Biology MCQs

Option A: Osculum

Option B: Ostia

Option C: Spongocoel

Option D: None of these

Correct Answer: Osculum ✔

Option A: Amoeboid cell

Option B: Stipules

Option C: Spicules

Option D: Spines

Correct Answer: Amoeboid cell ✔

Option A: Calcium

Option B: Silica

Option C: Both of these

Option D: None of these

Correct Answer: Both of these ✔

Option A: Peritandrous

Option B: Pertandrous

Option C: Protendrous

Option D: Protandrous

Correct Answer: Protandrous ✔

Option A: Scolymastra joubini

Option B: Euplectella

Option C: Spongilla

Option D: Leucoselenia

Correct Answer: Scolymastra joubini ✔

Option A: To increase the size of the animals

Option B: To help in the functioning of reproductive system

Option C: To provide space for the development of organs and systems

Option D: None of these

Correct Answer: To provide space for the development of organs and systems ✔

Option A: Separate layers of cells

Option B: Structures formed from them

Option C: Structures associated with them

Option D: Their functions in body

Correct Answer: Structures formed from them ✔

Option A: Annelida

Option B: Arthropoda

Option C: Mollusea

Option D: Echinodermata

Correct Answer: Echinodermata ✔

Option A: Pseudocoelom

Option B: Enterocoelom

Option C: Schizocoelom

Option D: None of these

Correct Answer: Enterocoelom ✔

Option A: Arthropods

Option B: Hemichordates

Option C: Annelids

Option D: Molluses

Correct Answer: Hemichordates ✔

Option A: Pinacocytes

Option B: Choanoderm

Option C: Choanoytes

Option D: Pinacoderm

Correct Answer: Choanoytes ✔

Option A: Ectodermal

Option B: Mesodermal

Option C: Endodermal

Option D: None of these

Correct Answer: Mesodermal ✔

Option A: Ectoderm

Option B: Mesoderm

Option C: Endoderm

Option D: All of these

Correct Answer: Endoderm ✔

Option A: Stripules

Option B: Spicules

Option C: Brails

Option D: Spines

Correct Answer: Spicules ✔

Option A: Spicules

Option B: Choanocytes

Option C: Gemmules

Option D: None of these

Correct Answer: Gemmules ✔

Option A: Sycon

Option B: Euplectella

Option C: Leucoselenia

Option D: Spongilla

Correct Answer: Euplectella ✔

Option A: Ectodermal

Option B: Endodermal

Option C: Mesodermal

Option D: None of these

Correct Answer: Endodermal ✔

Option A: Excretory system

Option B: Nervous system

Option C: Transport system

Option D: All of these

Correct Answer: All of these ✔

Option A: Spiral and indeterminate

Option B: Radial and indeterminate

Option C: Radial and indeterminate

Option D: Spiral and determinate

Correct Answer: Spiral and determinate ✔

Option A: Diploblastic

Option B: Triploblastic

Option C: Both

Option D: Unicellular

Correct Answer: Diploblastic ✔

Option A: Anima

Option B: Anemia

Option C: Aname

Option D: All of these

Correct Answer: Anima ✔

Option A: Protozoans

Option B: Eumatazoa

Option C: Nematodes

Option D: Protoctist ancestors

Correct Answer: Nematodes ✔

Option A: Amphibians

Option B: Reptiles

Option C: Birds

Option D: Prototherians

Correct Answer: Reptiles ✔

Option A: Arthropoda

Option B: Gastropoda

Option C: Pelecypoda

Option D: Cephalopoda

Correct Answer: Cephalopoda ✔

Option A: Spiracles

Option B: Gills

Option C: Book lungs

Option D: Both b and c

Correct Answer: Both b and c ✔

Option A: Mesenchyme

Option B: Sclerenchyma

Option C: Chlorenchyma

Option D: Mesoderm

Correct Answer: Mesenchyme ✔

Option A: Spiral and determinate

Option B: Radial and indeterminate

