biology Mcqs
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

661. Mycorrhizae are found in about__________vascular plants?
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A. 95%

B. 98%

C. 96%

D. 90%

662. Lime stone deposits are formed from__________?
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A. Zooflagellates

B. Foraminferans

C. Aetinopods

D. Apicomplexans

663. Spores in sporangia are produced by process?
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A. Sexual

B. Asexual

C. Both of these

D. None of these

664. How many species of mushrooms are edible?
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A. 3000

B. 200

C. 4000

D. 100

665. The partly digested food is stored in________in cockroach?
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A. Hepatic caeca

B. Rectum

C. Crop

D. Gizzard

666. The drfinite shape to ciliates is given by____________?
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A. Penicle

B. Calcium

C. Pellicle

D. Cell wall

667. True metamorphosis is not present in________?
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A. Arachnida

B. Crustacea

C. Insecta

D. Myriapoda

668. Approximately _____ species of bacteria are known to cause diseases in humans.
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A. 400

B. 200

C. 300

D. 100

669. Sperms are _________ in origin.
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A. Mesodermal

B. Endodermal

C. Ectodermal

D. None of these

670. Of the following which one has glassy shells________________?
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A. Radiolarians

B. Forams

C. Both of these

D. None of these

671. Lichen is a symbiotic mutualistic association of fungi with______________?
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A. Leguminous plants

B. Autotrophs

C. Roots of vascular plants

D. Green algae and cyanobacterium
672. Hydra is an example of ______________ feeder?
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A. All of these

B. Macrophagous

C. Fluid

D. Fluid

673. Type of lichen which tightly attaches to rocks is_____________?
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A. Parmelia

B. Fruticose

C. Foliose

D. Crustose
674. Masses of dilated tortuous veins in the anorectal mucosa are known as___________?
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A. Hemorrhoids

B. Bulimia

C. Adipose tissue

D. Ulcer

675. The function of coelom is__________?
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A. None of these

B. To help in the functioning of reproductive system

C. To increase the size of the animals

D. To provide space for the development of organs and systems
676. Mantle in molluscs is present over____________?
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A. Head

B. Dorsal visceral region

C. All of these

D. Ventral muscular foot

677. In which of the following example of fungi dikaryotic hyphae exist for long period?
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A. Deuteromycota

B. Basidiomycota

C. All of these

D. Zygomycota

678. The name animal is derived from the word__________?
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A. Anima

B. All of these

C. Aname

D. Anemia

679. Rapid growth at exponential ration occurs in which phase of bacterial growth:
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A. Stationary phase

B. Death / decline phase

C. Lag phase

D. Log phase
680. Vaccine Was discovered by______________?
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A. Stanely

B. Ivanowski

C. Edward Jennar

D. Louis Pasteur

681. Inner layers of the sponges are made up of__________?
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A. Choanoytes

B. Pinacoderm

C. Pinacocytes

D. Choanoderm

682. Examples of Rhodophytes are___________?
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A. Chondrus

B. Polysiphonia

C. Both of these

D. Pinnularia

683. Unicellular fungi which is non-hyphal is___________?
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A. Penicillium

B. Mold

C. Yeast

D. Mushroom

684. Plasmodium belongs to__________?
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A. Actinopods

B. Apicomplexans

C. Ciliates

D. Foraminferans

685. Gut in pseudocoelomates is made from___________?
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A. Endoderm

B. All of these

C. Ectoderm

D. Mesoderm

686. Coelom is lined by__________?
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A. Parietal mesoderm

B. Visceral mesoderm

C. Mesoderm

D. Both A & B
687. Complex symptoms like severe pneumonia vascular tumor sudden weight loss swollen lymph nodes and immune deficiency are features of:
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A. Polio

B. Hepatitis

C. HIV

D. AIDS
688. What percentage of light reaching the earth is used in photosynthesis?
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A. 5%

B. 10%

C. 1%

D. 25%

689. Which of the following bacteria do not have flagella commonly__________?
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A. Bacilli

B. Streptobacilli

C. Vibrio

D. Cocci
690. Fungi which get their food directly from dead organic matter are called______________?
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A. Predators

B. Mutualists

C. Parasitic fungi

D. Decomposers
691. Carbohydrates, fats & proteins are essential for_______________?
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A. All of these

B. Metabolic processes of an organism

C. Formation of sturctures

D. Providing energy

692. Spores produced by slime molds are__________?
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A. Triploid

B. None of these

C. Haploid

D. Diploid

693. The number of chromosomes in human cell is_____________?
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A. 26

B. 46

C. 48

D. 44

694. Coenocytic hyphae are also known as______________?
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A. Perforated hyphae

B. Aseptate

C. Uninucleate hyphae

D. Septate

695. Brown algae are also known as___________?
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A. Chrysophyta

B. Pyrrophyta

C. Phaeophyta

D. Rhodophyta

696. Which of the following of bryophytes are the simplest one?
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A. Funaria

B. Porella

C. Polytrichum

D. Anthocerus

697. The fate of each blastomere is foretold. The cleavage will be as____________?
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A. Spiral and determinate

B. Radial and indeterminate

C. Spiral and indeterminate

D. Radial and indeterminate

698. The agent of controversial nature causing mad cow infection is_____________?
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A. Cowpox Virus

B. Adenovirus

C. Prion

D. Bacteria

699. prokaryotic and eukaryotic are two types of___________?
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A. organs

B. organisms

C. cells

D. tissues

700. Parasites capable of living independently of its host at times is called as ___________ parasite?
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A. Strict

B. Obligate

C. Facultative

D. Endoparasite