Biology MCQs

Option A: 1

Option B: 2

Option C: 3

Option D: 4

Correct Answer: 2 ✔

Option A: Ammonia

Option B: Urea

Option C: Uric acid

Option D: Trimethylamine oxide

Correct Answer: Ammonia ✔

Option A: Higher solute concentration to lower solute concentration

Option B: Lower solute concentration to higher solute concentration

Option C: Lower solvent concentration to higher solvent concentration

Option D: All of these

Correct Answer: Lower solute concentration to higher solute concentration ✔

Option A: 26 – 28°C

Option B: 36 – 38°C

Option C: 46 – 48°C

Option D: 56 – 58°C

Correct Answer: B. 36 – 38°C ✔

Option A: Hagfish

Option B: Fresh water fishes

Option C: Bony fishes

Option D: None of these

Correct Answer: Bony fishes ✔

Option A: There is a definite control system that regulates the homeostatic activities

Option B: Homeostatic mechanisms keep the internal environment fixed despite of wide changes in external environment

Option C: Because of this the fluctuations of internal environment are of extremely narrow range as compared to that of external environment

Option D: All are correct

Correct Answer: Homeostatic mechanisms keep the internal environment fixed despite of wide changes in external environment ✔

Option A: Change in membrane protein composition.

Option B: Change in the solute composition of the cell membrane which prevents crystallization.

Option C: Increase in proportion of unsaturated fatty acids.

Option D: Development of heat shock proteins.

Correct Answer: Increase in proportion of unsaturated fatty acids. ✔

Option A: Failure of bone marrow is accompanied with renal failure.

Option B: Destruction of RBC results from accumulated urea in the blood.

Option C: Chronicity of the disease is respobsible for anemia

Option D: Failure of proper RBC synthesis, due to lack of chemical stimulation.

Correct Answer: Failure of proper RBC synthesis, due to lack of chemical stimulation. ✔

Option A: Glucose

Option B: Amino acids

Option C: Nitrogenous waste

Option D: All of these

Correct Answer: Nitrogenous waste ✔

Option A: Round worms

Option B: Flateworm

Option C: Tape worms

Option D: Segmented worms

Correct Answer: Flateworm ✔

Option A: Ammonia

Option B: Urea

Option C: Uric acid

Option D: Trimethylamine oxide

Correct Answer: Ammonia ✔

Option A: They don’t require water for their metabolic process

Option B: They can retain excessive water in their body during raining season.

Option C: They feed on carbohydrate rich seeds which can provide them with metabolic water

Option D: They are anhydrobiotic organisms

Correct Answer: They are anhydrobiotic organisms ✔

Option A: Excessive urea which will increase their internal solute concentration and prevent body shrinkage in hypertonic environment