Option C: Spiral and indeterminate

Option D: Radial and determinate

Correct Answer: Radial and indeterminate ✔

Option A: Pseudocoelous

Option B: Schizocoelous

Option C: Enterocoelous

Option D: Emphicoelous

Correct Answer: Schizocoelous ✔

Option A: All of them have blood vascular system

Option B: They may be coelomate pseudocoelomate or acoelomate

Option C: They are included in grade bilaterian

Option D: All of them have digestive system

Correct Answer: All of them have blood vascular system ✔

Option A: Protozoa

Option B: Porifera

Option C: Echinodermata

Option D: None of these

Correct Answer: Echinodermata ✔

Option A: Protozoa

Option B: Porifera

Option C: Cnidaria

Option D: All of these

Correct Answer: Cnidaria ✔

Option A: Deuterosomes

Option B: Proterosomes

Option C: Hemichordates

Option D: Aschelminthes

Correct Answer: Aschelminthes ✔

Option A: Nucleus

Option B: Chromosome

Option C: Chromatid

Option D: Chromatin body

Correct Answer: Chromatin body ✔

Option A: Purple

Option B: Red

Option C: Pink

Option D: Blue

Correct Answer: Purple ✔

Option A: Peptidoglycan

Option B: Proteins

Option C: Glycoproteins

Option D: Polysaccharides

Correct Answer: Peptidoglycan ✔

Option A: Cocci

Option B: Bacilli

Option C: Mycobacterium

Option D: Mycoplasma

Correct Answer: Mycoplasma ✔

Option A: Flagella

Option B: Pili

Option C: Both of these

Option D: None of these

Correct Answer: Pili ✔

Option A: Capsule

Option B: Slime

Option C: Cell Wall

Option D: Cell membrane

Correct Answer: Slime ✔

Option A: Cell membrane

Option B: Cell wall

Option C: Capsule

Option D: Basal body

Correct Answer: Basal body ✔

Option A: Lophotrichus

Option B: Monotrichous

Option C: Peritrichous

Option D: Amphitrichous

Correct Answer: Amphitrichous ✔

Option A: Cocci

Option B: Bacilli

Option C: Streptobacilli

Option D: Vibrio

Correct Answer: Cocci ✔

Option A: Necleotide

Option B: Plasmid

Option C: Mesosome

Option D: Ribosome

Correct Answer: Plasmid ✔

Option A: Glycogen

Option B: Lactic acid

Option C: Ammonia

Option D: Urea

Correct Answer: Lactic acid ✔

Option A: Campylobactor

Option B: spirocheta

Option C: E-coli

Option D: Pseudomonas

Correct Answer: Campylobactor ✔

Option A: Heterotrophic bacteria

Option B: Chemosynthetic bacteria

Option C: Photosynthetic bacteria

Option D: Saprotrophic bacteria

Correct Answer: Photosynthetic bacteria ✔

Option A: Heterotrophic bacteria

Option B: Chemosynthetic bacteria

Option C: Saprophytic bacteria

Option D: Parasitic bacteria

Correct Answer: Parasitic bacteria ✔

Option A: Hetrotrophic bacteria

Option B: Chemosynthetic bacteria

Option C: Saprophytic bacteria

Option D: Parasitic bacteria

Correct Answer: Chemosynthetic bacteria ✔

Option A: Aerobic bacteria

Option B: Anaerobic bacteria

Option C: Facultative bacteria

Option D: Microaerophilic

Correct Answer: Facultative bacteria ✔

Option A: Aerobic bacteria

Option B: Anaerobic bacteria

Option C: Facultative bacteria

Option D: Microaerophilic

Correct Answer: Anaerobic bacteria ✔

Option A: Lag phase

Option B: Log phase

Option C: Stationary phase

Option D: Death / decline phase

Correct Answer: Log phase ✔

Option A: Antiseptics

Option B: Disinfectants

Option C: Antibiotics

Option D: Vaccines

Correct Answer: Antiseptics ✔

Option A: Louis Pasteur

Option B: Edward Jennar

Option C: Leuvenhoek

Option D: Alexander Fleming

Correct Answer: Louis Pasteur ✔

Option A: Gram +ve.

Option B: Gram – ve.

