Science
Q1.
Animals breathe in _____ .
A
Carbon dioxide
B
Nitrogen
C
Oxygen
D
Water
Q2.
The process of removal of waste from body is called
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Q3.
Fill in the blank: Living organisms reproduce ___ kinds.
A
Different
B
Similar
Q4.
Which of the following is not an example of terrestrial habitat?
A
Coasts
B
Mountains
C
Ponds
D
Grassland
Q5.
Why is reproduction important for organisms?
A
It is for the species to not become extinct
B
For making healthy life
C
For better excretion system
D
For better adaptive capabilities
Q6.
Explain the term 'respiration'.
A
The process of reproducing of new individuals of their kind
B
The process of inhaling and exhaling, which also leads to production of energy.
C
The process of removal of unwanted substances from body
D
Evolutionary process whereby an organism becomes better able to live in its habitat or habitats
Q7.
What are the adaptive features of a lion that help it in hunting?
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Q8.
Why does a fish die when kept outside of water?
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Q9.
Explain why many mountain trees are cone-shaped having sloping branches.
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Q10.
Why do deer have eyes on the side of their heads?
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Q11.
Write the adaptation in aquatic plants due to which submerged leaves can bend in the flowing water.
A
Leaves are narrow and ribbon-like
B
Long and wide ribbon-like
C
Stems/stalks of leaves are long, hollow and light.
D
None of these
Q12.
Why do desert snakes burrow deep into the sand during the day?
A
Deeper layers of sand are cooler so they burrow deep into the sand to stay away from the daytime heat.
B
Deeper layers of sand are hotter so they burrow deep into the sand to stay away from the daytime heat.
C
Deeper layers of sand have more insects so they burrow deep into the sand to stay find them.
D
None of these
Q13.
Mention one adaptation present in dolphins and whales to breathe in air when they swim near the surface of water.
A
Blowholes
B
Thin skin
C
Webbed feet
D
None of these
Q14.
Some desert plants have very small leaves whereas some others have only spines. How does this benefit the plants?
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Q15.
State the type of plant that exhibits thick waxy stem.
A
Aquatic plant
B
Desert plant
C
Mountain plant
D
None of these
Q16.
State the type of plant that exhibits short roots.
A
Aquatic plant
B
Desert plant
C
Mountain plant
D
None of these
Q17.
State the type of plant that exhibits hollow stem.
A
Aquatic plant
B
Desert plant
C
Mountain plant
D
None of these
Q18.
State the type of plant that exhibits sloping branches.
A
Aquatic plant
B
Desert plant
C
Mountainous plant
D
None of these
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Answers
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1. c, oxygen
2. excretion
3. b, similiar
4. c, ponds
5. a, for the species to not be extinct
6. b, the process of inhaling and exhaling..
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