Explanation

• Root hairs are tiny tubular outgrowths of roots in plants.
• They increase the surface area of roots for efficient absorption.
• Their main function is to absorb water, mineral salts, and gases from the soil.
• They do not perform photosynthesis or reproduction.

Last verified on 17-03-2026

Explanation

• A sphygmomanometer is a medical device used to measure blood pressure.
• It consists of an inflatable cuff and a pressure gauge.

Last verified on 17-03-2026

Explanation

• Blood vessels and capillaries are part of the circulatory system.
• They transport blood throughout the body, ensuring oxygen and nutrients reach tissues.
• Veins specifically carry blood towards the heart, while arteries carry blood away from the heart.
• Capillaries connect arteries and veins and allow exchange of oxygen, nutrients, and waste.

Last verified on 17-03-2026

Explanation

• Bile, produced by the liver and stored in the gallbladder.
• It breaks down fats into smaller particles, making it easier for enzymes to digest them.
• This process is called emulsification.

Last verified on 17-03-2026

Explanation

• Lung cancer is a disorder of the respiratory tract caused by uncontrolled cell division.
• It leads to the formation of abnormal masses or tumors in the lungs.
• Major types include Small Cell Lung Cancer (SCLC) and Non-Small Cell Lung Cancer (NSCLC).
• Risk factors: Smoking, air pollution, genetic predisposition.
• Symptoms may include cough, chest pain, shortness of breath, and coughing blood.

Last verified on 17-03-2026

Explanation

x(a - c) + y(c - a)

= x(a - c) - y(a - c)

= (a - c)(x - y)

Last verified on 17-03-2026

Explanation

31 in binary:

31 ÷ 2 = 15 R1

15 ÷ 2 = 7 R1

7 ÷ 2 = 3 R1

3 ÷ 2 = 1 R1

1 ÷ 2 = 0 R1

→ 11111₂

Last verified on 17-03-2026

Explanation

The degree of a polynomial is the highest sum of exponents in a term:

2x⁴: degree 4

x³y: degree 4

xy³: degree 4

Highest degree is 4, so it's Biquadratic.

Last verified on 17-03-2026

Explanation

Arrange in order: 3, 5, 7, 9, 11, 13, 15, 17, 19

Middle value (5th): 11

Last verified on 17-03-2026

Explanation

Let the numbers be x and y

Sum: x + y = 27

Difference: x - y = 17

Last verified on 17-03-2026