Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
Food is essential for all living organisms to provide energy, help in growth, and stay healthy.
The two primary sources of food are Plants and Animals.
Plants produce their own food through photosynthesis using sunlight, chlorophyll, (carbon dioxide), and (water).
We eat different parts of plants: Roots (e.g., Carrot, Radish), Stems (e.g., Potato, Sugarcane), Leaves (e.g., Spinach, Lettuce), Flowers (e.g., Cauliflower, Broccoli), and Seeds (e.g., Wheat, Pulses).
Animal-based foods include milk, eggs, meat, and honey. Products made from milk are called dairy products (e.g., , , ).
Medicinal plants are used to treat ailments: Tulsi for cough and cold, Turmeric for healing wounds, and Ginger for stomach aches.
The basic energy unit obtained from food is often simplified as glucose, which has the chemical formula .
📐Formulae
💡Examples
Problem 1:
Identify the source and the specific plant part for 'Spinach'.
Solution:
Source: Plant; Part: Leaves.
Explanation:
Spinach is a leafy vegetable where the plant stores nutrients in its leaf structure.
Problem 2:
A student is drinking a glass of milk. Which category of food source does this belong to?
Solution:
Animal Source.
Explanation:
Milk is obtained from animals like cows, buffaloes, and goats.
Problem 3:
Write the chemical formula for the water molecule that plants use to make food.
Solution:
Explanation:
Plants absorb from the soil through their roots to perform photosynthesis.
Problem 4:
Match the medicinal plant to its use: (A) Turmeric, (B) Tulsi.
Solution:
(A) Healing wounds, (B) Curing cough and cold.
Explanation:
Turmeric has antiseptic properties, while Tulsi is effective for respiratory relief.