Class 12 Biology 2021 Overseas MCQs Test

ByMuhammad Zaman June 17, 2022October 28, 2022

FBISE Federal Board Class 12 Biology 2021 Overseas MCQs Test. Do as much practice as you can so that you get good marks in the final exams.

Class 12 Biology MCQs Tests

Class 12 Biology 2021 Overseas MCQs Test

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Class 12 Biology
Past Paper 2021 Overseas
Practice MCQs Test

1 / 17

Water balance and blood pressure are regulated by:

Cerebellum

Thalamus

Hypothalamus

Cerebrum

2 / 17

Which of the following represents a cartilaginous joint?

Pubic symphysis

Shaft of humerus

Root of a tooth

Socket in the maxilla

3 / 17

Select the bacterium responsible for symbiotic nitrogen fixation:

Azotobacter

Clostridium

Nitrobacter

Rhizobium

4 / 17

If a carrier female for colour blindness marries a colour hind male what is the probability of disease in their offspring?

75%

Zero

50%

25%

5 / 17

Select the one which diffuses from RBC to plasma when the partial pressure of CO₂ is higher in Tissues:

Na⁺

K⁺

HCO₃^-

6 / 17

In which part of nephron maximum amount of electrolytes and water form glomerular filtrate is absorbed:

Collecting duct

Loop of Henle

Proximal

Distal

7 / 17

Select the mismatched skeletal structure:

Ileum & acetabulum — Pelvic girdle

Pubis & Scapula — Pectoral girdle

Ribcage & vertebral column — Axial skeleton

Atlas & Axis — Cervical vertebrae

8 / 17

cDNA can be formed by:

Polymerization

Transition

Reverse transcription

Replication

9 / 17

Restriction enzyme cuts the DNA between G & A only when the sequence in DNA is:

GATTCC

GAACTT

GATTCA

GAATTC

10 / 17

All the structures are endodermal in origin EXCEPT:

Kidney

Brain

Lungs

Stomach

11 / 17

Which of the following regarding calcitonin is false?

Secreted by thyroid

Acts antagonistic to parathormone

Deposit Ca⁺⁺ in bone

Increases Ca⁺⁺ reabsorption by kidney

12 / 17

Select the excitatory neurotransmitter of the peripheral nervous system:

Dopamine

Norepinephrine

Acetylcholine

Serotonin

13 / 17

Which of the following remains unchanged during contraction & relaxation of a muscle?

A band

I band

H zone

Z line

14 / 17

If fertilization fails to occur, choose the one, which does NOT happen:

Level of LH deceases

Degeneration of corpus luteum occurs

Shedding of endometrium occurs

Progesterone level increases

15 / 17

If a heterozygous black (BeEe) is crossed with a yellow partner (bbee), what is the probability of a black puppy?

2/4

3/4

Zero

1/4

16 / 17

Sperms are stored in:

Seminal vesicles

Efferent ductules

Rete testis

Epididymis

17 / 17

Select the correctly matched one:

Yolk sac - Circulatory system

Amnion - RBC formation

Chorion - Placenta

Allantois - fluid medium

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