Option C: Acid fast

Option D: Cellulose rich

Correct Answer: B. Gram – ve. ✔

Option A: Flagella

Option B: Gas vesicles

Option C: Both of these

Option D: None of these

Correct Answer: Gas vesicles ✔

Option A: Binary fission

Option B: Mitosis

Option C: Meiosis

Option D: Conjugation

Correct Answer: Binary fission ✔

Option A: 100

Option B: 200

Option C: 300

Option D: 400

Correct Answer: 200 ✔

Option A: Diplococci

Option B: Octococci

Option C: Tetrad

Option D: Sarcina

Correct Answer: Sarcina ✔

Option A: Vibrio

Option B: Spirillum

Option C: Spirochete

Option D: Coccus

Correct Answer: Spirillum ✔

Option A: Coccus

Option B: Bacillus

Option C: Vibrio

Option D: Spirochete

Correct Answer: Bacillus ✔

Option A: Diplobacillus

Option B: Sarcina

Option C: Egg

Option D: None of these

Correct Answer: Egg ✔

Option A: Escherichia coli

Option B: Spirochetes

Option C: Mycoplasma

Option D: Epulopiscuim

Correct Answer: Spirochetes ✔

Option A: 3

Option B: 5

Option C: 4

Option D: 6

Correct Answer: 4 ✔

Option A: Gram-ive bacteria

Option B: Eubacteria

Option C: Ancient bacteria

Option D: Gram +ive bacteria

Correct Answer: Ancient bacteria ✔

Option A: 0.1-600 um

Option B: 100-200 nm

Option C: 1.1-1.5 um (width) 2.0-6.0 um (length)

Option D: 0.75-1.25 um

Correct Answer: 1.1-1.5 um (width) 2.0-6.0 um (length) ✔

Option A: 0.1 -600 um

Option B: 100-200 nm

Option C: 500 um

Option D: 0.75-1.25 um

Correct Answer: 500 um ✔

Option A: Cell membrane

Option B: Chromatin bodies

Option C: Ribosomes

Option D: Capsule

Correct Answer: Capsule ✔

Option A: A specific organism can always be found in association with a given disease

Option B: The organism can be isolated and grown in pure culture in the laboratories

Option C: The pure culture cannot produce the disease when inoculated into susceptible animal however the causative organism isolated from pure culture can do so.

Option D: It is possible to recover the organism in pure culture from the experimentally infected animals

Correct Answer: The pure culture cannot produce the disease when inoculated into susceptible animal however the causative organism isolated from pure culture can do so. ✔

Option A: Robert Koch

Option B: Louis Pasteur

Option C: Alexander Fleming

Option D: Leeuwenhoek

Correct Answer: Leeuwenhoek ✔

Option A: Robert Koch

Option B: Louis Pasteur

Option C: Alexander Fleming

Option D: Leeuwenhoek

Correct Answer: Leeuwenhoek ✔

Option A: True bacteria

Option B: False bacteria

Option C: Recent bacteria

Option D: Ancient bacteria

Correct Answer: Ancient bacteria ✔

Option A: Rhodophyta

Option B: Chlorophyta

Option C: Phaeophyta

Option D: Chrysophyta

Correct Answer: Chlorophyta ✔

Option A: Their zygote unlike plants is protected by parental tissue

Option B: Their classification is based on pigment composition

Option C: Most of them have different morphological forms in-different stages of their life cycle

