biology Mcqs
601. The sponges in which sperms develop first are included in the category of__________?
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A. Protendrous

B. Peritandrous

C. Pertandrous

D. Protandrous
602. Which of the following fishes contained lungs?
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A. Perch

B. Lamprey

C. Plaice

D. Dipnoi
603. Tobacco mosaic virus is__________?
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A. Rod Shaped

B. Hexagonal

C. Spherical

D. Tadpole like

604. Magnesium is present in which of the following__________________?
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A. ATP

B. Haemoglobin

C. Cytochromes

D. Chlorophyll
605. Which of the following virus has special affiliations with the tumor production:
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A. Retrovirus

B. Polio virus

C. Pox virus

D. Hepatitis virus

606. Who discovered the bacteria causing tuberculosis and also developed various techniques of media preparation and maintenance of pure culture_____________?
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A. Louis Pasteur

B. Robert Koch

C. Leeuwenhoek

D. Alexander Fleming

607. Of the following, which one has more variety of nutrition________________?
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A. Animals

B. Plants

C. Fungi

D. Bacteria

608. Which of the following is an RNA virus:
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A. Influenza virus

B. Herpes virus

C. Pox virus

D. HBV

609. Root like structure in saprotrophic fungi are called_______________?
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A. Rhizodis

B. Constricting rings

C. Hyphae

D. Haustoria

610. How many species of fungi are known till now?
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A. 10000000

B. 1000

C. 100000

D. 10000

611. Circulatory system is open type in all of the following except:___________?
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A. Arthropoda

B. Gastropoda

C. Pelecypoda

D. Cephalopoda
612. A sponge of Antarctica which is more than a meter tall is____________?
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A. Leucoselenia

B. Euplectella

C. Spongilla

D. Scolymastra joubini
613. The name Bacteriophage was coined by____________?
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A. Charles Chamberland

B. D Herelle

C. Twort

D. Ivanowski

614. Exoskeoeton of coelenterates terates is made up to__________?
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A. Calcium

B. Silica

C. Chitin

D. Both A & B

615. Both radial and bilateral symmetry is found in the phylum____________?
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A. None of these

B. Porifera

C. Protozoa

D. Echinodermata
616. Puccinia is a parasitic___________?
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A. Fungus

B. Animal

C. Plant

D. Algae

617. All of the following are true for Platyhelminthes except____________?
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A. Triploblastic

B. Coelomate

C. Flatwarms

D. Bilateral symmetry

618. Aquatic arthropods respire through__________?
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A. Spiracles

B. Gills

C. Book lungs

D. Both b and c
619. Of the following which one is not the characteristic of dinoflagellates?
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A. None of these

B. They have blooms

C. Most of them are unicellular

D. Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium
620. E. coli and example of____________?
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A. Aerobic bacteria

B. Anaerobic bacteria

C. Facultative bacteria

D. Microaerophilic

621. Venus flower basket is also known as___________?
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A. Sycon

B. Spongilla

C. Leucoselenia

D. Euplectella
622. The system well developed in the acoelomate is___________?
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A. All of these

B. Transport system

C. Nervous system

D. Excretory system

623. Who first separated bacteria from other protists as a group_____________?
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A. Ernst Haeckel

B. John Hogg

C. Margulis and Schwartz

D. Herbert Copeland
624. In lysogenic cycle the process of spearation of phage DNA from the hosts chromosome and initiation of lytic cycle is called______________?
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A. Lysis

B. Induction

C. Lysogeny

D. Adsorption

625. Parasitic fungi absorb nutrients directly from the living host cytoplasm with the help of special hyphal tips called___________?
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A. Constricting ring

B. All of these

C. Haustoria

D. Mildew

626. Which of the following structure primarily helps in attachment of bacteria on various surfaces____________?
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A. Flagella

B. Pili

C. Both of these

D. None of these

627. Foliose lichen are_____________?
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A. Branching

B. Leaf like

C. Crust like

D. Stem like

628. Which of the following contains genes for drug and disease resistance in bacteria?
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A. Plasmid

B. Mesosome

C. Necleotide

D. Ribosome

629. Which of the following structure provides greater pathogenicity to the bacteria__________?
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A. Capsule

B. Slime

C. Cell membrane

D. Cell Wall

630. All of the insectivorous plants are true________________?
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A. Autotrophes

B. Carnivores

C. Saprotrophs

D. Heterotrophs

631. Which of the following is an example of the living member of Psilopsida________________?
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A. Rhynia

B. Psilophyton

C. Cooksonia

D. Psilotum
632. Stentor is a/an____________?
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A. Apicomplexan

B. Ciliate

C. Actinopods

D. Foraniniferan

633. In slime molds spores develop into__________?
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A. Swarm cells

B. Biflagellated cells

C. Amoeboid reproductive cells

D. All of these
634. Loss of appetite due to the fear of becoming obese is____________?
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A. Dyspepsia

B. Anorexia nervosa

C. Bulimia nervosa

D. Piles

635. The one which is present in all aerobic species is _________?
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A. Cytochrome a3

B. Cytochrome b

C. Cytochrome a

D. Cytohrome c
636. Most of the photosynthesis on earth is carried by__________?
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A. Kelps

B. Algae

C. Angiosperms

D. Gymnosperms

637. All the animals of the grade radiata are____________?
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A. Both

B. Unicellular

C. Triploblastic

D. Diploblastic
638. Constricting ring around nematode is formed by_____________?
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A. Arthrobotrys

B. All of these

C. Pleurotus ostreatus

D. Mildews

639. Death cap/death angel (Amanita) and Jack O Latern mushroom are examples of__________?
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A. Edible mushrooms

B. Poisonous mushrooms

C. Both of these

D. None of these

640. Sperms released in water are carried to the mesenchyme in sponges by__________?
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A. Stipules

B. Spines

C. Spicules

D. Amoeboid cell
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