Chapter 2: Diversity in the Living World Worksheet
Chapter 2: Diversity in the Living World
Worksheet
A. Multiple Choice Questions
1. The variety of plants and animals found in a particular region is called:
- (a) Habitat
- (b) Biodiversity
- (c) Adaptation
- (d) Venation
Answer: (b) Biodiversity
2. Which of the following has a soft, green stem?
- (a) Mango
- (b) Rose
- (c) Tomato
- (d) Deodar
Answer: (c) Tomato
3. A plant with a weak stem that needs support to grow upward is called a:
- (a) Herb
- (b) Shrub
- (c) Climber
- (d) Tree
Answer: (c) Climber
4. The pattern of veins on a leaf is called:
- (a) Rooting
- (b) Venation
- (c) Germination
- (d) Adaptation
Answer: (b) Venation
5. Which plant generally has parallel venation?
- (a) Hibiscus
- (b) Mustard
- (c) Banana
- (d) Rose
Answer: (c) Banana
6. Which type of root has one main root with smaller side roots?
- (a) Fibrous root
- (b) Taproot
- (c) Aerial root
- (d) Hair root
Answer: (b) Taproot
7. A seed having two cotyledons is called:
- (a) Monocot
- (b) Dicot
- (c) Herb
- (d) Shrub
Answer: (b) Dicot
8. Which of the following is a monocot?
- (a) Chickpea
- (b) Mustard
- (c) Maize
- (d) Hibiscus
Answer: (c) Maize
9. Which body feature helps fish to swim easily?
- (a) Thick fur
- (b) Streamlined body
- (c) Long legs
- (d) Wide hooves
Answer: (b) Streamlined body
10. A place where plants and animals live is called their:
- (a) Habitat
- (b) Biodiversity
- (c) Venation
- (d) Community
Answer: (a) Habitat
11. Which of the following is an aquatic habitat?
- (a) Desert
- (b) Mountain
- (c) Pond
- (d) Grassland
Answer: (c) Pond
12. A frog can live both on land and in water. It is an:
- (a) Aquatic animal
- (b) Amphibian
- (c) Terrestrial animal
- (d) Reptile
Answer: (b) Amphibian
13. The thick fleshy stem of a cactus helps it to:
- (a) Produce flowers
- (b) Store water
- (c) Climb trees
- (d) Absorb snow
Answer: (b) Store water
14. Sacred groves are:
- (a) Agricultural fields
- (b) Undisturbed forest patches protected by communities
- (c) Desert areas
- (d) Artificial gardens
Answer: (b) Undisturbed forest patches protected by communities
15. Which project was started in 1973 to help protect tigers?
- (a) Project Cheetah
- (b) Project Tiger
- (c) Project Forest
- (d) Project Biodiversity
Answer: (b) Project Tiger
B. True or False
1. Biodiversity means the variety of plants and animals in a region.
Answer: True
2. Trees have soft, green stems.
Answer: False
3. Climbers need support to grow upward.
Answer: True
4. Reticulate venation has veins arranged in a net-like pattern.
Answer: True
5. Grass generally has a taproot.
Answer: False
6. Maize is a monocot plant.
Answer: True
7. Fish have legs that help them walk on land.
Answer: False
8. A habitat provides organisms with their basic needs such as food, water and shelter.
Answer: True
9. Destruction of habitats can reduce biodiversity.
Answer: True
10. Sacred groves are protected by local communities.
Answer: True
C. Fill in the Blanks
1. The variety of plants and animals in a region is called __________.
Answer: biodiversity
2. A small plant with a soft green stem is called a __________.
Answer: herb
3. A medium-sized plant with woody stems is called a __________.
Answer: shrub
4. The pattern of veins on a leaf is called __________.
Answer: venation
5. __________ venation has veins arranged in a net-like pattern.
Answer: Reticulate
6. A root having one main root with smaller side roots is called a __________.
Answer: taproot
7. Maize has __________ cotyledon.
Answer: one
8. The special features that help organisms survive in their surroundings are called __________.
Answer: adaptations
9. A place where an organism lives is called its __________.
Answer: habitat
10. Forest patches protected by local communities are called __________.
Answer: sacred groves
D. Match the Following
Column A Column B
- 1. Mango (a) Fibrous roots
- 2. Rose (b) Aquatic habitat
- 3. Grass (c) Tree
- 4. Banana (d) Shrub
- 5. Fish (e) Parallel venation
- 6. Hibiscus (f) Taproot
- 7. Frog (g) Amphibian
- 8. Cactus (h) Stores water
- 9. Maize (i) Monocot
- 10. Chickpea (j) Dicot
Answers:
1–(c), 2–(d), 3–(a), 4–(e), 5–(b), 6–(f), 7–(g), 8–(h), 9–(i), 10–(j)
E. Very Short Answer Questions
1. What is biodiversity?
Answer: Biodiversity is the variety of plants and animals found in a particular region.
2. What is a herb?
Answer: A herb is a small plant with a soft, green stem.
3. What is a shrub?
Answer: A shrub is a medium-sized plant with woody stems and branches near the ground.
4. What is venation?
Answer: Venation is the pattern of veins on a leaf.
