Biology
601. The first bacterium isolated was _________ ?
a. Coccus
b. Bacillus
c. Vibrio
d. Spirochete
602. Which of the following bacteria are thick rigid and spiral ________ ?
a. Vibrio
b. Spirillum
c. Spirochete
d. Coccus
603. A group of 8 cocci is called ________ ?
a. Diplococci
b. Octococci
c. Tetrad
d. Sarcina
604. Approximately __________ species of bacteria are known to cause diseases in humans.
a. 100
b. 200
c. 300
d. 400
605. Cyanobacteria reproduce by _________ ?
a. Binary fission
b. Mitosis
c. Meiosis
d. Conjugation
606. Which of the following help cyanobacteria to locomote?
a. Flagella
b. Gas vesicles
c. Both of these
d. None of these
607. Cyanobacteria have ________ cell wall?
a. Gram +ve
b. Gram -ve
c. Acid fast
d. Cellulose
608. Who developed the vaccine against anthrax?
a. Louis Pasteur
b. Edward Jenner
c. Leeuwenhoek
d. Alexander Fleming
609. Chemical substances used on living tissues that inhibit the growth of microorganism are called _________ ?
a. Antiseptics
b. Disinfectants
c. Antibiotics
d. Vaccines
610. Rapid growth at exponential ration occurs in which phase of bacterial growth:
a. Lag phase
b. Log phase
c. Stationary phase
d. Death / decline phase
611. Spirochete is an example of _________ ?
a. Aerobic bacteria
b. Anaerobic bacteria
c. Facultative bacteria
d. Microaerophilic
612. E. coli and example of _________ ?
a. Aerobic bacteria
b. Anaerobic bacteria
c. Facultative bacteria
d. Microaerophilic
613. Nitrifying bacteria are the examples of ________ ?
a. Heterotrophic bacteria
b. Chemosynthetic bacteria
c. Saprophytic bacteria
d. Parasitic bacteria
614. Those bacteria which are fully dependent upon their host for nutrition are called _________ ?
a. Heterotrophic bacteria
b. Chemosynthetic bacteria
c. Saprophytic bacteria
d. Parasitic bacteria
615. Purple non-sulphur bacteria is an example of _________ ?
a. Heterotrophic bacteria
b. Chemosynthetic bacteria
c. Photosynthetic bacteria
d. Saprophytic bacteria
616. Example of bacteria requiring low concentration of oxygen is _________ ?
a. Campylobacter
b. Spirochete
c. E.coli
d. Pseudomonas
617. The common waste material in bacteria is _________ ?
a. Glycogen
b. Lactic acid
c. Ammonia
d. Urea
618. Which of the following contains genes for drug and disease resistance in bacteria?
a. Nucleotide
b. Plasmid
c. Mesosome
d. Ribosome
619. Which of the following bacteria do not have flagella commonly _________ ?
a. Cocci
b. Bacilli
c. Streptobacilli
d. Vibrio
620. A bacterium with tuft of flagella at both poles is called _________ ?
a. Lophotrichus
b. Monotrichous
c. Peritrichous
d. Amphitrichous
621. Flagella originate from _________ ?
a. Cell membrane
b. Cell wall
c. Capsule
d. Basal body
622. Which of the following structure provides greater pathogenicity to the bacteria ________ ?
a. Capsule
b. Slime
c. Cell Wall
d. Cell membrane
623. Which of the following structure primarily helps in attachment of bacteria on various surfaces _________ ?
a. Flagella
b. Pili
c. Both of these
d. None of these
624. Cell wall is absent in ________ ?
a. Cocci
b. Bacilli
c. Mycobacterium
d. Mycoplasma
625. Cell wall of Archaeobacteria does not contain _________ ?
a. Peptidoglycan
b. Proteins
c. Glycoproteins
d. Polysaccharides
626. Gram positive bacteria appear _________ ?
a. Purple
b. Red
c. Pink
d. Blue
627. Extremely long molecule of DNA that is tightly folded to fit inside the cell component is called _________ ?
a. Nucleus
b. Chromosome
c. Chromatid
d. Chromatin body
628. All of the following are coelomates except: _________ ?
a. Deuterostomes
b. Proterosomes
c. Hemichordates
d. Aschelminthes
629. The radial symmetry is found in the animals of _________ ?
a. Protozoa
b. Porifera
c. Cnidaria
d. All of these
630. Both radial and bilateral symmetry is found in the phylum ________ ?
a. Protozoa
b. Porifera
c. Echinodermata
d. None of these
631. Of the following which one is not the characteristic of triploblasts?
a. All of them have blood vascular system
b. They may be coelomate pseudocoelomate or acoelomate
c. They are included in grade bilaterian
d. All of them have digestive system
632. The animals in which coelom is formed due to splitting of mesoderm are known as _________ ?
a. Pseudocoelous
b. Schizocoelous
c. Enterocoelous
d. Emphicoelous
633. In some cases the blastomere can produce complete embryo the cleavage will be _________ ?
a. Spiral and determinate
b. Radial and indeterminate
c. Spiral and indeterminate
d. Radial and determinate
634. Of the following which one is non-cellular in most cases in animals?
a. Mesenchyme
b. Sclerenchyma
c. Chlorenchyma
d. Mesoderm
635. Aquatic arthropods respire through _________ ?
a. Spiracles
b. Gills
c. Book lungs
d. Both b and c
636. Circulatory system is open type in all of the following except: _________ ?
a. Arthropoda
b. Gastropoda
c. Pelecypoda
d. Cephalopoda
637. Shell of egg is leathery in appearance in __________ ?
a. Amphibians
b. Reptiles
c. Birds
d. Prototherians
638. Aschelminthes is also known as __________ ?
a. Protozoans
b. Eumatazoa
c. Nematodes
d. Protoctist ancestors
639. The name animal is derived from the word _________ ?
a. Anima
b. Anemia
c. Aname
d. All of these
640. All the animals of the grade radiata are _________ ?
a. Diploblastic
b. Triploblastic
c. Both
d. Unicellular
641. The fate each blastomere is foretold. The cleavage will be as _________ ?
a. Spiral and indeterminate
b. Radial and indeterminate
c. Radial and determinate
d. Spiral and determinate
642. The system well developed in the acoelomate is _________ ?
a. Excretory system
b. Nervous system
c. Transport system
d. All of these
643. In acoelomates gut is _________ in origin.
a. Ectodermal
b. Endodermal
c. Mesodermal
d. None of these
644. Venus flower basket is also known as _________ ?
a. Sycon
b. Euplectella
c. Leucoselenia
d. Spongilla
645. The internal buds are known as ________ ?
a. Spicules
b. Choanocytes
c. Gemmules
d. None of these
646. The skeleton of the sponges is in the form of variously shaped needle ike structures called _________ ?
a. Stripules
b. Spicules
c. Brails
d. Spines
647. Gut in pseudocoelomates is made from ________ ?
a. Ectoderm
b. Mesoderm
c. Endoderm
d. All of these
648. Sperms are ________ in origin.
a. Ectodermal
b. Mesodermal
c. Endodermal
d. None of these
649. Inner layers of the sponges are made up of __________ ?
a. Pinacocytes
b. Choanoderm
c. Choanocytes
d. Pinacoderm
650. Of the following which one is not included in Proterostomes?
a. Arthropods
b. Hemichordates
c. Annelids
d. Molluses
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