Magnesium is required for the synthesis of:
- Chlorophyll
- Cell wall
- Guard cells
- Proteins
Show answer and explanation
Answer: A. Chlorophyll
Magnesium is a central atom in the chlorophyll molecule; its deficiency causes chlorosis.
Matric Biology: Nutrition, questions with answers
Practise 29 real Federal Board questions on Nutrition from 2023 to 2026. See the answer and explanation as soon as you answer.
29real questions
8multiple choice
5exam sessions
About Nutrition in Matric Biology
Nutrition is one of the 15 main chapters in our Federal Board Matric Biology question bank (9th and 10th class), and about 7% of its real questions come from it. Tayyari Karo has 29 real questions on this chapter from 2023 to 2026; 8 are multiple choice and marked instantly, and the rest are short and long questions with a model answer. By difficulty: 17 medium, 12 easy.
Work through the questions below, then open the explanation for each one. Redo the ones you missed a few days later.
Try 8 real questions
These are real past-paper questions. Think of your answer first, then open the explanation.
The main site of digestion and absorption of food is the:
- Stomach
- Large intestine
- Rectum
- Small intestine
Show answer and explanation
Answer: D. Small intestine
The small intestine is the main site of chemical digestion and nutrient absorption.
Hydrolysis of starch occurs with the help of:
- Sucrase
- Amylase
- Cellulase
- Lipase
Show answer and explanation
Answer: B. Amylase
Amylase hydrolyses starch into maltose/sugars.
What is transported by Lacteal?
- Amino acid
- Blood
- Sugar
- Fats
Show answer and explanation
Answer: D. Fats
Lacteals are lymph vessels in intestinal villi that absorb digested fats (as chylomicrons).
The correct pair for vitamin and its deficiency caused disease is:
- Vitamin A - Scurvy
- Vitamin C - Weak eyesight
- Vitamin B - Osteomalacia
- Vitamin D - Rickets
Show answer and explanation
Answer: D. Vitamin D - Rickets
Vitamin D deficiency causes rickets (weak/soft bones) in children.
Stomach wall is not digested because of:
- Pepsin
- Mucous
- Saliva
- Renin
Show answer and explanation
Answer: B. Mucous
A thick mucous layer lining the stomach wall protects it from being digested by its own acid and pepsin.
Differentiate between monosaccharides and disaccharides (any three differences).
Show model answer
(1) Monosaccharides are single sugar units (e.g. glucose, fructose) that cannot be hydrolysed further; disaccharides are made of two monosaccharide units joined together (e.g. sucrose, maltose) and can be hydrolysed into their component monosaccharides.
(2) Monosaccharides have the general formula (CH₂O)ₙ; disaccharides are formed by loss of a water molecule during bonding (condensation) between two monosaccharides.
(3) Monosaccharides taste sweeter individually and are directly absorbed by the body, while disaccharides must first be digested (hydrolysed) into monosaccharides before absorption.
Write one role each of hormones, fibrinogen and keratin as proteins in the cells of human body.
Show model answer
Hormones (e.g. insulin) — act as chemical messengers, regulating and coordinating body processes such as blood glucose level.
Fibrinogen — a plasma protein that is converted to fibrin during blood clotting, helping to stop bleeding at a wound.
Keratin — a structural protein that makes up hair, nails and the outer layer of skin, providing toughness and protection.
Sessions with Nutrition questions
| Session | Questions |
|---|---|
| 2026 Annual | 8 |
| 2025 1st Annual | 4 |
| 2025 2nd Annual | 7 |
| 2024 Annual | 6 |
| 2023 Annual | 4 |
Common questions
What does the Nutrition chapter cover on this page?
29 real Federal Board (FBISE) Biology questions on Nutrition from 2023 to 2026, for 9th and 10th class. Each one shows the session it came from.
Are the answers official?
No. We could not find an official FBISE marking scheme for these papers, so the answers and explanations are written by Tayyari Karo for practice. Check anything important with your teacher or textbook.
Is it free?
You can start free with no signup. A small set of papers per subject is free, and Premium unlocks the full question bank.