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12th Class Biology Chapter Wise MCQs:

Karachi board, Sukkur board, Hyderabad board, Larkana board, Mirpur Khas board.

Sindh->12th Class->Biology MCQs

Sindh Question:

A chromosome having centromere near the tip, j-shaped during migration is:

A: Telocentric
B: Acrocentic
C: Metacentric
D: Ub-metacentric
Answer: B
waqasaftab

Sindh Question:

Entire Central nerves system Is composed of

A: Sensory neurons
B: Motor neurones
C: Inter neurons
D: All of these
Answer: C

Sindh Question:

Most important part of Central nerves system Is

A: spinal cord
B: , cerebrum
C: Brain
D: Medulla oblongata
Answer: C

Sindh Question:

The eye defect in which far objects are seen blue is

A: Glaucoma
B: Myopia
C: Long sightedness
D: Cataract
Answer: B

Sindh Question:

Smell transmit to brain through which nerve

A: Auditory nerve
B: Olfactory nerve
C: Motor nerve
D: Optical nerve
Answer: B

Sindh Question:

The plant hormones commonly called?

A: Phytoplankton
B: Phytohormone
C: Phototropism
D: None
Answer: C

Sindh Question:

Member of the same species living in the same place at the same time make a;

A: Habitat
B: Bioshphere
C: Communtiy
D: Population
Answer: D

Sindh Question:

Which hormone helps in sucking of milk from Breasts?

A: Prolactin
B: TetraaiodoThyroid
C: Parathyroid
D: Oxytocin
Answer: D

Sindh Question:

The major power requirements of pakistan are accomplished by

A: nuclear energy
B: solar energy
C: hydro electric power
D: tidal power
Answer: C
Maham

Sindh Question:

Noise is considered as beyond

A: 30 decibels
B: 50 decibels
C: 80 decibels
D: 10 decibels
Answer: C
Maham

Sindh Question:

Osteoarthritis is a

A: Bacterial disease
B: Degenerative disease
C: Viral disease
D: Protozoan disease
Answer: B
Maham

Sindh Question:

Sickle cell anaemia is a disease caused by

A: Abnormal gene
B: Virus
C: Fungus
D: Bacteria
Answer: A
Maham

Sindh Question:

Night blindness is caused due to deficiency of

A: Vitamin A
B: Vitamin K
C: Vitamin C
D: Minerals
Answer: A
Maham

Sindh Question:

The anemia is due to deficiency of

A: Calcium
B: Iron
C: Iodine
D: Vitamins
Answer: C
Maham

Sindh Question:

Eutrophication in lakes and ponds is due to growth of

A: Bacteria
B: Plants
C: Algae
D: Fungi
Answer: C
Maham

Sindh Question:

The gas responsible for depletion of ozone is

A: Chlorine
B: Nitrogen
C: Oxygen
D: Carbon dioxide
Answer: A
Maham

Sindh Question:

The gas responsible for global warming is

A: Oxygen
B: Nitrogen
C: Ozone
D: Carbondioxide
Answer: D
Maham

Sindh Question:

The most safe and cheap resource of energy is

A: Coal
B: Petroleum
C: Hydroelectric
D: Nuclearenergy
Answer: A
Maham

Sindh Question:

The non-renewable resources of the following is

A: Wild life
B: forest
C: water
D: coal
Answer: D
Maham

Sindh Question:

Microcephaly is cause due to

A: Malnutrition
B: Genetic disorder
C: Bacteria
D: Fungi
Answer: B

Sindh Question:

Each myosin filament is surrounded by

A: 4 actin filament
B: 6 actin filament
C: 8 actin filament
D: 12 actin filament
Answer: B

Sindh Question:

In leaf midrib , vein and vein lets contain

A: Epidermal tissue
B: Conducting tissue
C: Ground tissue
D: Supporting tissue
Answer: B

Sindh Question:

Sclerenchyma cells present in hard parts are called

A: Epidermal tissue
B: Ground tissue
C: Supporting tissue
D: Conducting tissue
Answer: C

Sindh Question:

Parenchyma cells storing food are called

A: Epidermal tissue
B: Ground tissue
C: Supporting tissue
D: Conducting tissue
Answer: B

Sindh Question:

Parenchyma cells are found on surface are called

A: Epidermal tissue
B: Ground tissue
C: Supporting tissue
D: Conducting tissue
Answer: A

Sindh Question:

In vertebral skeletal muscle ,Z disc

A: Connect to myosin fibers
B: Lies parallel to actin fibers
C: Limits one end of sarcomere
D: None of these
Answer: C

Sindh Question:

Which of the following is involuntary striated muscle

A: Skeletal muscle
B: Smooth muscle
C: Cardiac muscle
D: Both A & B
Answer: C

Sindh Question:

The contraction of striated muscle is initiated by release of energy in presence of

A: Acetylcholine
B: Chloride ions
C: Potassium
D: Calcium ions
Answer: A

Sindh Question:

Which iof the following is direct source of energy for muscle contraction

A: ATP
B: Glucose
C: Glycogen
D: None of these
Answer: A

Sindh Question:

When muscle is contract

A: Myosin slide part actin
B: Sarcomere increase in size
C: Lactin acid is produce
D: Red muscle fibres get fatigue
Answer: A