RBSE Class 6 Science Chapter 2 Question Answer Diversity in the Living World

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Diversity in the Living World Class 6 Questions and Answers

RBSE Class 6 Science Chapter 2 Diversity in the Living World Question Answer

Diversity in the Living World Class 6 Question Answer – Exercise

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Question 1.
Here are two types of seeds. What differences do you find among the roots and leaf venation of their plants?

Answer:
Wheat is a monocot plants that have parallel venation and a fibrous root system whereas kidney beans is a dicot plant with taproots and reticulate venation in leaves.

Question 2.
Names of some animals are given below. Group them based on their habitats. Write the names of aquatic animals in the area marked ‘A’ and terrestrial animals in the area marked ‘B’. Enter the names of animals living in both habitats in part ‘C’.

Horse, Dolphin, Frog, Sheep, Crocodile, Squirrel, Whale, Earthworm, Pigeon, Tortoise
Answer:
Animals in Group A – 1. Dolphin, 2. Whale.
Animals in Group B – 1. Horse, 2. Sheep, 3. Squirrel, 4. Earthworm, 5. Pigeon.
Animals in Group C – 1. Frog, 2. Crocodile, 3. Tortoise.

Question 3.
Manu’s mother maintains a kitchen garden. One day, she was digging out radish from the soil. She told Manu that radish is a kind of root. Examine a radish and write what type of root it is. What type of venation would you observe in the leaves of radish plant?
Answer:
Radish is a taproots type of root. We observe reticulate venation in the leaves of radish plant.

Question 4.
Look at the image of a mountain goat and a goat found in the plains. Point out the similarities and differences between them. What are the reasons for these differences?

Answer:
Similarities between mountain goat and a goat found in the plains—
1. Both hav e hair on the body.
2. Both have hoofed feet for walking.
Differences—

Mountain Goat	Goat found on Plains
(i) Long, thick hair is present on the body.	(i) Short hair is present on the body.
(ii) Their ears are small.	(ii) They have long ears.
(iii) Their hoofs are strong and due to this they can walk easily on rocky paths.	(iii) Their hoofs are comparatively less strong.

Due to these differences in the mountain goat and goat found on the plains, their habitats are different.

Question 5.
Group the following animals into two groups based on any feature other than those discussed in the chapter—cow, cockroach, pigeon, bat, tortoise, whale, fish, grasshopper, lizard.
Answer:
(1) Non-flying animals—Cow. Whale, Tortoise. Fish. Lizard.
(2) Flying animals—Cockroach, Pigeon. Bat.

Question 6.
As the population grows and people want more comfortable lives, forests are being cut down to meet various needs. How can this affect our surroundings? How do you think we can address this challenge?
Answer:
Due to the increase in population and the desire of humans to live a more comfortable life, forests are being cut down to fulfill various needs, due to which pollution is increasing in the environment around us. Along with this, the habitat, food and other resources of wild animals are decreasing. The ill-effects of all this are appearing in the form of a decrease in biodiversity.

We can solve this challenge with simple efforts—

1. Efforts should be made to keep the population growth within limits by effective control methods.
2. Forest wealth should be used judiciously.
3. Efforts should be made to preserve forests like sacred groves with community participation.
4. At places where forests existed earlier, efforts should be made to re-establish forests through reforestation.

Question 7.
Analyse the flowchart. What can be examples of ‘A’ and ‘B’?

Answer:
‘A’ shows the characteristics of a dicotyledonous plant, examples of which are— gram, kidney beans, radish, sadabahar, mango, etc.

‘B’ shows the characteristics of a monocotyledonous plant, examples of which are wheat, maize, rice, millet, lemongrass, etc.

Question 8.
Raj argues with his friend Sanjay that “Gudhal (hibiscus) plant is a shrub”. What questions can Sanjay ask for clarification?
Answer:
‘Hibiscus plant is a bush.’ Sanjay can ask the following questions to clarify this—

1. Is the hibiscus plant shorter than me or of the same height as me or taller than me?
2. Is the colour of the stem of the hibiscus brown or green?
3. Can the stem of the hibiscus be bent easily or is it stiff?
4. Do the branches of the hibiscus plant grow near the ground or from the upper part of the stem?

Question 9.
Based on the information in the table, find out examples of these plants for each group.

