Solution of Chapter 9. The Living Organisms and their Surroundings (NCERT - Science Exemplar Book)

Which of the following cannot be called a habitat?

Following are some features of plants

(i) They lose a lot of water through transpiration.

(ii) Their leaves are always broad and flat.

(iii) They lose very little water through transpiration.

(iv) Their roots grow very deep into the soil.

Which of the combination of above features are typical of desert plants?

Boojho comes across an animal having a stream-lined and slippery body. What is the habitat of the animal?

Which of the following are characteristics of living beings?

(i) Respiration

(ii) Reproduction

(iii) Adaptation

(iv) Excretion

Choose the correct answer from the options below:

Earthworms breathe through their

Which of the following is not an example of response to stimulus?

Which of the following is correct for respiration in plants?

Which of the following is an incorrect statement about excretion?

Choose the set that represents only the biotic components of a habitat.

Which one of the following is not associated with reproduction?

Choose the odd one out from below with respect to reproduction.

Although organisms die, their kind continues to live on earth. Which characteristic of living organisms makes this possible?

If you happen to go to a desert, what changes do you expect to observe in the urine you excrete? You would

(i) Excrete small amount of urine.

(ii) Excrete large amount of urine.

(iii) Excrete concentrated urine.

(iv) Excrete very dilute urine.

Which of the above would hold true?

Unscramble the given words below to get the correct word using the clues given against them.

Using the following words, write the habitat of each animal given in Fig. 9.1 (a to d).

Grassland, Mountain, Desert, Pond, River

Classify the following habitats into terrestrial and aquatic types.

Grassland, Pond, Ocean, Rice field

Why is reproduction important for organisms?

Fill in the blanks:

(a) Saline water, hot air and sand are ................ components of a habitat.

(b) The habitat of plants and animals that live in ................ is called the aquatic habitat.

(c) ................ enable a plant or an animal to live in its surroundings.

(d) Plants and animals that live on land are said to live in ................ habitats.

Paheli has a rose plant in her garden. How can she increase the number of rose plants in the garden?

Why do desert snakes burrow deep into the sand during the day?

Write the adaptation in aquatic plants due to which

(a) Submerged leaves can bend in the flowing water.

(b) Leaves can float on the surface of water.

Mention one adaptation present in the following animals:

(a) In camels to keep their bodies away from the heat of sand.

(b) In frogs to enable them to swim.

(c) In dolphins and whales to breathe in air when they swim near the surface of water.

Some desert plants have very small leaves whereas some others have only spines. How does this benefit the plants?

What are the specific features present in a deer that helps it to detect the presence of predators like lion?

Read the features of plants given below:

(a) Thick waxy stem

(b) Short roots

(c) Cone shaped plants

(d) Sloping branches

(e) Small or spine-like leaves

(f) Hollow stem

Choose the type of plant for every feature given in a, b, c, d, e and f from the list given below:

Aquatic plant, Desert plant, Mountainous plant

Like many animals although a car also moves it is not considered as a living organism. Give 2-3 reasons.

What are the adaptive features of a lion that helps it in hunting?