Explanation

Plasma is the liquid part of blood that transports nutrients, hormones, and waste materials.

It carries digested food materials to all parts of the body for use or storage.

Explanation

The eye lens focuses light to form a real and inverted image on the retina.

The brain then processes this image and interprets it as upright.

Explanation

A photoelectric cell works on the photoelectric effect, where light strikes a material and releases electrons.

These released electrons generate an electric current, converting light energy into electrical energy.

Explanation

Explanation

A magnetic compass needle aligns itself with the Earth’s magnetic field.

Therefore, it always points in the North-South direction.

Explanation

Lost organ refers to a characteristic that is acquired due to injury or environmental factors.

It is not passed down to offspring, making it non-heritable.

Traits like eye color, height, and detached ear lobes are genetically inherited.

Explanation

Dialysis is a medical treatment used when the kidneys are unable to filter waste products from the blood, typically in renal (kidney) failure.

It helps maintain proper fluid and electrolyte balance in the body.

Explanation

The north pole of a magnet is usually painted red for easy identification.

The south pole is typically painted blue.

Explanation

Chemical changes involve a transformation where new substances with different properties are created.

It often through reactions like combustion, rusting, or digestion.

Explanation

Escape velocity is the minimum speed a spacecraft needs to completely overcome Earth's gravitational pull without further propulsion.

For Earth, this velocity is approximately 11.2 km/s.