Formative Practice 2.2 – Form 5 Science (KSSM) Chapter 2


Question 1:
(a) What is the meaning of macronutrient? Name five examples of macronutrients.
(b) What is the meaning of micronutrient? Name five examples of micronutrients.

Answer:
(a)
• Macronutrient is an element (or mineral) needed by plants in large quantities.
• Carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium and sulphur (any five)

(b)
• Micronutrient is an element (or mineral) needed by plants in small quantities.
• Boron, molybdenum, zinc, manganese, copper and iron (any five)

Question 2:
What is the importance of macronutrients and micronutrients to plants?

Answer:
Plants need macronutrients and micronutrients for healthy growth, development and reproduction.

Question 3:
Match the macronutrient with the effect of its deficiency on plant growth.


Answer:
(a) Stunted growth of roots

(b) Brown spots on edges of leaves

(c) Small leaves which fall easily

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