Vidaara.orgClass 4 · Mathematics
CodeVID-M4-WS
Adaptations: Built to Survive — Practice Worksheet
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Choose the correct option (A, B, C or D) for each question.
- The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each)
15 × 1 = 15 marks
1.
Why do mangrove plants near the sea have roots that stick up out of the mud?
- A.To get air where the mud has little
- B.To catch fish
- C.To make flowers
- D.To swim
2.
Desert plants often have very long roots to…
- A.Climb walls
- B.Hold birds
- C.Make shade
- D.Reach water deep underground
3.
A duck's feathers stay dry because they are covered with natural…
- A.Oil
- B.Sand
- C.Wax paper
- D.Glass
4.
Some animals sleep through the cold winter. This is called…
- A.Camouflage
- B.Migration
- C.Hibernation
- D.Swimming
5.
Fish swim using their fins and…
- A.Hands
- B.Legs
- C.Wings
- D.Tail
6.
A camel's long eyelashes keep out…
- A.Food
- B.Water
- C.Snow
- D.Sand and dust
7.
White fur helps a polar bear to…
- A.Stay cool
- B.Hide in the snow
- C.Swim faster
- D.Fly
8.
Adaptations usually develop in living things over a very…
- A.Single day
- B.Long time
- C.Minute
- D.Second
9.
A layer of fat under the skin that keeps cold animals warm is called…
- A.Shell
- B.Bone
- C.Hair
- D.Blubber
10.
A fish's body shape is best described as…
- A.Square
- B.Streamlined (smooth and pointed)
- C.Flat like paper
- D.Round like a ball
11.
The desert is a very ___ place.
- A.Icy
- B.Cold and wet
- C.Hot and dry
- D.Watery
12.
A body colour that helps an animal hide is called…
- A.Camouflage
- B.A costume
- C.A shadow
- D.A toy
13.
Many desert animals come out at night because the day is too…
- A.Dark
- B.Cold
- C.Hot
- D.Wet
14.
Plants on snowy mountains are often shaped like a cone so snow can…
- A.Stay forever
- B.Pile up
- C.Slide off easily
- D.Turn to rain
15.
A special body part or habit that helps a living thing survive is called an…
- A.Adaptation
- B.Accident
- C.Holiday
- D.Game
Section B — Challenge / Olympiad (2 marks each)
5 × 2 = 10 marks
16.
A fish that floats up and down by filling a tiny air bag inside is using its…
- A.Eyes
- B.Tail only
- C.Air bladder
- D.Scales
17.
A behaviour that helps survival, like birds flying to warm lands in winter, is called…
- A.Migration
- B.Camouflage
- C.Dissolving
- D.Reflection
18.
Why is a camel's thick fur on top but thin underneath a clever desert design?
- A.Top fur blocks Sun heat; thin belly lets heat escape
- B.It looks nice
- C.It stores water
- D.It helps swimming
19.
A cactus does most of its food-making in its green stem because it has almost no…
- A.Leaves
- B.Roots
- C.Flowers
- D.Water
20.
Penguins huddle together in big groups in the cold mainly to…
- A.Find food
- B.Play games
- C.Share warmth and stay warm
- D.Look bigger
Answer Key
Section A — Multiple Choice (1 mark each)
- (A) To get air where the mud has little
- (D) Reach water deep underground
- (A) Oil
- (C) Hibernation
- (D) Tail
- (D) Sand and dust
- (B) Hide in the snow
- (B) Long time
- (D) Blubber
- (B) Streamlined (smooth and pointed)
- (C) Hot and dry
- (A) Camouflage
- (C) Hot
- (C) Slide off easily
- (A) Adaptation
Section B — Challenge / Olympiad (2 marks each)
- (C) Air bladder
- (A) Migration
- (A) Top fur blocks Sun heat; thin belly lets heat escape
- (A) Leaves
- (C) Share warmth and stay warm
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