Chapter 2: Diversity in the Living World
Comprehensive Exercise (Made for exam preparation)
Class 6 Science
Question 1: Choose the correct option (Multiple Choice Questions):
1. What do we call the variety of plants and animals found in a particular region?
Answer: (B) Biodiversity.
2. Which of the following plants has a fibrous root system?
Answer: (C) Common grass.
3. Which of the following is an example of a dicot seed?
Answer: (D) Chickpea.
4. Which body part does a fish use for movement in water?
Answer: (C) Fins.
5. Which of the following trees is typically found in the mountains and has a conical shape?
Answer: (C) Deodar.
Question 2: Fill in the blanks with the appropriate words:
- 1. Grouping makes it easier to understand and study plants and animals based on their similarities and differences.
- 2. A cactus plant has a thick and fleshy stem to survive in the desert.
- 3. Pigeons and houseflies use their legs to walk and wings to fly.
- 4. The mustard plant has a taproot root system.
- 5. A maize seed is an example of a monocot seed because it has only one cotyledon.
Question 3: State whether the following statements are True or False:
- 1. All plants have the exact same type of root system.
Answer: False (Different plants have different root systems, like taproot and fibrous roots). - 2. The plants and animals found in one kind of region are different from those found in another kind of region.
Answer: True. - 3. A goat uses its fins to walk and jump on the ground.
Answer: False (A goat uses its legs to walk and jump). - 4. Plants can be grouped based on features like the shape of their leaves and the type of their stem.
Answer: True. - 5. A mountain goat is an animal typically found in the hot desert.
Answer: False (A mountain goat is found in the mountains).
Question 4: Match the items in Column 'A' with the correct items in Column 'B':
| Column 'A' | Column 'B' |
|---|---|
| 1. Camel | (a) Lives in the ocean |
| 2. Deodar tree | (b) Taproot system |
| 3. Fish | (c) Eats grasses and leaves |
| 4. Mustard plant | (d) Found in the desert |
| 5. Cow | (e) Found in the mountains |
Correct Matches:
- 1 → (d) Found in the desert
- 2 → (e) Found in the mountains
- 3 → (a) Lives in the ocean
- 4 → (b) Taproot system
- 5 → (c) Eats grasses and leaves
Question 5: Classification. Classify the following living creatures into "Plants" and "Animals":
Items: 1. Tulsi, 2. Ant, 3. Hibiscus, 4. Pigeon, 5. Neem.
- Plants: 1. Tulsi, 3. Hibiscus, 5. Neem.
- Animals: 2. Ant, 4. Pigeon.
Question 6: Answer the following questions in one sentence:
1. What does the variety of plants and animals in a region contribute to?
Answer: The variety of plants and animals found in a particular region contributes to the biodiversity of that region.
2. Name the two types of root systems shown in the chapter.
Answer: The two types of root systems are the taproot system and the fibrous root system.
3. What body parts do goats use to move around?
Answer: Goats use their legs to walk and jump on the ground.
4. Give an example of a monocot seed and a dicot seed.
Answer: Maize is a monocot seed, and chickpea is a dicot seed.
5. Why is grouping important in science?
Answer: Grouping makes it easier to understand and study plants and animals on the basis of their similarities and differences.
Question 7: Give scientific reasons:
1. Reason: A cactus plant is different from a normal tree.
Answer: Because a cactus is found in the desert and has adapted by having thick and fleshy stems to survive in a hot and dry region.
2. Reason: We group plants and animals into different categories.
Answer: Because there is a huge variety of plants and animals around us, and grouping them based on similar features makes it much easier to study and understand them.
3. Reason: Deodar trees have a conical shape and flexible, sloping branches.
Answer: Because they are found in mountain regions (like the Himalayas), and this specific shape helps them survive in their mountainous habitat.
4. Reason: Animals move in many different ways (like walking, flying, or swimming).
Answer: Because animals live in different places (land, air, water) and use different body parts like legs, wings, or fins to survive and move in their specific habitats.
5. Reason: Chickpea and maize cannot be kept in the exact same seed group.
Answer: Because chickpea is a dicot seed (having two cotyledons) whereas maize is a monocot seed (having only one cotyledon).
Question 8: Answer the following questions in short:
1. List any four features that can be used to group different plants.
Answer: Plants can be grouped based on features such as: (1) Tall or short height, (2) Hard or soft stem, (3) Shapes of leaves and their arrangement, and (4) Variations in flowers (colour, shape, scent).
2. What is the main difference between the roots of a mustard plant and common grass?
Answer: The mustard plant has a taproot system (one main root), whereas common grass has a fibrous root system (many small roots).
3. Name three different regions (habitats) mentioned in the chapter and give one example of an animal found in each.
Answer: The three regions are: (1) Desert - Camel, (2) Mountains - Mountain goat, and (3) Ocean - Fish.
4. Name two animals from the chapter that can both walk and fly, and mention the body parts they use.
Answer: Pigeons and houseflies are two animals that can both walk and fly; they use their legs for walking and wings for flying.
5. How do the plants and animals of one region compare to those of another region? Explain with an example.
Answer: Plants and animals found in one region are very different from those in another region because of their surroundings. For example, a cactus is found in the desert with thick fleshy stems, while a deodar tree is found in the mountains with a conical shape.