Biodiversity means the variety of plants and animals found in a particular region.
Plants and animals differ in stems, leaves, roots, seeds, movement, habitat, and adaptations.
Nature shows variety through every leaf, bird call, root, seed, and animal movement. Important Questions Class 6 Science Chapter 2 help students revise biodiversity, grouping, plant features, animal movement, habitats, and adaptations for CBSE 2026. The chapter builds learning through a nature walk with Dr Raghu, Maniram chacha, and Madam Sulekha. Students observe grasses, shrubs, trees, birds, butterflies, monkeys, roots, leaves, seeds, camels, fish, and mountain plants. These examples help students answer observation-based and reasoning-based questions from Diversity in the Living World.
Key Takeaways
- Biodiversity: The variety of plants and animals in a region forms its biodiversity.
- Plant Grouping: Plants can be grouped by height, stem, roots, leaves, flowers, and seeds.
- Root-Venation Link: Dicots usually have taproots and reticulate venation.
- Habitats: Terrestrial and aquatic habitats support different plants and animals.
Important Questions Class 6 Science Chapter 2 Structure 2026
| Principle |
Application |
Unit |
| Biodiversity |
Observe variety in plants and animals |
Living world |
| Grouping |
Classify organisms by common features |
Classification |
| Adaptation |
Explain survival in different regions |
Habitat |
Important Questions Class 6 Science Chapter 2 With Answers
Important Questions Class 6 Science Chapter 2 With Answers focus on observation and classification. Students should connect each answer with examples from nature walks.
Q1. What Is Biodiversity In Class 6 Science?
Biodiversity is the variety of plants and animals found in a particular region. It includes grasses, trees, birds, insects, fish, and many other living forms.
Each member of biodiversity has a role. Trees provide food and shelter, while animals help spread seeds.
Q2. Why Do Plants And Animals Show Diversity?
Plants and animals show diversity because they have different features and live in different surroundings. Their stems, leaves, roots, movement, food, and habitats vary.
A fish has fins for swimming. A goat has legs for walking on land.
Q3. Why Should Students Observe Plants And Animals Without Disturbing Them?
Students should observe plants and animals without disturbing them because all living creatures need respect and safety. Nature walks teach careful observation.
Students should not pluck leaves or flowers. They should record fallen leaves and visible features.
Q4. Why Is Grouping Important In Science?
Grouping helps students study plants and animals by their similarities and differences. It makes a large variety easier to understand.
Students can group plants by stem type. They can group animals by habitat, food, or movement.
Q5. What Is The Role Of Plants And Animals In Biodiversity?
Plants and animals support one another in biodiversity. Trees provide food and shelter, while animals may spread seeds.
This shows interdependence in nature. Many organisms share resources within a habitat.
Class 6 Science Chapter 2 Important Questions On Plant Diversity
Class 6 Science Chapter 2 Important Questions on plant diversity cover stems, leaves, flowers, roots, and seeds. These questions help students identify plants through visible features.
Q1. How Do Plants Differ From One Another?
Plants differ in height, stem type, leaf shape, leaf arrangement, flower colour, and scent. These features help students compare plants.
A mango tree has a thick woody stem. Grass has soft, thin leaves and a weak stem.
Q2. What Are Herbs, Shrubs, And Trees?
Herbs, shrubs, and trees are plant groups based on height, stem type, and branching pattern. Each group has distinct stem features.
Herbs have soft green stems. Shrubs have many woody stems near the ground. Trees have thick woody trunks.
Q3. What Are Herbs In Class 6 Science?
Herbs are small plants with soft and green stems. Tomato is an example of a herb.
Herbs usually do not have thick woody stems. Their stems bend more easily than shrubs or trees.
Q4. What Are Shrubs In Class 6 Science?
Shrubs are medium-sized plants with many hard woody stems near the ground. Rose is an example of a shrub.
Shrubs are shorter than trees. Their branches start close to the ground.
Q5. What Are Trees In Class 6 Science?
Trees are tall plants with hard, thick, brown, woody stems. Mango is an example of a tree.
Their branches usually start higher up on the stem. Trees often live longer than herbs and shrubs.
Herbs Shrubs And Trees Class 6 Questions
Herbs Shrubs And Trees Class 6 Questions test plant grouping through stem and height. Students should observe branching points carefully.
Q1. How Can Students Identify A Tree?
Students can identify a tree by its tall height and thick woody stem. A tree usually has branches higher above the ground.
Mango and neem are common examples. Their hard stems support large branches.
Q2. How Can Students Identify A Shrub?
Students can identify a shrub by its medium height and many woody stems. Its branches often start near the ground.