(a) What other similarity do plants of group A have?
(b) What other similarity do plants of group B have?
Answer:
Examples of group A—mango, gram, kidney beans, radish,
Examples of group B—wheat, rice, maize, millet, grass.
(a) Reticulate venation is found in plants of group A.
(b) Parallel venation is found in plants of group B.

Question 10.
Observe the labelled part of a duck in the picture given below. What differences do you observe in the feet of the duck compared to the other birds? Which activity would the duck be able to perform using this part?

Answer:
Ducks have more webbed feet than other birds. These webbed feet act like a rudder and help the duck to swim in water.

RBSE Class 6 Science Chapter 2 Important Questions

Multiple Choice Questions

1. Biodiversity includes—
(a) Plants
(b) Animals
(c) Plants and animals
(d) None of these
Answer:
(c) Plants and animals

2. An example of shrub is—
(a) Mango
(b) Rose
(c) Tomato
(d) Gram (chickpea)
Answer:
(b) Rose

3. Parallel venation is absent in—
(a) Hibiscus leaf
(b) Banana leaf
(c) Grass leaf
(d) Wheat leaf
Answer:
(a) Hibiscus leaf

4. Taproot is found in—
(a) Chickpea
(b) Wheat
(c) Maize
(d) Rice
Answer:
(a) Chickpea

5. The characteristic of monocot plant is—
(a) Two cotyledons
(b) Reticulate venation
(c) Tap root
(d) Fibrous root
Answer:
(d) Fibrous root

6. Frog is a—
(a) aquatic animal
(b) terrestrial animal
(c) amphibian animal
(d) None of these
Answer:
(c) amphibian animal

7. The plants that creep along the ground while growing are called—
(a) Herbs
(b) creepers
(c) climbers
(d) shrubs
Answer:
(b) creepers

8. The mustard plant is characterised by—
(a) Reticulate venation and fibrous root
(b) Parallel venation and tap root
(c) Parallel venation and fibrous root
(d) Reticulation venation and tap root
Answer:
(d) Reticulation venation and tap root

9. An example of dicot plant is—
(a) Jovvar
(b) Banana
(c) Kidney beans
(d) Maize
Answer:
(c) Kidney beans

10. The characteristic of animals that move on water is—
(a) Streamlined body
(b) Fins
(c) Membraned pairs
(d) All of the above
Answer:
(d) All of the above

Fill in the blanks

1. The damage to habitat lads to the loss of …………….. .
Answer:
biodiversity

2. The place where plants and animals live is their …………….. .
Answer:
habitat

3. The pattern of veins on the leaf is called …………….. .
Answer:
venation

4. The leaves of banana and grasses exhibit …………….. venation.
Answer:
parallel

5. The fleshy stems of plants found in the desert can store …………….. .
Answer:
water

6. Camels store food in their …………….. .
Answer:
humps

True/False

1. Habitat plays an important role in shaping the biodiversity of a region. (True/False)
Answer:
True

2. Plants that have green and tender stem are called shrubs. (True/False)
Answer:
False

3. The height and legs of camels in a cold desert are comparatively shorter than those found in a hot desert. (True/False)
Answer:
True

4. Rhododendrons are of shorter height and have longer leaves to survive through the heavy winds on mountain tops. (True/False)
Answer:
False

Match the words given in Column-I with Column-II

Question 1.

Column-I	Column-II
1. Creeper	(a) Mango
2. Herb	(b) Rose
3. Shrub	(c) Grape
4. Tree	(d) Tomato

Answer:

Column-I	Column-II
1. Creeper	(c) Grape
2. Herb	(d) Tomato
3. Shrub	(b) Rose
4. Tree	(a) Mango

Question 2.

Column-I	Column-II
1. Hump	(a) Goat
2. Fins	(b) Camel
3. Webbed feet	(c) Fish
4. Hoofed legs	(d) Duck

Answer:

Column-I	Column-II
1. Hump	(b) Camel
2. Fins	(c) Fish
3. Webbed feet	(d) Duck
4. Hoofed legs	(a) Goat

Very Short Answer Type Questions

Question 1.
What is biodiversity?
Answer:
The variety of plants and animals found in a particular region contributes to the biodiversity of that region.

Question 2.
What is the importance of grouping plants and animals?
Answer:
By grouping, it becomes easy to understand and study plants and animals on the basis of their similarities and differences.

