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Biology 1525 MCQs [All-Courses]

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Biology covers key concepts of life, organisms, and human systems with exam-focused notes for PPSC, FPSC, KPPSC, BPSC.,NTS, OTS, AJKPSC. Clear, concise topics help students prepare effectively for competitive tests.

All Topics  1525

Which of the following animals has a respiratory system with one way flow of the air through the lungs, and the air is renewed after inspiration?
A Cockroach
B Earthworm
C Aves
D Frogs
Correct Answer: Aves
When abdomen expands, the number of spiracles open is_____________?
A 2
B 3
C 6
D 8
Correct Answer: 8
Which of the following promotes growth in plants?
A Photorespiration
B Calvin cycle
C Both of these
D None of these
Correct Answer: Calvin cycle
Number of spiracles present in the thorax of cockroach is___________?
A 2
B 3
C 5
D 4
Correct Answer: 4
Of the following, which one is a contagious disease?
A Tuberculosis
B Lungs cancer
C Asthma
D Emphysema
Correct Answer: Tuberculosis
Number of spiracles present in cockroach is___________?
A 15
B 10
C 20
D 30
Correct Answer: 20
A disease of longs in which inside of the lungs is damaged resulting in cough and fever?
A Lung cancer
B Asthma
C Emphysema
D Pulmonary tuberculosis
Correct Answer: Emphysema
More than ___________ compounds of tar of tobacco smoke are involved to cause cancer?
A 5
B 90
C 15
D 10
Correct Answer: 10
Active site of Rubisco is evolved to bind?
A CO2
B O2
C H2O
D All of these
Correct Answer: All of these
Arterial blood contains _________ of CO2 per 100 ml of blood
A 54 ml
B 60 ml
C 64 ml
D 50 ml
Correct Answer: 50 ml

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