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PPSC Biology MCQs With Answers Quiz Test

Q.1: Which of the following hormone is predominantly responsible for bone weakening in older women?

  1. Progesterone.
  2. Oestrogen.
  3. Parathyroid hormone.
  4. Calcitonin.

B

Q.2: Secondary cell wall of sclerenchyma cells is impregnated with———?

  1. Cellulose.
  2. Peptidoglycan and murein.
  3. Lignin.
  4. Pectin.

C

Q.3: Which of the follwing is a childhood disease resulting from nutritive Ca2+ deficiency?

  1. Hypocalcaemia Tatanic spasms.
  2. Osteomalacis.
  3. Rickets.
  4. Tetany

C

Q.4: Among the followings which is the most longest supportive cell?

  1. Tracheids
  2. Sclereids
  3. Trachea
  4. Collenchyma cells

A

Q.5: Which of the following statement about osteoporosis is incorrect.?

  1. It results from estrogen deficiency.
  2. Bone eating process takes over bone formation process.
  3. There is reduction of bone mass and change in chemical composition of the matrix
  4. It is common in old age.

C

Q.6: An increrase in plant girth due to activity of ——- is called secondary growth?

  1. Cork cambium
  2. Pith.
  3. Vascular cambium.
  4. Both a and c

D

Q.7: The blood enters the ——– side of heart ?

  1. Posterior
  2. Anterior
  3. Lateral
  4. All possible

A

Q.8: Voice box is another name used for——?

  1. Buccal cavity
  2. Pharynx
  3. Larynx
  4. Chest Cavity

C

Q.9: All of the following contain cartilage except:——?

  1. Larynx
  2. Trachea
  3. Bronchi
  4. Bronchioles

D

Q.10: Gaseous exchange through the skin is known as ——- respiration?

  1. Cuticular
  2. Cutaneous
  3. Skin
  4. Pulmonary

B