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📘 Study MCQs
Q1. What is meant by diversity in the living world?
• Only animals living on land
• Different kinds of living organisms
• Only green plants
• Only humans
Answer: Different kinds of living organisms
Diversity in the living world means the variety of living organisms present on Earth.
It includes different kinds of plants, animals, and microorganisms.
These living beings differ in shape, size, colour, habitat, and habits.
Q2. What is biodiversity?
• Study of plants only
• Variety of life on Earth
• Only forest animals
• Only aquatic plants
Answer: Variety of life on Earth
Biodiversity means the variety of plants, animals, and other living organisms found on Earth.
It includes life in forests, oceans, deserts, and all other habitats.
Greater biodiversity helps maintain balance in nature.
Q3. What is a habitat?
• A place where machines work
• A place where plants and animals live
• A type of plant
• A kind of animal
Answer: A place where plants and animals live
A habitat is the natural home of an organism.
It provides food, water, air, and shelter.
Different organisms live in different habitats according to their needs.
Q4. Which of the following is a terrestrial habitat?
• Pond
• Sea
• Forest
• River
Answer: Forest
A terrestrial habitat is found on land.
Forests, deserts, and grasslands are land habitats.
Plants and animals living there are adapted to life on land.
Q5. Which animals live in water?
• Terrestrial animals
• Aquatic animals
• Aerial animals
• Desert animals
Answer: Aquatic animals
Aquatic animals live in water bodies like rivers, lakes, and oceans.
They have special features like fins and gills.
These adaptations help them swim and breathe in water.
Q6. What are amphibians?
• Animals that live only on land
• Animals that live only in water
• Animals that live both on land and water
• Flying animals
Answer: Animals that live both on land and water
Amphibians can live both on land and in water.
Examples include frogs and toads.
They usually live in water during early life and on land as adults.
Q7. Which plant has parallel venation?
• Pea
• Mustard
• Wheat
• Bean
Answer: Wheat
Parallel venation means veins run parallel to each other.
It is seen in monocot plants.
Wheat leaves show clear parallel lines.
Q8. What is venation?
• Arrangement of flowers
• Arrangement of veins in a leaf
• Arrangement of roots
• Arrangement of seeds
Answer: Arrangement of veins in a leaf
Venation refers to the pattern of veins in the leaf.
Veins help transport water and food.
Venation can be parallel or reticulate.
Q9. What is reticulate venation?
• Veins are parallel
• Veins form a net-like pattern
• Veins are absent
• Veins are straight
Answer: Veins form a net-like pattern
Reticulate venation forms a network of veins.
It is commonly seen in dicot plants.
Examples include mango and pea leaves.
Q10. Which plant shows reticulate venation?
• Grass
• Wheat
• Rice
• Mango
Answer: Mango
Mango leaves have veins forming a net-like pattern.
This type of venation is called reticulate venation.
It helps provide strength to the leaf.
Q11. What is a monocot plant?
• Plant with two cotyledons
• Plant with one cotyledon
• Plant without seeds
• Plant without roots
Answer: Plant with one cotyledon
Monocot plants have only one cotyledon in the seed.
They usually have parallel venation and fibrous roots.
Examples include rice and wheat.
Q12. What is a dicot plant?
• Plant with one cotyledon
• Plant with two cotyledons
• Plant without flowers
• Plant without leaves
Answer: Plant with two cotyledons
Dicot plants have two cotyledons in their seeds.
They usually show reticulate venation.
They also have taproot systems.
Q13. Which plant is a dicot?
• Wheat
• Rice
• Pea
• Grass
Answer: Pea
Pea seeds have two cotyledons.
Its leaves show reticulate venation.
Hence, pea is a dicot plant.
Q14. What is a taproot?
• Cluster of small roots
• One main root with branches
• Roots growing from stem
• Roots growing in water
Answer: One main root with branches
Taproot system has one main root growing deep into the soil.
Smaller roots grow from it.
It helps in strong anchorage and absorption of water.
Q15. Which plant has a taproot system?
