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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

95% of the cytoplasm of RBCs is____________?
A Hemoglobin
B Enzymes
C Salts
D Other proteins
Correct Answer: Hemoglobin
An antibody is made of _________ polypeptide chains?
A 1
B 2
C 3
D 4
Correct Answer: 4
______________ of earth surface is covered with water?
A 10%
B 30%
C 75%
D 90%
Correct Answer: 75%
Gaseous exchange in birds occurs at level of_______________?
A Alveoli
B Air sacs
C Bronchi
D Parabronchi
Correct Answer: Parabronchi
Animals of which class of arthropoda are present everywhere_____________?
A Crustacean
B Insecta
C Arachnida
D Myriapoda
Correct Answer: Insecta
Red to orange pigments are_____________?
A Carotenes
B Carotenoids
C Xanthophylls
D Chlorophyll
Correct Answer: Carotenes
Enterobius vermicularis is commonly known as____________?
A Flatworm
B Pinworm
C Hook worm
D Tapeworm
Correct Answer: Pinworm
Amphibians are considered to be evolved from___________?
A Newts
B Varanope
C Dipnoi
D Hagfishes
Correct Answer: Dipnoi
Which of the following is the correct sequence in the biological method?
A Observation?hypothesis?law?theory
B Observation?hypothesis?deduction?testing of deduction
C Hypothesis?observation?deduction?testing of deduction
D law?theory?deduction?observation
Correct Answer: Observation?hypothesis?deduction?testing of deduction
How many spiracles are present in cockroach_____________?
A 5
B 10
C 20
D 40
Correct Answer: 20
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