Biology MCQs

Option A: mesophyll cells

Option B: xylem cells

Option C: phloem cells

Option D: guard cells

Correct Answer: guard cells ✔

Option A: 6.4

Option B: 7.0

Option C: 7.4

Option D: 7.5

Correct Answer: 7.4 ✔

Option A: imbibition

Option B: plasmolysis

Option C: deplasmolysis

Option D: adhesion

Correct Answer: plasmolysis ✔

Option A: heart attack

Option B: hypertension

Option C: stroke

Option D: tumor

Correct Answer: heart attack ✔

Option A: respiration

Option B: photorespiration

Option C: glycolysis

Option D: pyruvic acid

Correct Answer: glycolysis ✔

A. Cabbage
B. Lady finger(okra)
C. Cassava
D  Non of these

Submitted by: Dr. GHAFOOR AZAM

Correct Answer: Lady finger(okra) ✔

Option A: Uterus

Option B: Ovaries

Option C: Oviduct

Option D: Cervix

Correct Answer: Oviduct ✔

A. Robert Hook
B. James parkinson
C. Dr Barry Marshall and dr Robin Warren
D. None of these

Submitted by: Ibrahim

Correct Answer: Dr Barry Marshall and dr Robin Warren ✔

Option A: Arboreal

Option B: Volant

Option C: Amphibious

Option D: Aquaticx

Correct Answer: Arboreal ✔

Option A: 40%

Option B: 45%

Option C: 50%

Option D: 71%

Correct Answer: 50% ✔

Option A: translational

Option B: rotational

Option C: vibrational

Option D: all of these

Correct Answer: vibrational ✔

Option A: Potato

Option B: Cabbage

Option C: Brinjal

Option D: Pumpkin

Correct Answer: ZAHID LAKHO ✔

Option A: cerebellum

Option B: cerebrum

Option C: hypothalamus

Option D: medulla

Correct Answer: hypothalamus ✔

Option A: Nephrology

Option B: Semiology

Option C: Orology

Option D: Cytology

Correct Answer: Cytology ✔

A. 10 Hz to 10,000 Hz.
B. 20 Hz to 20,000 Hz.
C. 30 Hz to 30,000 Hz.
D. 40 Hz to 40,000 Hz.

Submitted by: Muhammad Zubair

Correct Answer: B. 20 Hz to 20,000 Hz. ✔

Option A: 2%

Option B: 3%

Option C: 7%

Option D: 8%

Correct Answer: 2% ✔

Option A: chromosomes

Option B: pilli

Option C: plasmid

Option D: mesosome

Correct Answer: mesosome ✔

Option A: cartilage

Option B: bone

Option C: blood

Option D: all the above

Correct Answer: all the above ✔

Option A: 10,000,00

Option B: 100,000,000

Option C: 100,000,000,000

Option D: 1000

Correct Answer: 100,000,000 ✔

Option A: animals

Option B: plants

Option C: micro orgamnisms

Option D: all the above

Correct Answer: plants ✔

Option A: Parenchyma

Option B: collenchyma

Option C: sclerenchyma

Option D: none of these

Correct Answer: sclerenchyma ✔

Option A: Meristematic

Option B: Permanent

Option C: Epidermal

Option D: Supporting

Correct Answer: Permanent ✔

Option A: 2

Option B: 3

Option C: 4

Option D: None of these

Correct Answer: Muhammad Nawaz ✔

Option A: chlorine

Option B: hydrogen

Option C: oxygen

Option D: carbon dioxide

Correct Answer: chlorine ✔

Option A: smooth

Option B: rough

Option C: both

Option D: all of above

Correct Answer: smooth ✔

Option A: cell wall

Option B: cytoplasm

Option C: cell membrane

Option D: none of these

Correct Answer: cell membrane ✔

Option A: 10 times

Option B: 100 times

Option C: 1000 times

Option D: 10000 times

Correct Answer: 1000 times ✔

Option A: plant

Option B: bacterial

Option C: fungal

Option D: all the above

Correct Answer: all the above ✔

Option A: mitochondria

Option B: nucleus

Option C: chromosomes

Option D: ribosomes

Correct Answer: ribosomes ✔

Option A: chloroplast

Option B: chromoplast

Option C: leucoplast

Option D: All of these

Correct Answer: chloroplast ✔

Option A: cytodplasm

Option B: vacuoles

Option C: mitochondria

Option D: nucleus