Rose and hibiscus are common examples. Their stems are hard but thinner than tree trunks.
Q3. How Can Students Identify A Herb?
Students can identify a herb by its short height and soft green stem. It usually bends more easily than woody plants.
Tomato and common grasses show herb-like features. They have tender stems.
Q4. What Are Climbers?
Climbers are plants with weak stems that need support to grow upward. They cannot stand straight without help.
They climb around nearby objects. This support helps them reach more sunlight.
Q5. What Are Creepers?
Creepers are plants that grow along the ground. Their weak stems spread horizontally.
They cannot climb like climbers. Their stems remain close to the soil surface.
Diversity In The Living World Class 6 Questions On Roots And Leaves
Diversity In The Living World Class 6 Questions on roots and leaves explain venation and root systems. These features help students group plants accurately.
Q1. What Is Venation?
Venation is the pattern of veins on a leaf. Veins appear as thin lines on the leaf surface.
Students can observe venation by looking closely at leaves. Hibiscus, banana, and grass show clear patterns.
Q2. What Is Reticulate Venation?
Reticulate venation is a net-like pattern of veins on both sides of a middle vein. Hibiscus leaves show this pattern.
Plants with reticulate venation generally have taproots. Sadabahar and chickpea also show this link.
Q3. What Is Parallel Venation?
Parallel venation is a leaf pattern where veins run parallel to each other. Banana and grass leaves show this pattern.
Plants with parallel venation generally have fibrous roots. Lemongrass and wheat are examples.
Q4. What Is Taproot?
Taproot is a root system with one main root and smaller side roots. Mustard and hibiscus have taproots.
The main root grows downward. Side roots arise from the main root.
Q5. What Is Fibrous Root?
Fibrous root is a root system with many similar-sized thin roots from the stem base. Grass has fibrous roots.
There is no single main root. The roots appear as a bunch.
Taproot And Fibrous Root Class 6 Questions
Taproot And Fibrous Root Class 6 Questions help students compare root systems. These questions often connect roots with leaf venation.
Q1. What Is The Main Difference Between Taproot And Fibrous Root?
Taproot has one main root, while fibrous root has many similar thin roots. This difference helps identify plant groups.
Mustard has taproot. Common grass has fibrous root.
Q2. Which Root Type Does Radish Have?
Radish has a taproot. It is a thickened root that grows below the soil.
Radish leaves show reticulate venation. This matches the usual taproot and reticulate pattern.
Q3. Which Plants Usually Have Taproots?
Dicot plants usually have taproots. Chickpea, mustard, hibiscus, and sadabahar are examples.
Their leaves generally show reticulate venation. Their seeds usually have two cotyledons.
Q4. Which Plants Usually Have Fibrous Roots?
Monocot plants usually have fibrous roots. Grass, wheat, maize, and lemongrass are examples.
Their leaves generally show parallel venation. Their seeds usually have one cotyledon.
Q5. What Relation Exists Between Venation And Roots?
Plants with reticulate venation usually have taproots, while plants with parallel venation usually have fibrous roots. This pattern helps grouping.
Hibiscus shows reticulate venation and taproot. Grass shows parallel venation and fibrous roots.
Class 6 Science Diversity In The Living World Questions On Seeds
Class 6 Science Diversity In The Living World Questions on seeds cover cotyledons, monocots, and dicots. These concepts link seeds with roots and leaves.
Q1. What Are Cotyledons?
Cotyledons are seed parts seen inside a seed. Chickpea has two cotyledons, while maize has one cotyledon.
Students can observe this after soaking seeds. The seed coat comes off more easily after soaking.
Q2. What Are Dicot Plants?
Dicot plants have seeds with two cotyledons. Chickpea is a dicot plant.
Dicots usually have taproots and reticulate venation. Kidney bean also belongs to this group.
Q3. What Are Monocot Plants?
Monocot plants have seeds with one cotyledon. Maize is a monocot plant.
Monocots usually have fibrous roots and parallel venation. Wheat also belongs to this group.
Q4. How Are Chickpea And Maize Seeds Different?
Chickpea has two cotyledons, while maize has one cotyledon. This makes chickpea a dicot and maize a monocot.
Chickpea plants usually show taproot and reticulate venation. Maize plants usually show fibrous roots and parallel venation.
Q5. Why Do Students Soak Seeds Before Observing Them?
Students soak seeds to soften the seed coat and observe seed parts easily. Soaking helps reveal cotyledons.
Chickpea splits clearly after soaking. Maize shows a single thin cotyledon.
