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Biology Life Science Test Medium Mode MCQs With Answers
Question # 1
The first step of krebs cycle is union of acetyl co A with oxaloacetate to form.
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Isocitrate
Citrate
Malate
Alpha ketoglutarate
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Question # 2
In root nodules bacteria convert nitrogen into.
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Ammonia
Nitrate
Urea
Nitrite
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Question # 3
Which of the following is a motile coclenterate
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Hydra
Obelia
Jelly fish
Corals
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Question # 4
Female gametophyte in flowering plants is
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Ovary
Archegonium
Seed
Embryo sac
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Question # 5
Th polyp is reduced and medusa is dominant.
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Jelly fish
Hydra
Sea anemon
Obelia
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Question # 6
The length of jejunum is about.
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2.8 m
2.4 m
1.4 m
2 m
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Question # 7
Carbon di oxide enters the leaves through.
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epidermis
Cuticle
Stomata
Air space
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Question # 8
First discovered antibiotic
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Lovastatin
Cyclosporine
Penicillin
Ergotine
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Question # 9
The number of oxidation steps during one Krebs. cycle are.
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02
03
04
05
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Question # 10
A group of living organisms of the same species located in the same place and time is called.
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Community
Population
Induvial
Biome
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Question # 11
Lock and key model was proposed by
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Koshland
Emil Fisher
Watson
Flemming
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Question # 12
A dominant plant of the deciduous forest is the
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Cactus
Acacia
euphorbia
Taxusbaccata
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Question # 13
Inheritance of skin colour in man is controlled by eight pairs of genes , which are:
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Linked
Codominent
Multiple alleles
Assorting independently
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Question # 14
Temperate deciduous forest are located in Pakistan at.
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Chilas
Mian wali
Shogran
Sindh
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Question # 15
Abdomen has a peritoneal cavity, lined by a thin epithelium called.
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ectoderm
endoerm
Peritoneum
Epidermis
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Question # 16
The protein filament whihc binds to the calcium is
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Actin
Myosin
Troponin
Tropomyosin
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Question # 17
Fruit development without fertilization is
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Dormancy
Climacteric
Parthenocarpy
Parthenogenesis
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Question # 18
the basic functional unit of ecology is
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Niche
Ecosystem
Community
Population
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Question # 19
To genome fragment can be separated according to their lengths during .
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Gel electrophoresis
PCR
Cloning
Gene therapy
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Question # 20
Hatching period of chick is.
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15 days
18 days
21 days
28 days
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Question # 21
The incidence of calcium oxalate type stones are.
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40%
50%
60%
70%
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Question # 22
Digitigrade mammals tend to walk on thaeir
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Soles
Digits
Tips of the toes
Tips of the fingers
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