_____________ supported theory of special creation?

A. Linnaeus
B. Aristotle
C. Mendel
D. Lamarck

Percentage of proteins in cell membrane is____________?

A. 20-40%
B. 40-50%
C. 60-80%
D. 80-100%

Which of the following is most constant abiotic component of ecosystem___________?

A. Air
B. Water
C. Land
D. Gravity

Ecosystem not found in Pakistan is_____________?

A. Tropical rain forest
B. Temperate deciduous forest
C. GraSSLand
D. Tundra

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

The productivity of aquatic ecosystem is basically determined by light and____________?

A. Co2
B. O2
C. Water
D. Nutrients

The first layer of cell wall which is formed is___________?

A. Primary wall
B. Secondary wall
C. Middle lamella
D. All of these

Annual rainfall in grassland is about_____________?

A. More than 2500 mm
B. 750-1500 mm
C. 250-750 mm
D. Less than 250 mm

Conversion of ammonia or ammonium ion into nitrites during nitrogen cycle occurs due_____________?

A. Rhizobium
B. Nitrosomonas
C. Nitrobacter
D. Pseudomonas

Cellulose is the major component of__________?

A. Primary wall
B. Secondary wall
C. Middle lamella
D. All of the above