Diversity in the Living World
Grade 6 Science MCQs
Basic Concepts (20 Questions)
1. What is biodiversity?
A) Study of living things
B) Variety of plants and animals in a region
C) Only plants in an area
D) Only animals in an area
B) Variety of plants and animals in a region
C) Only plants in an area
D) Only animals in an area
2. Who was the expert in mimicking bird calls mentioned in the chapter?
A) Dr. Raghu
B) Madam Sulekha
C) Maniram chacha
D) Alex
B) Madam Sulekha
C) Maniram chacha
D) Alex
3. What should students carry during a nature walk according to the chapter?
A) Notebook, pen and water bottle
B) Camera and snacks
C) Mobile phone and headphones
D) Toys and games
B) Camera and snacks
C) Mobile phone and headphones
D) Toys and games
4. What is the pattern of veins on leaves called?
A) Photosynthesis
B) Venation
C) Transpiration
D) Germination
B) Venation
C) Transpiration
D) Germination
5. Which type of venation do hibiscus leaves have?
A) Parallel
B) Reticulate
C) Circular
D) Spiral
B) Reticulate
C) Circular
D) Spiral
6. What type of roots do grasses typically have?
A) Taproot
B) Fibrous roots
C) Aerial roots
D) Storage roots
B) Fibrous roots
C) Aerial roots
D) Storage roots
7. Plants with seeds having two cotyledons are called:
A) Monocots
B) Dicots
C) Tricots
D) Seedless
B) Dicots
C) Tricots
D) Seedless
8. Which of these is an example of a shrub?
A) Mango tree
B) Rose plant
C) Tomato plant
D) Grass
B) Rose plant
C) Tomato plant
D) Grass
9. What helps fish move in water?
A) Legs
B) Wings
C) Fins
D) Hands
B) Wings
C) Fins
D) Hands
10. What is the place where plants and animals live called?
A) Ecosystem
B) Habitat
C) Environment
D) Territory
B) Habitat
C) Environment
D) Territory
11. Which of these is a terrestrial habitat?
A) Ocean
B) River
C) Forest
D) Lake
B) River
C) Forest
D) Lake
12. What are the special features that help organisms survive in their environment called?
A) Variations
B) Adaptations
C) Modifications
D) Evolutions
B) Adaptations
C) Modifications
D) Evolutions
13. Which plant has thick fleshy stems to store water?
A) Rose
B) Cactus
C) Grass
D) Hibiscus
B) Cactus
C) Grass
D) Hibiscus
14. What shape do deodar trees typically have?
A) Round
B) Conical
C) Square
D) Flat
B) Conical
C) Square
D) Flat
15. How many humps does a camel in the hot desert typically have?
A) None
B) One
C) Two
D) Three
B) One
C) Two
D) Three
16. What is the main purpose of grouping plants and animals?
A) To make them look neat
B) To understand and study them better
C) To count them easily
D) To keep them separate
B) To understand and study them better
C) To count them easily
D) To keep them separate
17. Which of these is NOT a basis for grouping plants?
A) Height
B) Stem type
C) Leaf venation
D) Color of flowers
B) Stem type
C) Leaf venation
D) Color of flowers
18. What type of plants need support to climb?
A) Herbs
B) Shrubs
C) Climbers
D) Trees
B) Shrubs
C) Climbers
D) Trees
19. Which of these animals is an amphibian?
A) Fish
B) Frog
C) Cow
D) Pigeon
B) Frog
C) Cow
D) Pigeon
20. What happens when habitats are damaged?
A) Plants and animals lose their homes
B) More biodiversity is created
C) Animals become stronger
D) Plants grow faster
B) More biodiversity is created
C) Animals become stronger
D) Plants grow faster
Intermediate Level (15 Questions)