Question 3.
What is a climber?
Answer:
Plants whose stems are weak and need support to climb up and grow are called climbers.

Question 4.
What are ‘veins’?
Answer:
The thin lines found on the leaves of plants are called veins.

Question 5.
What do you understand by ‘taproot’?
Answer:
In plants the type of root that consist of one main root and small side roots arising from it. The main root is called taproot.

Question 6.
What are the characteristics of deodar trees found in the mountain regions?
Answer:
Deodar trees are conical in shape and have flexible and sloping branches.

Question 7.
What is ‘adaptation’?
Answer:
The special features that enable plants and animals to survive in a particular region are called adaptations.

Question 8.
What are amphibian animals?
Answer:
Some animals, such as frogs, can live in water as well as on land. These are called amphibians.

Question 9.
What can we do to keep our planet full of life?
Answer:
We must protect biodiversity to ensure our planet is full of life, helping plants and animals to survive and thrive.

Question 10.
What is called ‘grouping’?
Answer:
The method of arranging plants and animals into groups based on their common features is called grouping.

Question 11.
What is the objective of ‘nature walk’?
Answer:
The objective of nature walk is to experience the beauty and variety of plants and animals in the nature.

Question 12.
What are creepers?
Answer:
Some plants creep along the ground and are called creepers.

Question 13.
Who was Janaki Ammal?
Answer:
Janaki Ammal was an Indian botanist who played a key role in the ‘Save Silent Valley’ movement.

Question 14.
Who was known as the ‘Birdman of India’?
Answer:
Salim Ali was known as the ‘Birdman of India’.

Question 15.
What features do fish have to move in water?
Answer:
Fish has streamlined body and fins to move in water.

Question 16.
What is the speciality of the stem of cactus plant found in the desert of Rajasthan?
Answer:
Cactus plant found in the desert of Rajasthan have thick and fleshy stems so that they can store water in them.

Question 17.
What do you understand by ‘Project Tiger’?
Answer:
‘Project Tiger’ was initiated in 1973 to protect the declining population of the Bengal Tiger.

Question 18.
When was ‘Cheetah Reintroduction Project’ initiated?
Answer:
The ‘Cheetah Reintroduction Project’ was initiated in 2022 to restore the population of the Cheetah.

Question 19.
Which areas have been declared as Protected area for the Great Indian Bustards?
Answer:
Habitats of the Great Indian Bustards have been declared as Protected areas in the states of Gujarat, Rajasthan and Maharashtra.

Short Answer Type Questions

Question 1.
Name the different types of characteristics found in plants which are useful in grouping them.
Answer:
Plants have different types of characteristics, like—

1. tall/short, hard/soft stem
2. different shapes of leaves and their arrangement on the stem or branches
3. flowers varying in colour, shape, and scent

Question 2.
Which plants are called ‘trees’? Give an example.
Answer:
Some plants grow really tall and have hard, thick, brown, and woody stems. Their branches typically start higher up on the stem and away from the ground. These plants are called trees. For example, a mango tree.

Question 3.
Differentiate between climbers and creepers.
Answer:
Some plants with weak stems need support to climb and grow, and are called climbers. Some plants creep along the ground and are called creepers.

Question 4.
What do you understand by ‘ reticulate venation’? Give an example.
Answer:
In some leaves, you can observe a net-like pattern of veins on both sides of a thick middle vein. This pattern is called reticulate venation. For example, leaves of hibiscus exhibit reticulate venation.

Question 5.
Is there any relation between the type of seed, the type of leaf venation and the type of root of the same plant? Explain.
Answer:
There is a relation between the type of seed, the type of leaf venation and the type of root of the same plant. Like – Dicot plants have reticulate venation and a taproot system while monocot plants have parallel venation and a fibrous root system.

Question 6.
What types of movements are shown by different animals? How are animals able to perform these movements?
Answer:
Different animals have different types of movement. Animals can fly, run, crawl, walk, hop or jump, and so on. These animals use different body parts for moving from one place to another. They may use wings, legs, and other parts that help them to move.

Question 7.
Does the movement of animals depend upon their surroundings? Explain by giving an example.
Answer:
Let us consider fish and goats as examples to understand the effect of surroundings on the movement of animals. Fish live in water. They have streamlined bodies and fins for movement in water whereas Goats live in grassy areas and move with the help of legs. Both animals are different in their sizes and shapes. In this way the movement of animals depend upon their surroundings.