Option B: Trimethyl alanine

Option C: Ammonia

Option D: Trimethylamine oxide

Correct Answer: Trimethylamine oxide ✔

Option A: Positive feed back

Option B: Negative feed back

Option C: Feed back

Option D: Osmoregulation

Correct Answer: Negative feed back ✔

Option A: Hydrophytes

Option B: Mesophytes

Option C: Xerophytes

Option D: Halophytes

Correct Answer: Mesophytes ✔

Option A: Bony Marine fishes

Option B: Fresh water fishes

Option C: Both depending upon the surrounding water

Option D: None of these

Correct Answer: Fresh water fishes ✔

Option A: Osmoconformation

Option B: Osmoregulaton

Option C: Anhydrobiosis

Option D: Anhydrosis

Correct Answer: Anhydrobiosis ✔

Option A: Stem

Option B: Leaves

Option C: Flowers

Option D: Roots

Correct Answer: Leaves ✔

Option A: Fore brain

Option B: Hind Brain

Option C: Thalamus

Option D: Hypothalamus

Correct Answer: Hypothalamus ✔

Option A: Protective

Option B: Destructive

Option C: Constructive

Option D: Aggressive

Correct Answer: Protective ✔

Option A: Fresh water mammals

Option B: Terrestrial mammals

Option C: Marine Mammals

Option D: Flying mammals

Correct Answer: Marine Mammals ✔

Option A: Endotherms

Option B: Ectotherms

Option C: Heterotherms

Option D: Homeotherms

Correct Answer: Heterotherms ✔

Option A: Proximal convoluted tubule

Option B: Descending limb of loop of Henle

Option C: Ascending limb of loop of Henle

Option D: Collecting tubules

Correct Answer: Collecting tubules ✔

Option A: 10%

Option B: 20%

Option C: 30%

Option D: 40%

Correct Answer: 20% ✔

Option A: Glucose

Option B: Fructose

Option C: Sucrose

Option D: Glycogen

Correct Answer: Glycogen ✔

Option A: Protonephridium

Option B: Metanephridium

Option C: Malpighian tubules

Option D: Nephrons

Correct Answer: Metanephridium ✔

Option A: Digestive tract

Option B: Intestines

Option C: Haemocoel

Option D: Coelom

Correct Answer: Haemocoel ✔

Option A: It does not produce waste material

Option B: Due to absence of mesoderm

Option C: The whole body cells are in contact with water

Option D: It has pseudocoelom.

Correct Answer: The whole body cells are in contact with water ✔

Option A: Creatinine

Option B: Trimethyamine oxide

Option C: Pyrimidine

Option D: Ammonia

Correct Answer: Ammonia ✔

Option A: CO2

Option B: H2O

Option C: O2

Option D: Both A and B

Correct Answer: H2O ✔

Option A: Renal transplant

Option B: Peritoneal Dialysis

Option C: Lithotripsy

Option D: Hemodialysis

Correct Answer: Hemodialysis ✔

Option A: Calcium oxalate

Option B: Calcium phosphate

Option C: Uric acid

Option D: All of these

Correct Answer: Calcium oxalate ✔

Option A: Crotical

Option B: Medullary

Option C: Juxtramedullary

Option D: None of these

Correct Answer: Juxtramedullary ✔

Option A: Protonephridium

Option B: Metanephridium

Option C: Malpighian tubules

Option D: Nephrons

Correct Answer: Malpighian tubules ✔

Option A: Ammonia

Option B: Urea

Option C: Uric acid

Option D: Trimethylamine oxide

Correct Answer: Urea ✔

Option A: Nephrostome

Option B: Nephridiopore

Option C: Flame cell

Option D: Anus

Correct Answer: Nephridiopore ✔

Option A: 1 ml

Option B: 50 ml

Option C: 100 ml

Option D: 150 ml

Correct Answer: 50 ml ✔

Option A: Creatinine

Option B: Trimethyamine oxide

Option C: Xanthine

Option D: None of these

Correct Answer: Xanthine ✔

Option A: Stored excretory products in vacuoles, at a concentration that leads to crystal formation.

Option B: Accumulate waste in leaves, which fall in autumn.

Option C: Production of black wood in the center.

Option D: Excrete some of the waste materials directly into soil, occasionally using them as a chemical weapon against other competing plants.

Correct Answer: Excrete some of the waste materials directly into soil, occasionally using them as a chemical weapon against other competing plants. ✔

Option A: CO2

Option B: H2O

Option C: O2

Option D: Both A and B

Correct Answer: O2 ✔

Option A: Hagfish

Option B: Jelly Fish

Option C: Star Fish

Option D: Bony fishes

Correct Answer: Bony fishes ✔

Option A: Osmoconformers

Option B: Osmoregulators

Option C: Both depend upon the concentration of sea water

Option D: None of these

Correct Answer: Osmoconformers ✔

Option A: Increases transpiration by increasing the surface area of the leave.

Option B: Small and thick leaves to decrease the surface area proportional to the volume of the leave.

Option C: Stomata closing in sufficient supply, and opening in restricted supply of water.

Option D: None of these

Correct Answer: Increases transpiration by increasing the surface area of the leave. ✔

Option A: Homeostasis

Option B: Hemostasis

Option C: Osmoregualtion

Option D: Thermoregulation

Correct Answer: Osmoregualtion ✔

Option A: Endotherms

Option B: Ectotherms

Option C: Heterotherms

Option D: Homeotherms

Correct Answer: Ectotherms ✔

Option A: Elevation of temperature in cold conditions.