Option D: Almost all of them are aquatic

Correct Answer: Their zygote unlike plants is protected by parental tissue ✔

Option A: Kelps

Option B: Gymnosperms

Option C: Angiosperms

Option D: Algae

Correct Answer: Algae ✔

Option A: Radiolarians

Option B: Forams

Option C: Both of these

Option D: None of these

Correct Answer: Radiolarians ✔

Option A: Chrysophyta

Option B: Phaeophyta

Option C: Pyrrophyta

Option D: Rhodophyta

Correct Answer: Rhodophyta ✔

Option A: Actinopods

Option B: Foraminiferans

Option C: Apicomplexans

Option D: Radiolarians

Correct Answer: Foraminiferans ✔

Option A: Phaeophyta

Option B: Rhodophyta

Option C: Pyrrophyta

Option D: Chrysophyta

Correct Answer: Phaeophyta ✔

Option A: Pellicle

Option B: Penicle

Option C: Calcium

Option D: Cell wall

Correct Answer: Pellicle ✔

Option A: Chrysophyta

Option B: Phaeophyta

Option C: Pyrrophyta

Option D: Rhodophyta

Correct Answer: Chrysophyta ✔

Option A: Trichonymphas

Option B: Trypanosoma

Option C: Euglena

Option D: Radiolarians

Correct Answer: Trichonymphas ✔

Option A: Dinoflagellates

Option B: Zooflagellates

Option C: Protozoans

Option D: Algae

Correct Answer: Zooflagellates ✔

Option A: Ciliate

Option B: Foraniniferan

Option C: Actinopods

Option D: Apicomplexan

Correct Answer: Ciliate ✔

Option A: True

Option B: False

Option C: May be true may be false

Option D: Unpredictable

Correct Answer: False ✔

Option A: 27

Option B: 28

Option C: 26

Option D: 29

Correct Answer: 27 ✔

Option A: Unicellular

Option B: Multicellular

Option C: Both of these

Option D: Zooflagellates

Correct Answer: Unicellular ✔

Option A: Ciliates

Option B: Apicomplexans

Option C: Actinopods

Option D: Foraminferans

Correct Answer: Apicomplexans ✔

Option A: Diatoms

Option B: Euglenoids

Option C: Dinoflagellates

Option D: Brown algae

Correct Answer: Diatoms ✔

Option A: Zooflagellates

Option B: Foraminferans

Option C: Aetinopods

Option D: Apicomplexans

Correct Answer: Foraminferans ✔

Option A: Most of them are unicellular

Option B: They have blooms

Option C: Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium

Option D: None of these

Correct Answer: Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium ✔

Option A: Chondrus

Option B: Polysiphonia

Option C: Both of these

Option D: Pinnularia

Correct Answer: Both of these ✔

Option A: Contain mainly unicellular organisms.

Option B: Their contractile vacoule is respobsible for water regulation.

Option C: They are even capable of sexual reproduction.

Option D: Diploid nucleus being smaller is responsible for cells metabolism and growth while polyploidy nucleus functions in sexual process.

Correct Answer: Diploid nucleus being smaller is responsible for cells metabolism and growth while polyploidy nucleus functions in sexual process. ✔

Option A: Cellulose

Option B: Starch

Option C: Glycogen

Option D: All of these

Correct Answer: Starch ✔

Option A: Zooflagellates

Option B: Actinopods

Option C: Foraminifera

Option D: Apicomplexans

Correct Answer: Actinopods ✔

Option A: Some green algae possess cell wall with cellulose

Option B: They are generally accepted as the ancestors of green plants

Option C: Chlorella is unicellular non-motile green algae

Option D: None of these

Correct Answer: Some green algae possess cell wall with cellulose ✔

Option A: Zooflagellates

Option B: Choanflagellates

Option C: Trypanosomoa

Option D: Trichonymphas

Correct Answer: Choanflagellates ✔

Option A: Swarm cells

Option B: Biflagellated cells

Option C: Amoeboid reproductive cells

Option D: All of these

Correct Answer: All of these ✔

Option A: John Hogg

Option B: Ernst Haeckel

Option C: Margulis and Schwartz

Option D: Herbert Copeland

Correct Answer: Herbert Copeland ✔

Option A: Haploid

Option B: Diploid

Option C: Triploid

Option D: None of these

Correct Answer: Haploid ✔

Option A: Their members have characteristics which separate them from other kingdoms

Option B: They only include unicellular aquatic eukaryotic organisms

Option C: They do not develop from Blastula or embryo

Option D: They contain ancestors for fungi plants & animals

Correct Answer: They only include unicellular aquatic eukaryotic organisms ✔

Option A: Dinoflagellates

Option B: Kleps

Option C: Physarum polycephalum

Option D: Phytophthora infestans

Correct Answer: Phytophthora infestans ✔