Question 8.
Which characteristics helps camel to survive in deserts?
Answer:
The characteristics that helps camel to survive in deserts are—

1. The long legs and wide hooves help these camels to walk on the sandy desert without sinking into the sand.
2. Camels store food in their humps.
3. Camels excrete small amounts of urine, their dung is dry, and they do not sweat.

Question 9.
What are the adaptations found in rhododendrons and deodar trees that make them capable to survive in mountain regions?
Answer:
Deodar trees are conical in shape and have flexible and sloping branches which let the snow slide off easily. Similarly, rhododendrons are of shorter height and have smaller leaves to survive through the heavy winds on mountain tops.

Question 10.
What are ‘habitats’? How habitats are important for plants and animals?
Answer:
The place where plants and animals live is called their habitat. The habitat of plants and animals provides them food, water, air, shelter and other needs for their survival.

Question 11.
How does habitat plays an important role in creating a biodiversity of a region?
Answer:
The habitat of plants and animals provides them food, water, air, shelter and other needs for their survival. Different plants and animals can live in different habitats and many plants and animals can live in the same habitat. Thus, the habitat plays an important role in creating the biodiversity of a region.

Question 12.
What will happen if the habitat of a plant or animal gets damaged?
Answer:
The damage to habitats of plants and animals results in loss of their homes, food, and other resources. This leads to the loss of biodiversity.

Long Answer Type Questions

Question 1.
What do you understand by ‘Sacred Groves’?
Answer:
Sacred groves are undisturbed patches of forests. Their sizes may vary from quite small to very large. Sacred groves are found all over India. They are home to different kinds of plants and animals, including numerous medicinal plants. These are protected by the local community and no one is allowed to harm any animals and cut trees in these groves, or disturb the area. This way, sacred groves are a community protected treasure of biodiversity.

Question 2.
What is meant by biodiversity? What is the role of its members in the biodiversity of an area?
Answer:
The variety of plants and animals found in a particular region contributes to the biodiversity of that region. Each member in the biodiversity of a region has a different role to play. For example, trees provide food and shelter to some birds and other animals, animals help in spreading seeds after eating fruits, and so on. This shows that plants and animals are dependent on each other.

Question 3.
How can we make groups of plants as herbs, shrubs and trees? Explain with examples.
Answer:
We can make groups of plants as herbs, shrubs and trees on the basis of the following-
(i) Some plants grow really tall and have hard, thick, brown, and woody stems. Their branches typically start higher up on the stem and away from the ground. These plants are called trees. For example, a mango tree.

(ii) Some plants are not as tall as trees. These plants often have many brown woody stems that start branching very close to the ground. These stems are hard but not as thick as the stem of a tree. These plants are called shmbs. For example, a rose plant is a shrub.

(iii) Some plants are typically small with soft and green stems. These are known as herbs. For example, a tomato plant is a herb.

Question 4.
Is there any relation between the type of venation in the leaf of a plant and the type of its root? Explain by giving an example.
Answer:
To see the relation between the venation of leaves of plants and the type of roots, we can take the example of a sadabahar plant and lemon grass plants. Sadabahar plants have taproots and reticulate venation in the leaves. On the other hand, lemon grass plants have fibrous roots and parallel venation in the leaves. Thus, generally, plants with reticulate venation have taproots while those with parallel venation have fibrous roots.

Question 5.
Write a brief note on the following-
(i) terrestrial habitats (ii) aquatic habitats (iii) amphibians
Answer:
(i) Terrestrial habitats— The plants and animals that live on land are said to live in terrestrial habitats. Some examples of terrestrial habitats are forests, deserts, grasslands, and mountains.

(ii) Aquatic habitats— The plants and animals that live in water are said to live in aquatic habitats. Some examples of aquatic habitats are ponds, lakes, rivers, and oceans.

(iii) Amphibians— Some animals, such as frogs, can live in water as well as on land. These are called amphibians.

Essay Type Questions

Question 1.
What is venation? Explain its types with the help of diagrams.
Answer:
Thin lines are found on the leaves of the plants which are called veins. The pattern of veins on the leaf is called venation.
Two types of venation are found on the leaves of the plants—

(i) Reticulate venation— In some leaves, you can observe a net-like pattern of veins on both sides of a thick middle veirf. This pattern is called reticulate venation. For example, leaves of hibiscus exhibit reticulate venation.