• Wheat
• Rice
• Mustard
• Grass
Answer: Mustard
Mustard is a dicot plant.
Dicots usually have taproot systems.
The main root grows deep into the soil.
Q16. What is a fibrous root?
• Single main root
• Group of thin roots
• Roots from leaves
• Roots from flowers
Answer: Group of thin roots
Fibrous roots consist of many thin roots of similar size.
There is no main root.
They help hold the plant firmly in the soil.
Q17. Which plant has fibrous roots?
• Pea
• Mustard
• Wheat
• Mango
Answer: Wheat
Wheat is a monocot plant.
Monocots have fibrous root systems.
These roots spread near the soil surface.
Q18. What are herbs?
• Tall woody plants
• Small plants with soft stems
• Plants without flowers
• Plants without roots
Answer: Small plants with soft stems
Herbs are small plants with green and soft stems.
They usually live for a short time.
Examples include mint and spinach.
Q19. Which is an example of a herb?
• Neem
• Mango
• Mint
• Rose
Answer: Mint
Mint has a soft green stem.
It is small in size.
Therefore, it is a herb.
Q20. What are shrubs?
• Very tall trees
• Small plants with soft stems
• Medium-sized woody plants
• Climbers
Answer: Medium-sized woody plants
Shrubs are medium-sized plants.
They have hard and woody stems.
They branch near the ground.
Q21. Which is a shrub?
• Grass
• Rose
• Wheat
• Mint
Answer: Rose
Rose plants have woody stems.
They are medium in height.
Hence, they are shrubs.
Q22. What is adaptation?
• Movement of plants
• Special features to survive
• Growth of roots
• Photosynthesis
Answer: Special features to survive
Adaptation refers to special features that help organisms survive.
These features suit their habitat.
They help in getting food, protection, and shelter.
Q23. Why do fish have gills?
• To walk
• To fly
• To breathe in water
• To eat plants
Answer: To breathe in water
Fish live in water.
Gills help them take oxygen dissolved in water.
This is an adaptation for aquatic life.
Q24. Which adaptation helps birds to fly?
• Gills
• Wings
• Roots
• Fins
Answer: Wings
Birds have wings.
Wings help them fly in the air.
This adaptation helps them escape enemies and find food.
Q25. What kind of habitat is a pond?
• Terrestrial
• Aquatic
• Desert
• Mountain
Answer: Aquatic
A pond contains water.
Plants and animals living there are aquatic.
It is an aquatic habitat.
Q26. Which plant lives in water?
• Cactus
• Lotus
• Neem
• Rose
Answer: Lotus
Lotus grows in ponds and lakes.
It has long stems and broad leaves.
These features help it live in water.
Q27. Which animal is amphibian?
• Fish
• Snake
• Frog
• Cow
Answer: Frog
Frogs live both in water and on land.
They lay eggs in water.
Thus, frogs are amphibians.
Q28. What helps roots absorb water?
• Flowers
• Leaves
• Root hairs
• Seeds
Answer: Root hairs
Root hairs increase surface area.
They absorb water and minerals from soil.
This helps the plant grow properly.
Q29. Why are roots important?
• For breathing
• For anchoring and absorption
• For making food
• For reproduction
Answer: For anchoring and absorption
Roots hold the plant firmly in soil.
They absorb water and minerals.
They are essential for plant survival.
Q30. Which venation is found in banana leaf?
• Reticulate
• Parallel
• Spiral
• Circular
Answer: Parallel
Banana is a monocot plant.
Monocots show parallel venation.
Its leaf veins run parallel.
Q31. Which root system is found in grass?
• Taproot
• Fibrous root
• Adventitious root
• Aerial root
Answer: Fibrous root
Grass is a monocot plant.
It has many thin roots of equal size.
This type is fibrous root system.
Q32. What do leaves mainly do?
• Absorb water
• Make food
• Anchor plant
• Store seeds
Answer: Make food
Leaves prepare food by photosynthesis.
They use sunlight, water, and carbon dioxide.
This food helps the plant grow.
