Everyday Science MCQs

5120 MCQs  (Page 76 of 512)

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Which of the following is most constant abiotic component of ecosystem___________?
A. Air
B. Water
C. Land
D. Gravity
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Ecosystem not found in Pakistan is_____________?
A. Tropical rain forest
B. Temperate deciduous forest
C. GraSSLand
D. Tundra
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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
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The productivity of aquatic ecosystem is basically determined by light and____________?
A. Co2
B. O2
C. Water
D. Nutrients
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The first layer of cell wall which is formed is___________?
A. Primary wall
B. Secondary wall
C. Middle lamella
D. All of these
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Annual rainfall in grassland is about_____________?
A. More than 2500 mm
B. 750-1500 mm
C. 250-750 mm
D. Less than 250 mm
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Conversion of ammonia or ammonium ion into nitrites during nitrogen cycle occurs due_____________?
A. Rhizobium
B. Nitrosomonas
C. Nitrobacter
D. Pseudomonas
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Cellulose is the major component of__________?
A. Primary wall
B. Secondary wall
C. Middle lamella
D. All of the above
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Humming bird is an example of________________?
A. cold blooded animal
B. ectotherm
C. endotherm
D. heterotherm
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Number of cervical vertebrae is_____________?
A. 5
B. 7
C. 9
D. 12
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Word of the Day
18 Jul
Proactive
(of a person or action) creating or controlling a situation rather than just responding to it after it has happened.
فعال، پیش قدمی کے ذریعے صورتحال پر قابو پانیوالا

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