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.

Autophagosomes are____________?
A Those lysosomes which eat parts of their own cells to generate energy.
B Those lysosomes which eat old and worn out cellular organelles.
C Lysosomes which help in extracellular digestion
D Both a and b
Correct Answer: Both a and b
Number of cervical vertebrae is_____________?
A 5
B 7
C 9
D 12
Correct Answer: 7
Humming bird is an example of________________?
A Cold blooded animal
B Ectotherm
C Endotherm
D Heterotherm
Correct Answer: Heterotherm
Cellulose is the major component of__________?
A Primary wall
B Secondary wall
C Middle lamella
D all of the above
Correct Answer: Primary wall
Conversion of ammonia or ammonium ion into nitrites during nitrogen cycle occurs due_____________?
A Rhizobium
B Nitrosomonas
C Nitrobacter
D Pseudomonas
Correct Answer: Nitrosomonas
Annual rainfall in grassland is about_____________?
A More than 2500 mm
B 750-1500 mm
C 250-750 mm
D Less than 250 mm
Correct Answer: 250-750 mm
The first layer of cell wall which is formed is___________?
A Primary wall
B Secondary wall
C Middle lamella
D All of these
Correct Answer: Primary wall
The productivity of aquatic ecosystem is basically determined by light and____________?
A CO2
B O2
C Water
D Nutrients
Correct Answer: Nutrients
Movement of the material across the cell membrane which does not requiring expenditure of metabolic energy is called__________?
A Active transport
B Passive transport
C Co-transport
D Counter transport
Correct Answer: Passive transport
Ecosystem not found in Pakistan is_____________?
A Tropical rain forest
B Temperate deciduous forest
C Grassland
D Tundra
Correct Answer: Tropical rain forest