Q33. Which part of plant makes food?
• Root
• Stem
• Leaf
• Flower
Answer: Leaf
Leaves contain chlorophyll.
They trap sunlight.
Thus, they prepare food for the plant.
Q34. What kind of plants are wheat and rice?
• Dicot
• Monocot
• Shrub
• Tree
Answer: Monocot
Wheat and rice have one cotyledon.
They have parallel venation.
So, they are monocot plants.
Q35. What helps aquatic plants float?
• Hard stems
• Air spaces
• Deep roots
• Woody trunks
Answer: Air spaces
Aquatic plants have air-filled spaces.
These help them float on water.
Floating helps them get sunlight.
Q36. Which is a land habitat animal?
• Fish
• Whale
• Camel
• Octopus
Answer: Camel
Camels live on land, especially deserts.
They are adapted to dry conditions.
Thus, they are terrestrial animals.
Q37. Why do camels have long legs?
• To swim
• To fly
• To walk on hot sand
• To climb trees
Answer: To walk on hot sand
Long legs keep camel’s body away from hot sand.
This prevents heat from reaching the body.
It is an important desert adaptation.
Q38. What type of venation is in pea leaf?
• Parallel
• Reticulate
• No venation
• Straight venation
Answer: Reticulate
Pea is a dicot plant.
Dicots show reticulate venation.
Veins form a network in leaves.
Q39. Which plants are called trees?
• Small soft plants
• Medium woody plants
• Tall woody plants
• Plants without stem
Answer: Tall woody plants
Trees are tall plants.
They have strong woody stems.
They live for many years.
Q40. Which is an example of a tree?
• Mint
• Rose
• Mango
• Wheat
Answer: Mango
Mango has a thick woody trunk.
It grows tall.
Hence, it is a tree.
Q41. What is the function of stem?
• Make seeds
• Transport water and food
• Absorb sunlight
• Anchor plant
Answer: Transport water and food
Stem carries water from roots to leaves.
It also transports food to other parts.
Thus, stem supports the plant.
Q42. Which root system gives strong support?
• Fibrous root
• Taproot
• Adventitious root
• Aerial root
Answer: Taproot
Taproots grow deep into the soil.
They provide strong anchorage.
They help tall plants stand firm.
Q43. Which plants grow in deserts?
• Hydrophytes
• Mesophytes
• Xerophytes
• Aquatic plants
Answer: Xerophytes
Xerophytes are plants of dry areas.
They store water and reduce water loss.
Cactus is a common example.
Q44. Why do desert plants have spines?
• To make food
• To reduce water loss
• To absorb water
• To attract animals
Answer: To reduce water loss
Spines reduce surface area.
This reduces water loss.
It helps plants survive in deserts.
Q45. Which habitat has very little water?
• Forest
• Pond
• Desert
• River
Answer: Desert
Deserts receive very little rainfall.
Plants and animals have special adaptations.
Water conservation is very important there.
Q46. Which feature helps frogs swim?
• Wings
• Webbed feet
• Sharp claws
• Fur
Answer: Webbed feet
Frogs have webbed feet.
These help them swim easily in water.
It is an aquatic adaptation.
Q47. Which animals breathe through skin?
• Birds
• Fish
• Frogs
• Cows
Answer: Frogs
Frogs breathe through moist skin in water.
They also use lungs on land.
This helps them live in two habitats.
Q48. Which plants have fibrous roots and parallel venation?
• Dicots
• Monocots
• Shrubs
• Trees
Answer: Monocots
Monocots have fibrous roots.
They show parallel venation.
Examples include wheat and rice.
Q49. Why is biodiversity important?
• For decoration
• For balance of nature
• For pollution
• For noise
Answer: For balance of nature
Biodiversity maintains natural balance.
Each organism plays an important role.
Loss of biodiversity affects life on Earth.
Q50. Which of the following is living?
• Stone
• Water
• Plant
• Air
Answer: Plant
Plants grow and reproduce.
They respond to their surroundings.
Thus, plants are living organisms.