(A) 10
(B) 20
(C) 30
(D) 40
Answer: (B) 20
Category: Biology MCQs Class 9
Biology solved multiple choice questions (MCQs) for class 9 with answers.
Which Muslim scientist was born in Iran and practised medicine in Iraq?
(A) Bu Ali Sina
(B) Abu Mansoor
(C) Jabir bin Hayan
(D) Abdul Malik Asmai
Answer: (C) Jabir bin Hayan
In which branch of Biology do we study insects?
(A) Parasitology
(B) Entomology
(C) Anatomy
(D) Pharmacology
Answer: (B) Entomology
Which nutrient plays an important role in opening and closing of stomata in plants?
(A) Calcium
(B) Potassium
(C) Sulphur
(D) Zinc
Answer: (B) Potassium
Which of the following is NOT involved in Transpiration pull?
(A) Xylem with small diameter
(B) Adhesion
(C) Phloem vessels
(D) Cohesion
Answer: (C) Phloem vessels