(ii) Parallel venation— In some leaves, you may observe that the veins run parallel. This pattern is called parallel venation. For example, the leaves of banana plants and grasses exhibit parallel venation.

Fig: Leaves showing different types of venation

Question 2.
Explain the different types of roots in plants with the help of labelled diagram.
Answer:
In plants, two types of roots are found

(i) Taproot—The roots consist of one main root and small side roots arising from it. The main root is called taproot Example – Roots of mustard and hibiscus plant.

(ii) Fibrous Roots—These roots appear as a bunch of similar-sized thin roots arising from the base of the stem. Such roots are called fibrous roots. Example – Roots in grass

Fig : Types of roots

Question 3.
On the basis of cotyledons, how many groups are plants divided into? Explain each group and draw a labelled diagram of monocotyledonous seeds and dicotyledonous seeds.
Answer:
On the basis of cotyledons, plants are divided into two groups—
(i) Dicotyledonous Plants—Plants that have seeds with two cotyledons are called dicotyledons (dicots). Example – Chickpea seeds.

(ii) Monocotyledonous Plants—Plants with such seeds are called monocotyledons (monocots). Example—Maize seeds.

Fig: Dicot and monocot seeds

Question 4.
Why is the biodiversity of one region different from the biodiversity of other regions? Explain with an example.
Answer:
There is very little water available in the deserts. A hot desert is typically very hot during the day and very cold at night. Therefore, you will find plants and animals in these areas that can tolerate and survive both the hot conditions during the day and cold conditions at night. The fleshy stems of cactus plants found in the desert can store water and help them tolerate the hot conditions in these places.

The mountains in extremely cold regions experience frequent snowfall. In order to survive in such conditions, some of the trees have the ability to let the snow slide off easily. Conical shape and sloping branches of deodar trees enable them to do so easily. Some plants are of shorter height and have smaller leaves to survive through the heavy winds on mountain tops. Thus, the biodiversity of different places is very different from each other due to the local conditions.

Question 5.
What differences are seen between the camels of the hot desert of Rajasthan and the camels of the cold desert of Ladakh? What advantages do camels get due to these differences?
Answer:
The camel in the hot desert has long legs with wide hooves. The long legs and wide hooves help these camels to walk on the sandy desert without sinking into the sand. On the other hand, the height and legs of camels in a cold desert are comparatively shorter than those found in a hot desert. These short legs allow them to walk easily in mountainous regions.

In deserts, food is not available easily. Camels store food in their humps. Camels in the hot desert have one hump each that helps them to survive during the scarcity of food. Camels in the cold desert have two humps each. These two humps shrink in late winters because there is not much food available in the cold desert and they have to use food stored in their humps during that time. Moreover, they grow long hair from head to neck, which help them survive the cold winters of Ladakh.

RBSE Class 6 Science Chapter 2 Notes

Class 6 Science Chapter 2 Notes RBSE – Diversity in the Living World Class 6 Notes

1. We are surrounded by a large variety of plants and animals. The variety of plants and animals found in a particular region contributes to the biodiversity of that region.
2. Plants and animals can be grouped on the basis of similarities and differences among them.
3. Plants have similarities and differences based on features associated with roots, stems, leaves, flowers, and so on.
4. Animals have different types of movement that can be a basis for their grouping.
5. The method of arranging plants an animals into groups based on their common features is called grouping.
6. Plants can be grouped into herbs, shrubs, and trees based on their heights, types of stem, and branching patterns.
7. Plants can also be grouped as dicotyledons (dicots) and monocotyledons (monocots) based on the number of cotyledons in their seeds.
8. Monocots generally exhibit parallel venation in their leaves and possess fibrous roots while dicots typically exhibit reticulate venation in their leaves and possess taproots.
9. Biodiversity of different regions varies because of distinct environmental conditions.
10. The special features that enable plants and animals to survive in a particular region are called adaptations.
11. The place where plants and animals live is called their habitat.
12. Based on their habitats, animals and plants can be grouped into terrestrial and aquatic.
13. Due to damage of their habitats, plants and animals lose their homes, food and other resources resulting in the loss of biodiversity.
14. We must protect biodiversity to ensure our planet is full of life, helping plants and animals to survive and thrive.