(A) Carbon
(B) Hydrogen
(C) Oxygen
(D) Nitrogen
Answer: (C) Oxygen
Category: Biology MCQs Class 9
Biology solved multiple choice questions (MCQs) for class 9 with answers.
Which of the following is NOT a type of leukocyte?
(A) Lymphocyte
(B) Monocyte
(C) Eosinophil
(D) Osteocyte
Answer: (D) Osteocyte
Stomata close when the guard cells:
(A) Lose water
(B) Become turgid
(C) Gain chloride ions
(D) Gain potassium
Answer: (A) Lose water
The pancreas produces digestive enzymes and releases them in to the:
(A) Colon
(B) Gall Bladder
(C) Liver
(D) Duodenum
Answer: (D) Duodenum
In which component of the leaf cells, chlorophyll is present?
(A) Stroma
(B) Plasma membrane
(C) Thylakoids
(D) Cytoplasm
Answer: (C) Thylakoids