Explanation

• Nutritive foods supply the body with necessary nutrients for growth, energy, and repair.
• They include all food groups that contribute to balanced nutrition.

Additional information:

• Cereals provide carbohydrates for energy.
• Vegetables and fruits provide vitamins and minerals.
• Meat provides proteins and iron for body-building.

Last verified on 20-01-2026

Explanation

• Xerophytes are plants adapted to survive in dry or low-water environments.
• They have special features to reduce water loss and store water.

Additional information:

Examples of xerophytes:

• Cactus
• Aloe vera
• Date palm
• Acacia
• Euphorbia

Last verified on 19-01-2026

Explanation

• Meristematic cells are undifferentiated cells capable of continuous division.
• They are responsible for the growth of plants in length and thickness.

Additional information:

Types of meristems:

• Apical meristem – root & shoot tips
• Intercalary meristem – nodes & internodes
• Lateral meristem – increase in girth
• Root meristem – root growth
• Shoot meristem – shoot growth

Last verified on 19-01-2026

Explanation

• In plants, carbohydrates are stored mainly in the form of starch.
• Starch serves as an energy reserve used during growth and development.

Additional information:

Storage forms in plants:

• Starch – main carbohydrate reserve
• Sucrose – transport form of carbohydrate
• Cellulose – structural carbohydrate
• Glycogen – storage carbohydrate in animals
• Glucose – immediate energy source

Last verified on 19-01-2026

Explanation

• DNA (Deoxyribonucleic Acid) contains the sugar deoxyribose, which is a five-carbon sugar.
• It forms the backbone of the DNA molecule along with phosphate groups.

Additional information:

• Sugars in nucleic acids:
• DNA – Deoxyribose
• RNA – Ribose
• Glucose – energy source in cells
• Fructose – sugar in fruits
• Galactose – sugar in milk

Last verified on 19-01-2026