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

• Air is essential for plants because they need gases from the air for survival and growth.
• Plants take carbon dioxide (CO₂) from the air during photosynthesis to make their food.
• They also use oxygen (O₂) from the air for respiration to release energy.
• Without air, plants cannot perform important life processes.

Last verified on 16-03-2026

Explanation

• Osmosis is the movement of water molecules from a region of low solute concentration to a region of high solute concentration through a semi-permeable membrane.
• Blood purification techniques, like dialysis, use this principle to remove excess salts and waste from blood.
• Osmosis helps in maintaining fluid balance in cells and tissues.

Last verified on 16-03-2026

Explanation

• Translocation is the process by which food made in the leaves moves to other parts of the plant through the phloem.
• In plants, food is produced in the leaves through photosynthesis.
• This prepared food must be transported to other parts like roots, stems, and fruits.

Last verified on 16-03-2026

Explanation

• The Canines are pointed teeth that are adapted for tearing and slashing.
• Teeth are specialized structures in the mouth for biting, tearing, and chewing food.
• Humans have different types of teeth: incisors, canines, premolars, and molars.
• Humans have 4 canines (2 upper, 2 lower) used for tearing meat.

Last verified on 16-03-2026

Explanation

• Salivary glands produce saliva, which is essential for oral health and digestion.
• Saliva moistens and lubricates food to aid swallowing.
• It contains enzymes like amylase that begin the breakdown of carbohydrates.

Last verified on 16-03-2026

Explanation

• Peristalsis is the wave-like muscular contraction that moves food through the digestive tract.
• It occurs in the esophagus, stomach, and intestines.
• Helps in mixing food with digestive juices and pushing it forward.

Last verified on 16-03-2026

Explanation

• Milk is a rich source of calcium, an essential mineral for the body.
• Calcium helps in building and maintaining strong bones and teeth.
• It also supports muscle function and nerve signaling.

Last verified on 16-03-2026

Explanation

• Greenhouse walls are traditionally and usually made of glass.
• Glass: Traditional, durable, and provides maximum sunlight.

Explanation

• The elbow joint is a classic example of a hinge joint,
• It connects the humerus (upper arm) with the ulna and radius (forearm).
• Movement: Primarily allows for flexion and extension.
• Type: Synovial hinge joint.