Explanation

The human brain weighs approximately about 1.4 kilograms or 1400 in gram

and makes up about 2% of the human body weight.

The brain is divided into three regions -

Forebrain,

midbrain, 

hindbrain.

Explanation

A response is the reaction or change in behavior of an organism due to a stimulus.

It helps the organism adapt or react to its environment (like moving away from heat).

Explanation

The human trunk includes:

• Vertebral column: 26 bones
• Ribs: 24 bones (12 pairs)
• Sternum: 1 bone
• Hyoid bone: 1 bone (sometimes included)
• Coccyx: 4 fused bones (counted as 1)

Total: 26 (vertebrae) + 24 (ribs) + 1 (sternum) + 1 (hyoid) + 4 (coccyx, counted as 1) = 58 bones

Explanation

Antibodies are proteins produced by the immune system to neutralize or destroy antigens (disease-causing agents).

They are a key part of the body’s defense mechanism against pathogens like bacteria and viruses.

Explanation

CFCs (Chlorofluorocarbons) are not produced by vehicles.

They are primarily released from refrigerants and industrial processes.

CO2, NO2, and CO are all pollutants emitted by vehicle exhaust.

Explanation

During respiration, plants break down glucose to release energy (ATP), producing carbon dioxide and water as byproducts.

This process occurs in the mitochondria.

It happens day and night.

Explanation

Explanation

Bile is a digestive fluid produced by the liver and stored in the gallbladder, but it does not contain digestive enzymes.

Instead, bile contains bile salts, which help emulsify fats, making them easier for enzymes like lipase to break down.

Explanation

Angiography is a medical imaging technique used to visualize arteries and veins by injecting a contrast dye.

It helps in diagnosing cardiovascular diseases (CVDs) by detecting blockages or abnormalities in the arterial tree.

Explanation