The following 20 Multiple Choice Questions (MCQ) are based on
Chapter 2: Diversity in the Living World from the NCERT Class 6
Science textbook Curiosity. Each question has four options - select the
best answer and click to check.
Instructions: Read each question carefully. Choose the most
appropriate option from (a), (b), (c), or (d). Click
Show Answer to reveal the correct answer with explanation.
Multiple Choice Questions
1Biodiversity means the:
(a) Variety of living organisms
(b) Number of rocks
(c) Sameness of all plants
(d) Amount of rainfall
(a) is correct
The living world contains many kinds of plants, animals and other organisms.
2A nature walk should involve:
(a) Collecting every animal
(b) Damaging plants
(c) Making loud noises near nests
(d) Careful observation without disturbing organisms
(d) is correct
Respectful observation protects living things and their habitats.
3Grouping organisms helps us to:
(a) Ignore characteristics
(b) Remove biodiversity
(c) Study similarities and differences systematically
(d) Make every organism identical
(c) is correct
Classification organises a large variety into manageable groups.
4A herb generally has a:
(a) Stem made of stone
(b) Soft green stem
(c) Thick woody trunk
(d) Creeping root only
(b) is correct
Herbs are usually small plants with tender stems.
5A shrub is usually:
(a) Medium-sized with woody branches near the base
(b) A plant with one tall trunk
(c) A non-living object
(d) Always a climber
(a) is correct
Shrubs branch close to the ground and have woody stems.
6A tree commonly has:
(a) Only a soft stem
(b) No branches
(c) No roots
(d) A tall woody trunk
(d) is correct
Trees are generally tall perennial plants supported by a main trunk.
7Plants with weak stems that spread along the ground are:
(a) Shrubs
(b) Herbs with trunks
(c) Creepers
(d) Trees
(c) is correct
Creepers cannot support upright growth and trail over the ground.
8A climber grows upward by:
(a) Floating in air
(b) Taking support from another object
(c) Developing a thick trunk immediately
(d) Growing without a stem
(b) is correct
Weak-stemmed climbers use tendrils or twining stems for support.
9Reticulate venation has veins arranged like a:
(a) Network
(b) Set of parallel lines
(c) Single dot
(d) Circle only
(a) is correct
Branching veins form a net-like pattern across the leaf.
10Parallel venation is common in:
(a) Every dicot plant
(b) Animals
(c) Fungi only
(d) Many monocot plants
(d) is correct
Grass and maize leaves show veins running roughly parallel.
11A taproot system has:
(a) No root
(b) Only aerial leaves
(c) One main root with side branches
(d) Many similarly sized roots from the stem base
(c) is correct
The primary root remains prominent and gives off lateral roots.
12Fibrous roots consist of:
(a) One underground fruit
(b) Many similar roots arising near the stem base
(c) One thick main root only
(d) A network of leaf veins
(b) is correct
Grasses and many monocots have bundles of fine roots.
13A plant with reticulate venation commonly has:
(a) A taproot
(b) Fibrous roots
(c) No roots
(d) Webbed feet
(a) is correct
The chapter links reticulate venation with dicot seeds and taproots.
14A plant with parallel venation commonly has:
(a) A taproot
(b) No stem
(c) A woody trunk always
(d) Fibrous roots
(d) is correct
Parallel-veined monocots usually have fibrous root systems.
15Which animal feature is an adaptation for swimming?
(a) Long ears of a hare
(b) Hooves of a goat
(c) Webbed feet of a duck
(d) Claws of a climbing bird only
(c) is correct
Webbing pushes against a larger area of water.
16A habitat is:
(a) A measuring unit
(b) The place where an organism lives
(c) Only a zoo cage
(d) A group of unrelated objects
(b) is correct
A habitat provides suitable food, water, shelter and conditions.
17Mountain goats differ from goats of plains mainly because:
(a) They have adaptations for different habitats
(b) They are not living organisms
(c) All goats are identical
(d) Habitat has no effect
(a) is correct
Body covering and structures can help survival in cold, steep environments.
18Which is an aquatic habitat?
(a) Desert
(b) Grassland
(c) Mountain slope
(d) Pond
(d) is correct
A pond is a water-based environment for aquatic organisms.
19Deforestation threatens biodiversity by:
(a) Increasing every population
(b) Stopping all human activity
(c) Destroying and fragmenting habitats
(d) Creating more natural shelter
(c) is correct
Organisms may lose food, breeding sites and safe movement routes.
20One way to protect biodiversity is to:
(a) Release waste into ponds
(b) Conserve habitats and use resources responsibly
(c) Cut all forests
(d) Disturb nesting animals
(b) is correct
Protecting ecosystems allows diverse species to survive.
