Biology MCQs Section 5
The answers of questions marked with * are subject to change with time
- Diaphragm is a thin skeletal muscle in body related to:
A. Digestion system
B. Respiratory system
C. Nervous system
D. Circulatory system
Junior Clerk PWWB LHRD-19
- Man exhales _____ and inhales _____ during respiration.
A. Oxygen & Carbon dioxide
B. Carbon dioxide & Oxygen
C. Carbon monoxide & Oxygen
D. Carbon & Nitrogen
Tax Inspector-08
- Which two gases do you exhale more than you inhale?
A. Carbon and Nitrogen
B. Carbon and Oxygen*
C. Hydrogen
D. Chlorine
Naib Tehsildar-09
- _____ is the sensitive layer of eye.
A. Iris
B. Retina
C. Choroid
D. Sclera
Lecturer (Biology) PHED-20
- The part of the eye that allows us to focus on different things is known as the:
A. Cornea
B. Iris
C. Lens
D. Pupil
Gender Monitoring Specialist WDD-18 (Contract Basis)
- In eye donation, which part of the eye is used?
A. Retina
B. Cornea
C. Optic Nerve
D. Iris
Labour Officer-17
- Human eye is sensitive to which colour (light)?
A. Red
B. Green
C. Blue
D. Yellow
AD Pop Welfare-19
- Which of the following is responsible for the largest amount of oxygen of Earth?
A. Trees
B. Algae
C. Peat bogs
D. Grass
Labour Officer-17/AD Labour Welfare-17/Asst PAD-18
- If all the plants of the world die, all the animals will also die due to shortage of:
A. Shelter
B. Cold air
C. Oxygen
D. Food
Manager Auqaf-20
- Dead plants on the surface of water and oxygen depletion of the water body is called:
A. Deoxygenation
B. De-Nitrogenization
C. Eutrophication
D. Photosynthesis
Asst Punjab Workers Welfare Board LHRD-19 (Contract Basis)
- Which chemical in tobacco causes a smoker to be addicted to smoking?
A. Carbon monoxide
B. Tar
C. Nicotine
D. Ammonia
Labour Officer-17
- The respiratory problem common in smokers is:
A. Tuberculosis
B. Asthma
C. Emphysema*
D. Stroke
Asst S&GAD-20