biology Mcqs
1001. The cell wall is usually composed of two overlapping halves called epitheca and hypotheca in__________?
comments icon0

A. Pyrrophyta

B. Chlorophyta

C. Diatoms

D. Desmids

1002. Which of the following filtrate contains excessive amount of amino acids, glucose, and salts?
comments icon0

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?
comments icon0

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?
comments icon0

A. Cerebral infarction

B. Thromboembolism

C. Cerebral Hemorrhage

D. Myocardial infarction

1005. which of the following is called protein synthesizing machine?
comments icon0

A. nucleus

B. ribosomes

C. chromosomes

D. mitochondria

1006. S-band locomotion is characteristically seen in___________?
comments icon0

A. Fish like mammals.

B. All fishes.

C. Cartilaginous fish.

D. Bony fish

1007. Diatom frustule/ shell is made of_____________?
comments icon0
A. Silica

B. Calcium carbonate

C. Manesium carbonate

D. Both B. and C.

1008. Higher vascular plants are also called__________?
comments icon0
A. seed plants

B. none of these

C. flowering plants

D. ferns

1009. Under unfavourable conditions, the Amoeba reproduces by ________ ?
comments icon0
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
comments icon0

A. Placenta

B. Ligule

C. Notochord

D. Cranianta

1011. In plants, the neighbouring cells are connected with one another by__________?
comments icon0

A. Plasmodesmata

B. Cell walls

C. Vacuoles

D. Both A & B
1012. Lenticular transpiration is ___________ of total transpiration?
comments icon0

A. 2-3%

B. 1-3%

C. 1-4%

D. 1-2%
1013. Chitin in cockroach is absent in____________?
comments icon0

A. All of these

B. Endocuticle

C. Exocuticle

D. Epicuticle
1014. Which branch of science is short in laws ?
comments icon0

A. Chemistry

B. Physics

C. Biology

D. All of these

1015. ___________ function as multisensory hydraulic valve?
comments icon0

A. All of these

B. Lenticels

C. Hydathods

D. Guard cells
1016. The chloroplasts of diatoms and chrysophycean algae do not possess____________?
comments icon0

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____________?
comments icon0

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_________?
comments icon0

A. flagella

B. pseudopodia

C. tube feet

D. cilia

1019. The following vegetable have 90% of water?
comments icon0

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________?
comments icon0
A. Osmoregualtion

B. Homeostasis

C. Thermoregulation

D. Hemostasis

1021. Exceptionally the positive hydrostatic pressure generated by root pressure is about___________?
comments icon0

A. 600 Kpa

B. 800 Kpa

C. 900 Kpa

D. 1000 Kpa

1022. Which among the following is an Autotroph _________ ?
comments icon0

A. Fish

B. Butterfly

C. Mushroom

D. Algae
1023. The pressure generated when water enters & inflates plant cells is called ___________ potential?
comments icon0

A. Water

B. Osmotic

C. Solute

D. Pressure
1024. Which Part of the Brain Regulates Body Temperature?
comments icon0

A. medulla

B. cerebrum

C. hypothalamus

D. cerebellum

1025. Purine and pyrimidine metabolism results in production of____________?
comments icon0

A. None of these

B. Xanthine

C. Creatinine

D. Trimethyamine oxide

1026. The simplest amino acid is_________?
comments icon0

A. valine

B. glycine

C. alanine

D. phenylalanine

1027. The bristles on the body of the cockroach arise from__________?
comments icon0

A. Basement membrane

B. Malpighian cell

C. Epidermis

D. Trichogen cell
1028. Which excretory product in produced in plants during autotrophic mode of life?
comments icon0

A. CO2

B. H2O

C. O2

D. Both A and B

1029. A stone measuring 0.4 cm, blocking the outlet of renal pelvis resulting in mild to moderate tract obstruction. Which of the following technique will be opted to remove this stone?
comments icon0

A. Kidney surgery

B. None of these

C. Extracorporeal Shock wave lithotripsy

D. Burring a hole and removing the stone manually (nephrolithotomy)

1030. The normal pH of human blood is____________?
comments icon0

A. 6.4

B. 7.5

C. 7.4

D. 7

1031. The biggest group of invertebrates is_________?
comments icon0

A. Worms

B. None of these

C. Insects

D. Jelly fish

1032. The hormone that helps in Parthenocarpy?
comments icon0

A. Abscisic acid

B. Ethylene

C. Gibberellin

D. Cytokinin

1033. Open circulatory system can contain_________?
comments icon0

A. All of these

B. Haemoglobin

C. Red Blood Cells

D. White Blood Cells
1034. Which bone is called beauty bone in women?
comments icon0
A. clavicle

B. sternum

C. radius

D. maxilla

1035. Low level of CO2 favours _________ of the stomata.
comments icon0
A. Opening

B. Closure

C. Both of these

D. None of these

1036. Xylem and phloem are conducting tissues found in .?
comments icon0

A. micro orgamnisms

B. all the above

C. plants

D. animals

1037. In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen?
comments icon0

A. nematoda

B. echinodermata

C. arthropoda

D. mollusca

1038. Brown fat present in certain mammals is specialized in___________?
comments icon0

A. Providing insulation in cold environment.

B. Providing insulation in hot environment

C. Rapid heat production.

D. Controlling heat production.

1039. Animals living in the Tree trunks are known as___________?
comments icon0

A. Amphibious

B. Volant

C. Aquaticx

D. Arboreal
1040. It has been estimated that in a normal person plasma constitutes about ________ by volume of blood.
comments icon0
A. 55%

B. 75%

C. 45%

D. 35%

1041. During the process of cell division which of the following divides first?
comments icon0

A. cytodplasm

B. nucleus

C. vacuoles

D. mitochondria

1042. Which of the following is the less important organ in human body?
comments icon0

A. Hip bone

B. Appendix

C. Navel

D. Hair

1043. Stomatal transpiration is __________ of total transpiration
comments icon0

A. 93%

B. 91%

C. 95%

D. 90%
1044. Which of the following is most toxic?
comments icon0
A. Ammonia

B. Trimethylamine oxide

C. Urea

D. Uric acid

1045. Outside the thallus of Marchantia there are special structures called__________?
comments icon0

A. none of these

B. sporangium

C. rhizoids

D. stem tuber

1046. Pulling upward of water and dissolved minerals towards the leaves through the xylem tissue is called__________?
comments icon0

A. Root pressure

B. Ascent of sap.

C. All of these

D. Transpiration pull
1047. Panting is a representative of which mechanism?
comments icon0

A. Pigmentation.

B. Respiration.

C. Evaporative cooling.

D. Excretion.

1048. Which of the following are connective tissues?
comments icon0
A. all the above

B. bone

C. blood

D. cartilage

1049. The part of the brain that connects the two hemispheres of the brain is called____________?
comments icon0
A. Corpus callosum

B. Medulla oblongata

C. Cerebellum

D. Cerebral cortex

1050. Insulin is a human__________?
comments icon0

A. Gene

B. Diabetes

C. Glucose

D. Protein