biology MCQs – Page 33

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 Review each marked answer and report any item that may be outdated or unclear.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
641. Which one of the following is the largest group of fungi?
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A. Basidiomycota

B. Deuteromycota

C. Zygomycota

D. Ascomycota
642. Which of the following help cyanobacteria to locomote?
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A. Flagella

B. Gas vesicles

C. Both of these

D. None of these

643. Cell wall is absent in___________?
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A. Bacilli

B. Cocci

C. Mycoplasma

D. Mycobacterium

644. Of the following which one is non-cellular in most cases in animals?
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A. Chlorenchyma

B. Sclerenchyma

C. Mesoderm

D. Mesenchyme
645. Mode of nutrition in penecillium is____________?
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A. Mutualistics

B. Parasitic

C. Saprotrophs

D. Predators

646. Most dinoflagellates are___________?
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A. Unicellular

B. Multicellular

C. Both of these

D. Zooflagellates

647. Pseudocoelem develops from____________?
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A. Blastocoel

B. Splitting of mesoderm

C. Plastoquinone

D. Blastopore

648. Stunted growth of roots is due to the deficiency of____________in plants?
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A. Magnesium

B. Potassium

C. Iron.

D. Phosphorus
649. Which of the following is the smallest known virus:
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A. Polio virus

B. Hepatitis virus

C. Pox virus

D. Retrovirus

650. An association in which fungal hyphae penetrate the outer cells of the plant root forming coils swellings and minute branches and also extend out into surrounding soil is called______________?
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A. Mycorrizael association

B. Endomycorrhizae

C. Lichen

D. Ectomycorrhizae

651. The size of Spirochete is_____________?
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A. 0.1 -600 um

B. 0.75-1.25 um

C. 500 um

D. 100-200 nm

652. A virion is______________?
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A. Viral lysozyme

B. Viral protein

C. Virus

D. Viral gene

653. The single main opening of the sponge cavity is____________?
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A. Osculum

B. Ostia

C. None of these

D. Spongocoel

654. _______ are the first group of invertebrates which have developed a closed circulatory system.
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A. Arthropods

B. Annelids

C. Molluscs

D. Nematods

655. Extremely long molecule of DNA that is tightly folded to fit inside the cell component is called_____________?
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A. Nucleus

B. Chromatid

C. Chromosome

D. Chromatin body
656. Coccobacillus has a shape similar to________________?
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A. Diplobacillus

B. None of these

C. Egg

D. Sarcina

657. Hunger contractions are _____ contractions?
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A. Voluntary

B. Antiperistalsis

C. None of these

D. Peristalsis
658. Cell wass of Archaeobacteria does not contain_____________________?
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A. Peptidoglycan

B. Proteins

C. Polysaccharides

D. Glycoproteins

659. Radiolarians belong to which of the following protozoal group____________?
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A. Apicomplexans

B. Actinopods

C. Foraminifera

D. Zooflagellates

660. At which stage in the life cycle of Rhizopus meiosis takes place?
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A. Fusion of two hyphae

B. Formation of sporangiophore via germination of zygospore.

C. Formation of Zygote by fusion of gametangia.

D. Formation of spores in sporangia