Option B: Embracing the enzymes and other proteins and prevent their denaturation.

Option C: Change the chemical nature of other proteins thus making them heat resistant.

Option D: Help in evaporative cooling.

Correct Answer: Embracing the enzymes and other proteins and prevent their denaturation. ✔

Option A: Pigmentation.

Option B: Respiration.

Option C: Evaporative cooling.

Option D: Excretion.

Correct Answer: Evaporative cooling. ✔

Option A: Providing insulation in cold environment.

Option B: Providing insulation in hot environment

Option C: Rapid heat production.

Option D: Controlling heat production.

Correct Answer: Rapid heat production. ✔

Option A: 35%

Option B: 45%

Option C: 55%

Option D: 75%

Correct Answer: 55% ✔

Option A: There are 5-7 pairs of heart.

Option B: They are present between 1-7th segments.

Option C: They are present lateral to the oesophagus.

Option D: They pump blood from ventral to dorsal vessel.

Correct Answer: They are present lateral to the oesophagus. ✔

Option A: Diffusion

Option B: Active transport

Option C: Osmosis

Option D: All of these

Correct Answer: Active transport ✔

Option A: Fishes

Option B: Amphibians

Option C: Reptiles

Option D: Mammals

Correct Answer: Fishes ✔

Option A: Increases.

Option B: Lowers.

Option C: Doesn’t effect.

Option D: Maintains.

Correct Answer: Lowers. ✔

Option A: Bacteria

Option B: Viruses

Option C: Fungi

Option D: Cyanobacteria

Correct Answer: Fungi ✔

Option A: Opening

Option B: Closure

Option C: Both of these

Option D: None of these

Correct Answer: Opening ✔

Option A: One

Option B: Two

Option C: Three

Option D: Four

Correct Answer: Two ✔

Option A: Temperature

Option B: pH

Option C: Light

Option D: None of these

Correct Answer: Light ✔

Option A: H-Van Mohl

Option B: Dixon

Option C: Vander wall.

Option D: Earnst Munch

Correct Answer: Earnst Munch ✔

Option A: Red Blood Cells

Option B: White Blood Cells

Option C: Haemoglobin

Option D: All of these

Correct Answer: White Blood Cells ✔

Option A: Antibodies

Option B: Hemoglobin

Option C: Enzymes

Option D: Proteins

Correct Answer: Hemoglobin ✔

Option A: Nautrophils

Option B: Basophila

Option C: Monocyte

Option D: Lymphocyte

Correct Answer: Monocyte ✔

Option A: Lenticels

Option B: Guard cells

Option C: Hydathods

Option D: All of these

Correct Answer: Guard cells ✔

Option A: 90%

Option B: 91%

Option C: 93%

Option D: 95%

Correct Answer: 90% ✔

Option A: Transpiration pull

Option B: Root pressure

Option C: Osmotic pressure.

Option D: None of these

Correct Answer: Root pressure ✔

Option A: Transpiration pull

Option B: Root pressure

Option C: Ascent of sap.

Option D: All of these

Correct Answer: Transpiration pull ✔

Option A: Diffusion.

Option B: Facilitated diffusion.

Option C: Passive transport.

Option D: Active transport.

Correct Answer: Facilitated diffusion. ✔

Option A: A big pore

Option B: Stoma

Option C: Sponge

Option D: Cars or small protusions

Correct Answer: Cars or small protusions ✔

Option A: Hydathods

Option B: Stomata

Option C: Lenticels

Option D: None of these

Correct Answer: Lenticels ✔

Option A: Antibodies.