21. What is the relationship between leaf venation and root type in plants?
A) No relationship
B) Reticulate venation with taproot, parallel with fibrous
C) Parallel venation with taproot, reticulate with fibrous
D) Depends on plant height
B) Reticulate venation with taproot, parallel with fibrous
C) Parallel venation with taproot, reticulate with fibrous
D) Depends on plant height
22. Why do deodar trees have conical shape and sloping branches?
A) To attract animals
B) To let snow slide off easily
C) To grow taller
D) To store more water
B) To let snow slide off easily
C) To grow taller
D) To store more water
23. How are camels adapted to live in hot deserts?
A) Long legs to walk on sand
B) Store food in humps
C) Don't lose much water
D) All of the above
B) Store food in humps
C) Don't lose much water
D) All of the above
24. What is the difference between monocot and dicot seeds?
A) Number of cotyledons
B) Size of seeds
C) Color of seeds
D) Shape of seeds
B) Size of seeds
C) Color of seeds
D) Shape of seeds
25. Why are sacred groves important?
A) They protect biodiversity
B) They are tourist spots
C) They provide timber
D) They are good for farming
B) They are tourist spots
C) They provide timber
D) They are good for farming
26. What was Janaki Ammal's contribution to biodiversity?
A) Documented and preserved India's plant biodiversity
B) Studied animal behavior
C) Invented new plants
D) Worked only with crops
B) Studied animal behavior
C) Invented new plants
D) Worked only with crops
27. Why was the Silent Valley movement important?
A) It preserved a moist evergreen forest
B) It built a hydroelectric dam
C) It increased tourism
D) It provided more farmland
B) It built a hydroelectric dam
C) It increased tourism
D) It provided more farmland
28. How do animals help in spreading seeds?
A) By eating fruits and dispersing seeds
B) By planting them deliberately
C) By watering plants
D) By protecting them from insects
B) By planting them deliberately
C) By watering plants
D) By protecting them from insects
29. What is the main reason for different biodiversity in different regions?
A) Different environmental conditions
B) Human preferences
C) Government policies
D) Random distribution
B) Human preferences
C) Government policies
D) Random distribution
30. Why do camels in cold deserts have two humps?
A) To store more food for winter scarcity
B) To look different
C) To attract mates
D) To balance while walking
B) To look different
C) To attract mates
D) To balance while walking
31. What was Salim Ali's important contribution?
A) Documented bird diversity and conserved habitats
B) Studied only migratory birds
C) Worked only with captive birds
D) Focused only on bird anatomy
B) Studied only migratory birds
C) Worked only with captive birds
D) Focused only on bird anatomy
32. Why do cacti have thick fleshy stems?
A) To store water in desert conditions
B) To attract pollinators
C) To protect from animals
D) To grow faster
B) To attract pollinators
C) To protect from animals
D) To grow faster
33. What is the relationship between plants and animals in biodiversity?
A) They are dependent on each other
B) They compete with each other
C) They don't interact
D) Animals control plants
B) They compete with each other
C) They don't interact
D) Animals control plants
34. Why do mountain goats have different features than plains goats?
A) Adaptations to mountain environment
B) Different species
C) Different food habits
D) Genetic mutations
B) Different species
C) Different food habits
D) Genetic mutations
35. What was the purpose of Project Tiger?
A) Protect declining Bengal Tiger population
B) Study tiger behavior
C) Create tiger zoos
D) Domesticate tigers
B) Study tiger behavior
C) Create tiger zoos
D) Domesticate tigers
Advanced Level (15 Questions)
