बाद में चबाते हैं।

1. Both (A) and (R) are true and (R) is the correct explanation of (A)
   
   (A) तथा (R) दोनों सही हैं तथा (R), (A) का सही स्पष्टीकरण है
2. Both (A) and (R) are true but (R) is not the correct explanation of (A)
   
   (A) तथा (R) दोनों सही हैं लेकिन (R), (A) का सही स्पष्टीकरण नहीं है
3. (A) is true but (R) is false
   
   (A) सही है लेकिन (R) गलत है
4. (A) is false but (R) is true
   
   (A) गलत है लेकिन (R) सही है

Q. A physical adaptation that helps an animal to hide from a predator is called _______.

1. habitat
2. camouflage
3. ecosystem
4. predation

Q. Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.
(i) North-East India receives very little rain throughout the year, so we can say that climate in North-East India is hot and dry.
(ii) Thick layer of subcutaneous fat, thick skin and a dense feather cover in polar birds like penguins protect them from severe cold weather.
(iii) Polar animals need to conserve water due to water scarcity.
(iv) As we move higher up from sea level, temperature decreases.

1. (i)T (ii)T (iii)F (iv)T
2. (i)F (ii)F (iii)T (iv)T
3. (i)F (ii)T (iii)F (iv)T
4. (i)F (ii)F (iii)T (iv)F