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Read the given statements and select the correct option.
Statement 1 : Forests are known as "green lungs".
Statement 2 : Plants absorb CO₂ from the atmosphere and release O₂, which purify the air. This helps to maintain the balance between O₂ and CO₂ in the atmosphere.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Both statements 1 and 2 are false.

Match the labelled parts (i), (ii), (iii) and (iv) in the given figure with their functions a - e.

a. Allows selected substances to enter or leave the cell.
b. Produces energy for the cell
c. Protein synthesis
d. Responsible for storage and secretion of substances from the cell.
e. Cellular digestion

A i - d, ii - e, iii - c, iv - a
B i - a, ii - b, iii - d, iv - c
C i - c, ii - a, iii - e, iv - d
D i - b, ii - d, iii - e, iv - a

Read the given paragraph.
X is a process accomplished by air that helps in increasing number of plants and their widespread distribution whereas Y is a process aided by air that helps in food formation by autotrophs for its continuous supply to all living organisms. Identify X and Y and select the correct option.

A X could be the process of transfer of pollen grains from anther of flower of one plant to stigma of flower of another plant.
B Seeds subjected to X have hairy or winged structures and are light weighted.
C Y is performed by all green plants and cyanobacteria and is the only process on Earth that adds oxygen to air.
D All of these

The properties below describe which of the following fabrics?

• Cool to wear

• Absorbs water easily

• Soft to touch

• Creases easily

• Can be washed and ironed easily

(A) Cotton

(B) Silk

(C) Wool

Read the given statements and select the correct option.
Statement 1 : Moon is a very silent place.
Statement 2 : Air is present on the Moon.

ABoth statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
CStatement 1 is correct but statement 2 is incorrect.
DBoth statements 1 and 2 are incorrect.

Match the given columns and select the correct option.


A 1-c, d; 2-b; 3-a
B 1-d; 2-a; 3-b, c
C 1-b, c; 2-a; 3-a, d
D 1-b, c, d; 2-b; 3-a

Five children made the following statements about birds.
Ashok : All birds can fly.
Beena : All birds have a beak.
Ashu : All birds have a backbone.
Shuchi : All birds have an outer covering of feathers.
Siddhi : Most birds lay eggs, while some give birth to their young ones.
Whose statements about birds are true?

AAshok, Beena and Ashu only
BBeena, Ashu and Shuchi only
CAshok, Beena, Shuchi and Siddhi only
DBeena, Ashu, Shuchi and Ashok only

Which of the following is an example of a solution in which solute is a liquid and solvent is a solid?

ASoft drink
BAntifreeze
CMercury in gold
DBrass

The diagram below shows a gear system that involves the use of chains like in the bicycle. Arrows are drawn to show the direction in which each of the gears will turn. Which among the following arrow(s) is/are wrongly marked?


A2 only
B1 and 4 only
C4 only
D2 and 3 only

Study the given flow chart and select the correct option.


A P could be almond oil whereas Q could be water vapour.
B Q could be water vapour whereas S could be water.
C R could be wood whereas S could be glass.
D P could be glass whereas Q could be mustard oil.