M C Q s D r i v e

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.

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