5. What is a taproot?
Answer: A taproot has one main root with smaller side roots.
6. What is a fibrous root?
Answer: Fibrous roots consist of many thin roots of similar size arising from the base of the stem.
7. What is a habitat?
Answer: A habitat is the place where a plant or animal lives.
8. What is an adaptation?
Answer: An adaptation is a special feature that helps an organism survive in its surroundings.
9. Give one example of a monocot plant.
Answer: Maize.
10. Give one example of an amphibian.
Answer: Frog.
F. Short Answer Questions
1. Why is grouping of plants and animals useful?
Answer: Grouping helps us organise living things according to their similarities and differences. It makes their study easier and systematic.
2. Differentiate between herbs, shrubs and trees.
Answer:
Herb Shrub Tree
Small plant Medium-sized plant Tall plant
Soft green stem Woody stems Thick, hard woody stem
Example: Tomato Rose Mango
3. Differentiate between reticulate and parallel venation.
Answer:
- Reticulate venation: Veins form a net-like pattern. Example: Hibiscus.
- Parallel venation: Veins run parallel to one another. Example: Banana.
4. Differentiate between taproot and fibrous root.
Answer:- A taproot has one main root with smaller side roots, as in mustard. Fibrous roots have many thin roots of similar size, as in grass.
5. What are monocots and dicots?
Answer: Plants whose seeds have one cotyledon are called monocots, while plants whose seeds have two cotyledons are called dicots.
6. How does a fish's body help it to live in water?
Answer: A fish has a streamlined body and fins. Its streamlined shape helps it move easily through water.
7. Why does a cactus have a thick, fleshy stem?
Answer: The thick, fleshy stem of a cactus stores water and helps the plant survive in dry desert conditions.
8. What is the difference between terrestrial and aquatic habitats?
Answer:
- Terrestrial habitats are found on land, such as forests, deserts and mountains.
- Aquatic habitats are found in water, such as ponds, rivers, lakes and oceans.
9. How does habitat destruction affect biodiversity?
Answer: Habitat destruction removes the places where plants and animals live and find food and other resources. It can therefore lead to a decline in biodiversity.
10. What are sacred groves?
Answer: Sacred groves are undisturbed patches of forest protected by local communities. They are important stores of biodiversity.
G. Long Answer Questions
1. Explain the different ways in which plants can be grouped.
Answer:- Plants can be grouped on the basis of their height, stem, leaves, flowers and roots.
- Herbs: Small plants with soft green stems, e.g. tomato.
- Shrubs: Medium-sized plants with woody stems and branches near the ground, e.g. rose.
- Trees: Tall plants with thick, hard and woody stems, e.g. mango.
- Climbers: Plants with weak stems that need support to grow upward.
- Creepers: Plants with weak stems that grow along the ground.
Plants can also be grouped according to leaf venation and type of roots.
2. Explain the difference between monocot and dicot plants.
Answer:
Monocot Plants Dicot Plants
- Seed has one cotyledon Seed has two cotyledons
- Generally have parallel venation Typically have reticulate venation
- Generally have fibrous roots Typically have taproots
- Example: Maize Example: Chickpea
These features help us group plants based on their similarities.
3. What are adaptations? Explain with examples.
Answer: Adaptations are special features that help plants and animals survive in particular surroundings.
Examples:
- Cactus: Its thick, fleshy stem stores water.
- Deodar: Its conical shape and sloping branches help snow slide off.
- Camel: Its long legs and wide hooves help it walk on desert sand.
- Fish: Its streamlined body helps it swim through water.
Thus, adaptations help organisms survive in their habitats.
4. Explain the different types of habitats with examples.
Answer:- A habitat is the place where an organism lives and gets food, water, air and shelter.
There are two broad types:
1. Terrestrial habitats: These are land habitats. Examples include forests, deserts, grasslands and mountains.
2. Aquatic habitats: These are water habitats. Examples include ponds, lakes, rivers and oceans.
Some animals, such as frogs, can live both on land and in water. They are called amphibians.
5. Why does biodiversity vary from one region to another?
Answer:- Biodiversity varies because different regions have different environmental conditions. Temperature, availability of water, landforms and other conditions affect the plants and animals that can survive there.
For example:
- Cactus is suited to hot, dry deserts.
- Deodar is suited to mountainous regions.
- Fish are suited to aquatic habitats.
Therefore, different surroundings support different forms of life.
6. How does habitat destruction affect plants and animals? What can we do to protect biodiversity?
Answer:- When habitats are damaged or destroyed, plants and animals lose their homes, food and other resources. This can cause their populations to decline and may lead to loss of biodiversity.
We can help protect biodiversity by:
- Protecting forests and natural habitats.
- Preventing unnecessary cutting of trees.
- Protecting endangered species.
- Supporting protected areas.
- Conserving sacred groves.
- Creating awareness about biodiversity conservation.
7. How are plants and animals dependent on each other?
Answer:- Plants and animals depend on each other in many ways. Plants provide food and shelter to animals. Animals, in turn, can help plants by carrying and dispersing their seeds.
Thus, plants and animals are connected to each other. Protecting both is important for maintaining biodiversity and healthy ecosystems.
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