Monocot And Dicot Plants Class 6 Important Questions
Monocot And Dicot Plants Class 6 Important Questions connect seeds, roots, and leaves. Students should revise these three features together.
Q1. What Features Do Dicot Plants Usually Have?
Dicot plants usually have two cotyledons, taproots, and reticulate venation. Chickpea is an example.
Kidney bean also shows dicot features. Its plant has taproot and net-like leaf veins.
Q2. What Features Do Monocot Plants Usually Have?
Monocot plants usually have one cotyledon, fibrous roots, and parallel venation. Wheat is an example.
Maize and lemongrass also show monocot features. Their roots form a bunch of similar thin roots.
Q3. Why Is Wheat A Monocot Plant?
Wheat is a monocot plant because it has one cotyledon. It also has fibrous roots and parallel venation.
These features match the monocot pattern. Students can use all three clues together.
Q4. Why Is Kidney Bean A Dicot Plant?
Kidney bean is a dicot plant because its seed has two cotyledons. It also develops a taproot system.
Its leaves usually show reticulate venation. These features match the dicot pattern.
Q5. Why Is The Seed-Root-Leaf Link Useful?
The seed-root-leaf link helps students identify plant groups accurately. One feature can support another feature.
If a plant has parallel venation, it likely has fibrous roots. This pattern supports classification.
Important Questions Class 6 Science Chapter 2 On Animal Diversity
Important Questions Class 6 Science Chapter 2 on animals focus on habitat, food, movement, and body parts. Students should compare animals through observable features.
Q1. How Can Animals Be Grouped By Movement?
Animals can be grouped by movement such as walking, flying, swimming, crawling, hopping, or jumping. Movement helps compare animal features.
A pigeon walks and flies. A fish swims using fins.
Q2. What Body Parts Help Animals Move?
Animals use legs, wings, fins, and other body parts for movement. Different animals use different parts.
Goats use legs for walking and jumping. Houseflies use legs and wings.
Q3. How Does A Fish Move In Water?
A fish swims in water using fins and a streamlined body. These features help it move smoothly.
Water is the fish’s habitat. Its body shape supports movement in that habitat.
Q4. How Does A Goat Move On Land?
A goat moves on land using legs. It can walk and jump in grassy areas.
Its legs suit terrestrial movement. This differs from fish movement in water.
Q5. Why Is Animal Grouping Important?
Animal grouping helps students understand animal diversity by common features. Movement, habitat, food, and body parts can guide grouping.
Students can group birds together by wings. They can group aquatic animals by water habitat.
Animal Diversity Class 6 Questions On Movement And Body Parts
Animal Diversity Class 6 Questions help students compare animals through action. These questions support observation tables and field activities.
Q1. Which Animals Walk And Fly?
Pigeons and houseflies can walk and fly. They use legs for walking and wings for flying.
Birds and many insects show more than one type of movement. This helps classify them by body parts.
Q2. Which Animals Swim?
Fish, dolphins, whales, and some turtles swim in water. Their bodies suit aquatic habitats.
Fish use fins for movement. Whales and dolphins move with bodies adapted to water.
Q3. Which Animals Live On Land?
Horse, sheep, squirrel, pigeon, and earthworm mainly live on land. They belong to terrestrial habitats.
Some terrestrial animals walk or crawl. Their movement depends on body structure.
Q4. Which Animals Live In Water And On Land?
Frog, crocodile, and tortoise can use both land and water habitats. The frog is an amphibian.
Such animals need features that support both surroundings. Their habits differ from fully aquatic animals.
Q5. How Can Students Group Animals Apart From Movement?
Students can group animals by habitat, food, colour, body covering, or body parts. Different criteria give different groups.
A cow eats grass and leaves. A crow may eat insects and other food.
Class 6 Science Chapter 2 Questions And Answers On Habitats And Adaptations
Class 6 Science Chapter 2 Questions And Answers on habitats and adaptations explain survival. Plants and animals develop features suited to their surroundings.
Q1. What Is A Habitat?
A habitat is the place where a plant or animal lives. It provides food, water, air, shelter, and survival needs.
The ocean is the habitat of sea turtles. The desert is the habitat of camels.
Q2. What Are Adaptations?
Adaptations are special features that help plants and animals survive in a particular region. They match the conditions of a habitat.
Cactus has fleshy stems in deserts. Deodar has a conical shape in mountains.
Q3. What Are Terrestrial Habitats?
Terrestrial habitats are land habitats. Forests, deserts, grasslands, and mountains are examples.
Plants and animals living on land belong to terrestrial habitats. Goats and deodar trees are examples.
Q4. What Are Aquatic Habitats?
