Biology Past Paper Questions

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Q 321:Conversion on Nitrogen gas into nitrates is called:
A
Denitrification
B
Ammonification
C
Nitrification
D
Nitrogen fixation
Sargodha, 2019
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Q 322:Example of stem tuber is:
A
Tulip
B
Ginger
C
Garlic
D
Potato
Sargodha, 2019
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Q 323:Guanine forms pair with:
A
Adenine
B
Thymine
C
Cytosine
D
Carbon
Sargodha, 2019
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Q 324:In genetic engineering, plasmid is used as:
A
Donor
B
Ligase
C
Endonuclease
D
Vector
Sargodha, 2019
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Q 325:Length of Oesophagous in adult human is:
A
28 cm
B
25 cm
C
35 cm
D
30 cm
Sargodha, 2019
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Q 326:Fluid of chloroplast is called :
A
Cytoplasm
B
Cytosol
C
Stroma
D
Nucleoplasm
Sargodha, 2019
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Q 327:Force that is responsible for the conduction of water and salts from soil by the roots is called:
A
Respiration
B
transpiration pull
C
Diffusion
D
Osmosis
Sargodha, 2019
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Q 328:Duplication of chromosomes takes place in phase:
A
G1
B
S phase
C
G2
D
G0
Sargodha, 2019
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Q 329:Chromosomes are composed of:
A
DNA
B
RNA
C
DNA and Protein
D
RNA and Protein
Sargodha, 2019
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Q 330:Complete set of spindle fibers is called:
A
Chromatin
B
Mitotic spindle
C
Kinetochore
D
Phragmoplast
Sargodha, 2019
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Total MCQs: 1434Page 33 of 144
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