Life Processes Test

Result

Life Processes Test - 2

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Question 1
1 / -0

Directions For Questions

Read the following statements and select the correct option accordingly.

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Statement 1: Plants absorb water and minerals by the roots.
Statement 2: The outer wall of roots have numerous projections called root hair.

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.

Solution

Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. The root hair increase the surface area of the root for the absorption of water and mineral nutrients dissolved in water.
Question 2
1 / -0

In kidney, glomerulus is involved in

A
reabsorption of salts

B
urine collection

C
urine formation by blood filtration

D
All of the above

Solution

Blood enters into the Bowman's capsule. It is a cup-shaped unit with a cluster of capillaries known as glomeruli.
From capillaries, which form glomeruli, water and solutes filter out into the space made by Bowman's capsule. Hence, glomerulus is involved in filtration of blood.
Question 3
1 / -0

Which of the following statements is/are false?

a. Uric acid increases in muscle cells when they are lacking oxygen.
b. The breathing and respiration in woody stem of a plant takes place through the lenticels.
c. Pyruvate can be converted into ethanol and carbon dioxide by yeast.

A
Only a

B
Only a and b

C
Only b

D
Only b and c

Solution

This statement is false. Lactic acid increases in muscle cells when they are lacking oxygen.
Question 4
1 / -0

Seema is a professional singer. Due to continuous practice, she starts to lose her voice. She goes to a doctor who tells her that there is a problem in the

A
larynx

B
pharynx

C
trachea

D
alveoli

Solution

The voice box, or larynx, is the portion of the respiratory (breathing) tract containing the vocal cords, which produce sound. Due to continuous use of her voice box, Seema has started to lose her voice.
Question 5
1 / -0

Which of the following is a function of magnesium and iron in plants?

A
Energy transfer

B
Stomatal opening

C
Synthesis of chlorophyll

D
Translocation of carbohydrates

Solution

One of the major functions of magnesium (Mg) and iron (Fe) is the synthesis of chlorophyll.