biology MCQs – Page 55

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 Review each marked answer and report any item that may be outdated or unclear.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
1081. In man which organisms cause abscesses on the skin of arms or legs?
comments icon0

A. Ascaris

B. Bacteria

C. Suinea worm

D. Ring worm

1082. In Urea cycle __________ ammonia molecules combine with 1 CO2 molecule to form 1 molecule of urea.
comments icon0

A. 1

B. 4

C. 2

D. 3

1083. In animals excess of nitrogen is excreted primarily in form of___________?
comments icon0

A. Pyrimidine

B. Ammonia

C. Trimethyamine oxide

D. Creatinine

1084. Which adaptation is acquired by plants of cooler areas to prevent lipid crystal formation in cell membrane?
comments icon0
A. Increase in proportion of unsaturated fatty acids.

B. Development of heat shock proteins.

C. Change in the solute composition of the cell membrane which prevents crystallization.

D. Change in membrane protein composition.

1085. Accurate name given to blood is ___________ ?
comments icon0

A. Hemoglobin

B. Fluid tissue

C. Red fluid

D. Plasma

1086. The foetus is protected from the mechanical damage by the__________?
comments icon0

A. uterus

B. vagina

C. amniotic fluid

D. cervix

1087. Each human kidney receives _______% of total cardiac out put?
comments icon0
A. 20%

B. 10%

C. 40%

D. 30%

1088. All of the follwing are blood clots except:___________?
comments icon0
A. Atheroma

B. Hematoma

C. Thrombus

D. Embolus

1089. Blubber a thick layer of fat is present in___________?
comments icon0

A. Flying mammals

B. Terrestrial mammals

C. Marine Mammals

D. Fresh water mammals

1090. In all coelentrates endoderm give rise to__________?
comments icon0
A. digestive system

B. circulatory system

C. reproductive system

D. nervous system

1091. Corolla and calyx collectively termed as___________?
comments icon0

A. Complete flower

B. Se*ual whorls

C. Hermaphrodite

D. Prienth

1092. Cell wall is the non living , outermost boundary of__________cell?
comments icon0

A. plant

B. fungal

C. all the above

D. bacterial

1093. The plants which produce embryo but lack vascular tissues and seeds are placed in_________?
comments icon0

A. pteridophytes

B. all of these

C. tracheophytes

D. bryophytes
1094. Commonly in other plants than tall ones the speed of upward movement of water is____________?
comments icon0
A. 1 mh-1

B. 7 mh-1

C. 8mh-1

D. 4 mh-1

1095. Stomata open due to _________ of K+ into the guard cells from the surrounding epidermis
comments icon0
A. Active transport

B. Osmosis

C. Diffusion

D. All of these

1096. Aerating openings formed in the bark through which exchange of gases takes place and water is lost in the form of vapours are___________?
comments icon0

A. Hydathods

B. None of these

C. Stomata

D. Lenticels
1097. Diatoms are found in__________?
comments icon0

A. Phytoplanktonic population

B. All of the above

C. Marine environment

D. Freshwater lakes and ponds

1098. Mammalian kidney, under restricted water supply can conserve water by over ________ % reabsorption of glomerular filtrate
comments icon0

A. 90.50%

B. 95.50%

C. 80.50%

D. 99.50%
1099. Disease which transferred from animal to Human is_________?
comments icon0

A. radic

B. demic

C. emic

D. onosis
1100. The respiratory problem most common in smokers is_________?
comments icon0

A. cancer

B. tuberculosis

C. emphysema

D. asthma