Aquatic habitats are water habitats. Ponds, lakes, rivers, and oceans are examples.
Fish, whales, and many water plants live in aquatic habitats. Their bodies suit water surroundings.
Q5. What Are Amphibians?
Amphibians are animals that can live on land and in water. Frog is an example.
Frogs use both habitats during life. This makes them different from fully aquatic animals.
Habitat And Adaptation Class 6 Questions
Habitat And Adaptation Class 6 Questions connect body features with survival. These answers help students explain desert, mountain, and ocean examples.
Q1. How Does A Cactus Survive In A Desert?
A cactus survives in a desert with thick and fleshy stems that store water. This helps it tolerate dry conditions.
Deserts have very little water. Plants there need features that reduce water loss.
Q2. How Does A Deodar Tree Survive In Mountains?
A deodar tree survives in mountains through its conical shape and sloping branches. Snow slides off easily from such branches.
Cold mountains often receive snowfall. Flexible branches help the tree manage snow.
Q3. How Does A Hot Desert Camel Survive?
A hot desert camel survives with long legs, wide hooves, one hump, and low water loss. These features suit sandy deserts.
Long legs and wide hooves prevent sinking in sand. Dry dung and little sweat reduce water loss.
Q4. How Does A Cold Desert Camel Survive?
A cold desert camel survives with shorter legs, two humps, and long hair. These features suit Ladakh’s cold desert.
Short legs help it walk in mountainous regions. Long hair protects it in winter.
Q5. Why Do Rhododendrons Differ In Different Regions?
Rhododendrons differ because regional conditions affect their features. Mountain winds can influence height and leaf size.
Nilgiri rhododendrons may remain shorter with smaller leaves. Other regions may show taller plants.
Diversity In The Living World Class 6 Extra Questions
Diversity In The Living World Class 6 Extra Questions test reasoning from NCERT examples. These questions help students answer application-based exam prompts.
Q1. Why Does Biodiversity Vary From Region To Region?
Biodiversity varies because regions have different climate, water, landforms, and survival conditions. These conditions shape plant and animal features.
Deserts support cactus and camels. Mountains support deodar trees and mountain goats.
Q2. What Happens When Habitats Are Damaged?
Habitat damage causes loss of homes, food, and other resources for plants and animals. This leads to biodiversity loss.
Animals may disappear from an area. Plants may also reduce when their surroundings change.
Q3. Why Should Biodiversity Be Protected?
Biodiversity should be protected because plants and animals support life in many connected ways. Each organism has a role.
Forests, sacred groves, and protected areas conserve species. They also protect habitats.
Q4. What Are Sacred Groves?
Sacred groves are protected forest patches preserved by local communities. People do not cut trees or harm animals there.
These groves support biodiversity. They often contain medicinal plants and many local species.
Q5. What Was The Save Silent Valley Movement?
The Save Silent Valley movement protected a moist evergreen forest in Kerala. People opposed a dam proposal for ten years.
The movement used awareness, articles, petitions, and legal action. It helped save rich biodiversity.
Class 6 Science Chapter 2 Exercise Questions And Answers
Class 6 Science Chapter 2 exercise questions test NCERT application skills. These answers follow the latest 2026 book content.
Q1. What Differences Do Wheat And Kidney Bean Plants Show?
Wheat is a monocot, while kidney bean is a dicot. Wheat has fibrous roots and parallel venation.
Kidney bean has taproot and reticulate venation. Its seed has two cotyledons.
Q2. Group Horse, Dolphin, Frog, Sheep, Crocodile, Squirrel, Whale, Earthworm, Pigeon, And Tortoise By Habitat.
Aquatic animals include dolphin and whale, while terrestrial animals include horse, sheep, squirrel, earthworm, and pigeon. Frog, crocodile, and tortoise use both habitats.
- Aquatic: dolphin, whale
- Terrestrial: horse, sheep, squirrel, earthworm, pigeon
- Both: frog, crocodile, tortoise
Q3. What Type Of Root Does Radish Have?
Radish has a taproot. Its leaves would show reticulate venation.
Radish stores food in a thickened root. This root grows as one main root.
Q4. How Are Mountain Goats Different From Goats In Plains?
Mountain goats have features suited to rocky and steep regions. Goats in plains suit grassy land movement.
Mountain goats need strong footing on slopes. Plain goats move on flatter ground.
Q5. What Questions Can Sanjay Ask To Check If Hibiscus Is A Shrub?
Sanjay can ask about height, stem hardness, and branching near the ground. These features identify shrubs.
He can ask whether hibiscus has many woody stems. He can also check if branches start close to the ground.
Class 6 Science Important Links