biology MCQs – Page 51

Practise multiple-choice questions from biology for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

biology Mcqs
1001. The cell wall is usually composed of two overlapping halves called epitheca and hypotheca in__________?
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A. Pyrrophyta

B. Chlorophyta

C. Diatoms

D. Desmids

1002. Which of the following filtrate contains excessive amount of amino acids, glucose, and salts?
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A. Filtrate passing through distal conveluted tubule

B. Filtrate passing through collecting tubules

C. Glomerular filtrate

D. Filtrate passing through ascending limb

1003. Who discovered the peptic ulcer causing bacteria H.PYLORI?
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A. Robert Hook

B. James parkinson

C. None of these

D. g>Dr Barry Marshall and dr Robin Warren
1004. It is the discharge of blood from blood vessels?
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A. Cerebral infarction

B. Thromboembolism

C. Cerebral Hemorrhage

D. Myocardial infarction

1005. which of the following is called protein synthesizing machine?
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A. nucleus

B. ribosomes

C. chromosomes

D. mitochondria

1006. S-band locomotion is characteristically seen in___________?
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A. Fish like mammals.

B. All fishes.

C. Cartilaginous fish.

D. Bony fish

1007. Diatom frustule/ shell is made of_____________?
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A. Silica

B. Calcium carbonate

C. Manesium carbonate

D. Both B. and C.

1008. Higher vascular plants are also called__________?
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A. seed plants

B. none of these

C. flowering plants

D. ferns

1009. Under unfavourable conditions, the Amoeba reproduces by ________ ?
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A. Encystment

B. Conjugation

C. Binary fission

D. Endomixis

1010. It is stiff rod of special cells surrounded by connecive tissue present in the mid -dorsal region and appears in the embryos of all chordates
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A. Placenta

B. Ligule

C. Notochord

D. Cranianta

1011. In plants, the neighbouring cells are connected with one another by__________?
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A. Plasmodesmata

B. Cell walls

C. Vacuoles

D. Both A & B
1012. Lenticular transpiration is ___________ of total transpiration?
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A. 2-3%

B. 1-3%

C. 1-4%

D. 1-2%
1013. Chitin in cockroach is absent in____________?
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A. All of these

B. Endocuticle

C. Exocuticle

D. Epicuticle
1014. Which branch of science is short in laws ?
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A. Chemistry

B. Physics

C. Biology

D. All of these

1015. ___________ function as multisensory hydraulic valve?
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A. All of these

B. Lenticels

C. Hydathods

D. Guard cells
1016. The chloroplasts of diatoms and chrysophycean algae do not possess____________?
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A. Carotenes with chlorophylls

B. Enzymes for photolysis

C. Defined grana and stroma

D. Chloryphyllpigments

1017. In a hot summer after noon, if your bodys Homeostatic machinery keep your internal temperature quite lower than that of external than this is an example of____________?
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A. Positive feed back

B. Feed back

C. Negative feed back

D. Osmoregulation

1018. Amoeba moves in water with the help of locomotory organs called_________?
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A. flagella

B. pseudopodia

C. tube feet

D. cilia

1019. The following vegetable have 90% of water?
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A. Cassava

B. Lady finger(okra)

C. Cabbage

D. Non of these

1020. The mechanism of regulation, generally between organism and its environment, of solutes and the gain and the loss of water is called________?
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A. Osmoregualtion

B. Homeostasis

C. Thermoregulation

D. Hemostasis