Option B: Interferons

Option C: Antitoxins

Option D: All of these

Correct Answer: All of these ✔

Option A: Leucemia

Option B: Thalassaemia

Option C: Sickle cell anemia

Option D: None of these

Correct Answer: Thalassaemia ✔

Option A: Between right atrium and right ventricle

Option B: Between left atrium and left ventricle

Option C: At base of pulmonary artery

Option D: At base of aorta

Correct Answer: Between right atrium and right ventricle ✔

Option A: Atrial systole

Option B: Ventricular systole

Option C: Atrial diastole

Option D: Ventricular diastole

Correct Answer: Ventricular systole ✔

Option A: Arteries

Option B: Veins

Option C: Capillaries

Option D: None of these

Correct Answer: Arteries ✔

Option A: Stroke volume

Option B: Cardiac output

Option C: Blood pressure

Option D: Blood flow

Correct Answer: Blood pressure ✔

Option A: Thrombus

Option B: Embolus

Option C: Atheroma

Option D: Hematoma

Correct Answer: Atheroma ✔

Option A: Myocardial infarction

Option B: Cerebral infarction

Option C: Cerebral Hemorrhage

Option D: Thromboembolism

Correct Answer: Cerebral Hemorrhage ✔

Option A: Movement of viscera

Option B: Breathing movements

Option C: Valves

Option D: All of these

Correct Answer: All of these ✔

Option A: Artificially induced active immunity

Option B: Naturally induced active immunity

Option C: Artificially induced passive immunity

Option D: Naturally induced passive immunity

Correct Answer: Artificially induced active immunity ✔

Option A: 2-3%

Option B: 1-3%

Option C: 1-4%

Option D: 1-2%

Correct Answer: 1-2% ✔

Option A: Lenticels

Option B: Cuticle

Option C: Stomata

Option D: All of these

Correct Answer: Lenticels ✔

Option A: 6-8%

Option B: 5-7%

Option C: 7-9%

Option D: 4-6%

Correct Answer: 5-7% ✔

Option A: 600 Kpa

Option B: 800 Kpa

Option C: 1000 Kpa

Option D: 900 Kpa

Correct Answer: 800 Kpa ✔

Option A: 8mh-1

Option B: 1 mh-1

Option C: 7 mh-1

Option D: 4 mh-1

Correct Answer: 1 mh-1 ✔

Option A: Lignin

Option B: Cellulose

Option C: Pectin

Option D: All of these

Correct Answer: All of these ✔

Option A: Osmotic

Option B: Pressure

Option C: Both of these

Option D: None of these

Correct Answer: Osmotic ✔

Option A: Deffusion

Option B: Osmosis

Option C: Active transport

Option D: None of these

Correct Answer: Osmosis ✔

Option A: Water

Option B: Osmotic

Option C: Pressure

Option D: Solute

Correct Answer: Pressure ✔

Option A: Three

Option B: Four

Option C: Two

Option D: Five

Correct Answer: Two ✔

Option A: Pseudopods

Option B: Symplasts

Option C: Plasmodesmata

Option D: Pili

Correct Answer: Plasmodesmata ✔

Option A: Tonoplast

Option B: Apoplast

Option C: Symplast

Option D: Vacuolar.

Correct Answer: Apoplast ✔

Option A: Plasmodesmata

Option B: Cell walls

Option C: Vacuoles

Option D: Both ‘A’ & ‘B’

Correct Answer: D. Both ‘A’ & ‘B’ ✔

Option A: Photosynthesis

Option B: Respiration

Option C: Photophosporylation

Option D: None of these

Correct Answer: Respiration ✔

Option A: Tonoplast

Option B: Apoplast

Option C: Symplast

Option D: Vacuolar

Correct Answer: Apoplast ✔

Option A: Vacuoloplast

Option B: Tonoplast

Option C: Tanoplast

Option D: All of these

Correct Answer: Tonoplast ✔

Option A: Active transport

Option B: Passive transport

Option C: Both of these

Option D: None of these

Correct Answer: Passive transport ✔

Option A: Root hairs

Option B: Root cells

Option C: Underground stem

Option D: All of these

Correct Answer: Root hairs ✔

Option A: Two

Option B: Three

Option C: Four

Option D: Five

Correct Answer: Three ✔

Option A: Clavicle

Option B: Scapula

Option C: Both of these

Option D: None of these

Correct Answer: Both of these ✔

Option A: 7

Option B: 12

Option C: 5

Option D: 4

Correct Answer: 5 ✔

Option A: Bony fish

Option B: Cartilaginous fish.

Option C: Fish like mammals.

Option D: All fishes.

Correct Answer: Cartilaginous fish. ✔