Correct Answer: nucleus ✔

Option A: tonoplast

Option B: nuclear membrane

Option C: cell membrane

Option D: cell wall

Correct Answer: tonoplast ✔

Option A: S Phase

Option B: G1 Phase

Option C: G2 Phase

Option D: G0 Phase

Correct Answer: G2 Phase ✔

A. Corpus callosum
B. Medulla oblongata
C. Cerebral cortex
D. Cerebellum

Submitted by: Eesha Khalid

Correct Answer: Corpus callosum ✔

Option A: Kidney

Option B: Liver

Option C: Lungs

Option D: Heart

Correct Answer: Liver ✔

Option A: Liver

Option B: Kidney

Option C: Lungs

Option D: Heart

Correct Answer: Kidney ✔

Option A: Sandfly , butterfly, hoeybee

Option B: Sikmoth, honeybee, locust

Option C: Honeybee, silkmoth, tsetse fly

Option D: Honeybee , lac insect, cochineal insect

Correct Answer: Honeybee , lac insect, cochineal insect ✔

Option A: Wasp

Option B: Beetle

Option C: Cricket

Option D: Butterfly

Correct Answer: Butterfly ✔

Option A: Mite

Option B: Spider

Option C: Moth

Option D: Scorpion

Correct Answer: Moth ✔

Option A: Bedbug

Option B: Mosquito

Option C: Butterfly

Option D: Cockroach

Correct Answer: Butterfly ✔

Option A: Mycoxanthin, mucoxanthin and myxoxanthophylls

Option B: Alpha and beta carotenes and myxoxanthin

Option C: Fucoxanthin, diatoxanthin, diadinoxanthin

Option D: None of the above

Correct Answer: Fucoxanthin, diatoxanthin, diadinoxanthin ✔

Option A: Valve

Option B: Raphe

Option C: Pseudopodium

Option D: Cilia or flagella

Correct Answer: Raphe ✔

Option A: Fertilizers

Option B: Weedicides

Option C: Insecticides

Option D: Fire proof bricks

Correct Answer: Fire proof bricks ✔

Option A: Flagella

Option B: Stored lpids

Option C: Pseudopodia

Option D: All of these

Correct Answer: Stored lpids ✔

Option A: Diatoms

Option B: Slime moulds

Option C: Chlorophycean forms

Option D: None of the these

Correct Answer: Diatoms ✔

Option A: Chloryphyllpigments

Option B: Enzymes for photolysis

Option C: Defined grana and stroma

Option D: Carotenes with chlorophylls

Correct Answer: Defined grana and stroma ✔

Option A: Silica

Option B: Calcium carbonate

Option C: Manesium carbonate

Option D: Both B. and C.

Correct Answer: Silica ✔

Option A: Raphe

Option B: Valves

Option C: Frustule

Option D: Girdles

Correct Answer: Frustule ✔

Option A: Diatoms

Option B: Dinoflagellates

Option C: Slime moulds

Option D: None of these

Correct Answer: Diatoms ✔

Option A: Nonliving cells

Option B: Siliceous wall

Option C: Mucilaginous wall

Option D: Water proof cell

Correct Answer: Siliceous wall ✔

Option A: Diatoms

Option B: Desmids

Option C: Pyrrophyta

Option D: Chlorophyta

Correct Answer: Diatoms ✔

Option A: Rhodophyta

Option B: Phaeophyta

Option C: Baciliariophyta

Option D: Euglenophyta

Correct Answer: Baciliariophyta ✔

Option A: Diatioms

Option B: Heliozoans

Option C: Radiolarians

Option D: Foraminiferans

Correct Answer: Diatioms ✔

Option A: Diplaneis

Option B: Coscinodiscus

Option C: Camphyloneiscus

Option D: Stephanodis

Correct Answer: Coscinodiscus ✔

Option A: Phytoplanktonic population

Option B: Freshwater lakes and ponds

Option C: Marine environment

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Pinnularia, Navicula, Cymbella, Melosira

Option B: Euglenamorpha, Hedneria , Heteronema, Colacium

Option C: Nostoc, Anabaena, Aulosira, Cylindrospermum

Option D: Cochlodinium, Gymnodinium, Lenodinium, Peridinium

Correct Answer: Pinnularia, Navicula, Cymbella, Melosira ✔

Option A: Chrysophyta

Option B: Bacillariophyceae

Option C: Xanthophyceae

Option D: Both A. and B.