36. If a plant has parallel venation, what type of root system would it most likely have?
A) Taproot
B) Fibrous roots
C) Aerial roots
D) Adventitious roots
B) Fibrous roots
C) Aerial roots
D) Adventitious roots
37. Why might rhododendrons in Nilgiris be shorter than those in Sikkim?
A) Adaptations to heavy winds on mountain tops
B) Different soil quality
C) Less rainfall
D) Human interference
B) Different soil quality
C) Less rainfall
D) Human interference
38. What advantage do wide hooves give to camels in hot deserts?
A) Prevent sinking in sand
B) Help in swimming
C) Better for climbing
D) More surface to absorb water
B) Help in swimming
C) Better for climbing
D) More surface to absorb water
39. How does the biodiversity register help in conservation?
A) Documents local biodiversity for protection
B) Lists animals for hunting
C) Records plant growth rates
D) Measures pollution levels
B) Lists animals for hunting
C) Records plant growth rates
D) Measures pollution levels
40. Why are community-protected sacred groves effective for conservation?
A) Local involvement ensures better protection
B) They are fenced properly
C) Government monitors them closely
D) They are far from human settlements
B) They are fenced properly
C) Government monitors them closely
D) They are far from human settlements
41. What would happen if all trees in a forest are cut down?
A) Loss of habitat for many organisms
B) More space for animals
C) Better growth of grass
D) Increased biodiversity
B) More space for animals
C) Better growth of grass
D) Increased biodiversity
42. Why is it important to protect biodiversity?
A) Maintains ecological balance
B) Provides resources for humans
C) Ensures survival of species
D) All of the above
B) Provides resources for humans
C) Ensures survival of species
D) All of the above
43. How does the loss of habitat affect biodiversity?
A) Reduces number of species
B) Changes ecosystem balance
C) Affects food chains
D) All of the above
B) Changes ecosystem balance
C) Affects food chains
D) All of the above
44. What is the significance of the Cheetah Reintroduction Project?
A) Restores cheetah population in India
B) Creates zoo exhibits
C) Studies cheetah anatomy
D) Domesticates cheetahs
B) Creates zoo exhibits
C) Studies cheetah anatomy
D) Domesticates cheetahs
45. Why do ducks have webbed feet while pigeons don't?
A) Adaptation to aquatic environment
B) Different evolutionary paths
C) Random variation
D) Dietary differences
B) Different evolutionary paths
C) Random variation
D) Dietary differences
46. How can students contribute to biodiversity conservation?
A) Creating school biodiversity registers
B) Planting native species
C) Learning about local ecosystems
D) All of the above
B) Planting native species
C) Learning about local ecosystems
D) All of the above
47. What is the main difference between terrestrial and aquatic habitats?
A) Land vs water-based environments
B) Temperature variations
C) Types of plants present
D) Human interference levels
B) Temperature variations
C) Types of plants present
D) Human interference levels
48. Why do plants in the same species show variations in different regions?
A) Adaptations to local conditions
B) Genetic mutations
C) Human cultivation methods
D) Random growth patterns
B) Genetic mutations
C) Human cultivation methods
D) Random growth patterns
49. What is the ecological importance of the Great Indian Bustard conservation?
A) Maintains grassland ecosystem balance
B) Attracts tourists
C) Provides feathers for industry
D) Controls rodent population
B) Attracts tourists
C) Provides feathers for industry
D) Controls rodent population
50. How does the scientific documentation of biodiversity help in its protection?
A) Provides baseline data for conservation
B) Identifies endangered species
C) Helps in habitat management
D) All of the above
B) Identifies endangered species
C) Helps in habitat management
D) All of the above
Answer Key
1
B
Easy
2
C
Easy
3
A
Easy
4
B
Easy
5
B
Easy
6
B
Easy
7
B
Easy
8
B
Easy
9
C
Easy
10
B
Easy
11
C
Easy
12
B
Easy
13
B
Easy
14
B
Easy
15
B
Easy
16
B
Easy
17
D
Easy
18
C
Easy
19
B
Easy
20
A
Easy
21
B
Medium
22
B
Medium
23
D
Medium
24
A
Medium
25
A
Medium
26
A
Medium
27
A
Medium
28
A
Medium
29
A
Medium
30
A
Medium
31
A
Medium
32
A
Medium
33
A
Medium
34
A
Medium
35
A
Medium
36
B
Hard
37
A
Hard
38
A
Hard
39
A
Hard
40
A
Hard
41
A
Hard
42
D
Hard
43
D
Hard
44
A
Hard
45
A
Hard
46
D
Hard
47
A
Hard
48
A
Hard
49
A
Hard
50
D
Hard