Correct Answer: D. Both A. and B. ✔

Option A: Diatoms

Option B: Radiolarians

Option C: Dinoflagellates

Option D: Foraminiferans

Correct Answer: Diatoms ✔

Option A: Mucocytes

Option B: Leucocytes

Option C: Oenocytes

Option D: Granulocytes

Correct Answer: Oenocytes ✔

Option A: Epidermis

Option B: Trichogen cell

Option C: Basement membrane

Option D: Malpighian cell

Correct Answer: Trichogen cell ✔

Option A: Epicuticle

Option B: Exocuticle

Option C: Endocuticle

Option D: All of these

Correct Answer: Exocuticle ✔

Option A: Epicuticle

Option B: Exocuticle

Option C: Endocuticle

Option D: All of these

Correct Answer: Epicuticle ✔

Option A: Ascaris

Option B: Bacteria

Option C: Ring worm

Option D: Suinea worm

Correct Answer: Suinea worm ✔

Option A: Arthropods

Option B: Chordata

Option C: Annelida

Option D: Echinodermata

Correct Answer: Arthropods ✔

Option A: Endodermis

Option B: Mesophyll

Option C: Chitin

Option D: Epidermis

Correct Answer: Epidermis ✔

Option A: 4

Option B: 2

Option C: 3

Option D: 6

Correct Answer: 3 ✔

Option A: Ligule

Option B: Radula

Option C: Mantle

Option D: Muscle

Correct Answer: Radula ✔

Option A: Cephalopodsxc

Option B: Gastropods

Option C: Bivalves

Option D: Athropods

Correct Answer: Gastropods ✔

Option A: Placenta

Option B: Notochord

Option C: Cranianta

Option D: Ligule

Correct Answer: Notochord ✔

Option A: 25,000

Option B: 50,000

Option C: 100,000

Option D: 10,00,000

Correct Answer: 50,000 ✔

Option A: Pisces

Option B: Craniata

Option C: Aves

Option D: Amphibia

Correct Answer: Craniata ✔

Option A: Frogs

Option B: Reptiles

Option C: Amphibinas

Option D: Jawless fishes

Correct Answer: Jawless fishes ✔

Option A: Cartilaginous fishes

Option B: Bony fishes

Option C: Running fishes

Option D: Jawless fishes

Correct Answer: Cartilaginous fishes ✔

Option A: External space

Option B: Internal Body cavity

Option C: In gut

Option D: In Bladder

Correct Answer: Internal Body cavity ✔

Option A: Nephrostome

Option B: Nephridiopore

Option C: Flame cell

Option D: Anus

Correct Answer: Nephrostome ✔

Option A: 80.50%

Option B: 90.50%

Option C: 95.50%

Option D: 99.50%

Correct Answer: 99.50% ✔

Option A: Glomerular filtrate

Option B: Filtrate passing through ascending limb

Option C: Filtrate passing through distal conveluted tubule

Option D: Filtrate passing through collecting tubules

Correct Answer: Glomerular filtrate ✔

Option A: Blood

Option B: Lymph

Option C: Gut

Option D: Hemolymph

Correct Answer: Hemolymph ✔

Option A: Nephrostome

Option B: Nephridiopore

Option C: Both of these

Option D: None of these

Correct Answer: Nephrostome ✔

Option A: Hydra

Option B: Planaria.

Option C: Humans

Option D: Birds.

Correct Answer: Birds. ✔

Option A: Hydrophytes

Option B: Mesophytes

Option C: Xerophytes

Option D: Halophytes

Correct Answer: Xerophytes ✔

Option A: Endotherms

Option B: Ectotherms

Option C: Heterotherms

Option D: Homeotherms

Correct Answer: Heterotherms ✔

Option A: Kidney surgery

Option B: Burring a hole and removing the stone manually (nephrolithotomy)

Option C: Extracorporeal Shock wave lithotripsy

Option D: None of these

Correct Answer: Extracorporeal Shock wave lithotripsy ✔

Option A: Afferent and efferent arterioles

Option B: Peritubualr capillaries

Option C: Vasa nervosa

Option D: Vasa recta

Correct Answer: Vasa recta ✔

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 ✔