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1) In chromosomes the material controlling heredity is: a. Histones b. DNA c. Chromocentres d. RNA
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2) Nuclein from nuclei of pus cells was separated by: a. Miescher b. Sutton c. Altmann d. None of these
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3) Chromosomal theory of inheritance was given by: a. Sutton b. Altmann c. Miescher d. All of these
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4) Spacer in chromosomes is associated with: a. H1 b. H3 c. H2a d. None of these
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5) Sperms do not have histones but they have a. A basic protein protamine b. Acid protein spermin c. Acid protein protamine d. None of these
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6) Which of these do not code for proteins: a. Operator b. Promotor c. Both (a) & (b) d. None of these
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7) An operon is constituted by: a. Operator genes b. Promotor genes c. Regulator genes d. All of these
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8) In positive regulation which of these genes are involved: a. Promotor b. Regulator c. Operator d. None of these
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9) Promotor gene is stimulated to interact with RNA polymerase on interacting with: a. CAP - cAMP b. ATP c. CMP d. None of these
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10) Which of these in operon inhibits transcription of mRNA on combining with repressor protein: a. Regulator gene b. Promotor gene c. Both (a) & (b) d. None of these
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11) In negative regulation which of these gene of operon is involved: a. Promotor b. Regulator c. Operator d. All of these
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12) In eukaryotes the regulation of genes involves: a. Chromosomal proteins b. Chormones c. Both (a) & (b) d. None of these
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13) Linkage was first suspected by: a. Bateson and Punnet b. Sutton and Boveri c. Beadle and Tatum d. All of these scientists
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14) Chromosomal theory of linkage was given by: a. Miescher b. Mendel c. Muller d. Morgan
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15) In test cross between hybrids of F1 generation of gray body long winged and black body vestigial winged parents Morgan found which of these ratios: a. 1:1:1:1 b. 25:25:25:25 c. 46:37:8:9 d. None of these
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16) Linkage is: a. Tendency of two genes to remain together during process of inheritance b. Tendency of two individual to remain together c. Tendency of two different chromosomes to remain together d. None of these
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17) Crossing over which means an exchange of segments between members of a homologous pair of chromosomes occurs during: a. Amitosis b. Mitosis c. Meiosis d. None of these
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18) Amount of DNA in all cell of body is: a. Constant b. Variable c. Constant or variable d. None of these
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19) Sutton and Boveri are associated with: a. Gene theory of inheritance b. Recapitulation theory c. Chromosomal theory of inheritance d. Continuity of germplasm
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20) Distance between two genes upon a chromosome is measured in cross over units which represent: a. Ratio of crossing over between them b. Percentage of crossing between them c. Number of other gene between them d. None of these
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21) In Morgan's experiment on linkage the recombinant types of test cross with F1, hybrids of gray body long winged and black body vestigial winged parents are: a. Gray body vestigial wings b. Black body long wings c. Both (a) & (b) d. None of these
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22) Percentage of recombinant types in Morgan's experiment was: a. 13% b. 17% c. 23% d. 27%
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23) Sponges are primitive multicellular animals having: a. Cellular grade of organization where there are no organs and systems b. Tissue grade of organization where there are organs and systems in the body c. Both of these patterns d. None of these patterns
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24) Animal nature of sponges was established by: a. Ellis b. Crant c. Huxley d. None of these
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25) Ellis established the animal nature of these animals on the basis of: a. Water current flowing constantly through their body b. Branched colonial pattern of their structure c. Presence of skeleton in their body d. None of these
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26) Which of these is true for sponges: a. Several mouths and only one exit chitinous spicules b. Chitinous spicules c. One mouth and several exits in the body d. A large stomach
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27) Who used the term porfera for sponges: a. Ellis b. Grant c. Huxley d. Sollas
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28) The study of morphology and physiology of sponges was done by: a. Grant b. Ellis c. Sollas d. None of these
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29) The term porifera means a. Presence of many pores in the body b. Presence of flagellated cells in body c. Present of mesogloea d. None of these
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30) The term 'parazoa' for sponges was used by: a. Sollas b. Grant c. Ellis d. None of these
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31) Sponges are : a. Bilaterally symmetrical b. Radially symmetrical c. Asymmetrical and radial d. Asymmetrical
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32) Which of these is not a name for sponge spicules: a. Monaxon b. Trixon c. Tetraxon d. Axon
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33) Canal system is characteristic of: a. Sponges b. Coelentrates c. Both (a) & (b) d. None of these
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34) Habitat of sponges is: a. Mostly marine b. Mostly fresh water c. Terrestrial d. None of these
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35) Fresh water sponges belong to the family: a. Arcellinidae b. Spongillidae c. Choristidae d. Asconidae
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36) A sponge can be distinguished from other animals by the presence of: a. Hollow body b. Dermal papillae c. Coelenteron d. Choanocytes
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37) Pinacocytes are found in the body of a. Sponges b. Snails c. Rabbits d. Hydras
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38) The cavity common to all types of canal systems is: a. Incurrent canal b. Excurrent canal c. Radial chamber d. Spongocoel
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39) Sponges possess: a. Epithelial tissue only b. No tissues c. Epithelial and connective tissues d. All four types of tissues
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40) Tissues are not found in: a. Corals b. Sponges c. Jelly-fishes d. Star-fishes
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41) Flagellated cells in sponges are called: a. Choanocytes b. Pinacocytes c. Porocytes d. Thesocytes
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42) Sponges are characterized by the presence of: a. Canal system b. Choanocytes c. One exit and many mouthlets d. All of these characters
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43) Canal system is found in which of these: a. Star-fishes b. Sponges c. Corals d. All of these
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44) Cells secreting calcareous spicules are called: a. Nematocysts b. Archacocytes c. Calcoblasts d. Desmocytes
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45) Cells forming siliceous spicules are called: a. Spongioblasts b. Calcoblasts c. Silicoblasts d. Osteoblasts
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46) Spongin fibres are secreted by which of these: a. Calcoblasts b. Silicoblasts c. Spongioblasts d. None of these
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47) Sleleton forming cells are called: a. Scleroblasts b. Cnidoblasts c. Collencytes d. Desmacytes
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48) Water enters the body of sponges through: a. Ostia b. Osculum c. Radial Canals d. Spongocoel
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49) Cells characteristic of sponges are: a. Nematocysts b. Choanocytes c. Epithelial cells d. Amoebocytes
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50) Choanocytes are present in sponges in: a. Inner layer b. Outer layer c. Both (a) & (b) d. None of these
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51) Cells ingesting food in Leucosolenia and other sponges are: a. Pinacocytes b. Choanocytes c. Porocytes d. Trophocytes
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52) Cells found only in sponges and not in other metazoa are: a. Nematocysts b. Nematoblasts c. Choanocytes d. Chondriocytes
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53) A sponge differs with other metazoa in having: a. Several mouthlets and one opening b. Nerve cells c. Absence of blood d. None of these
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54) Gemmules are formed for: a. Asexual reproduction b. Sexual reproduction c. Body growth d. Digestion
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55) Leucosolenia is: a. Sessile, colonial and fresh water form b. Sessile, colonial and marine form c. Sessile, solitary and marine d. Free living solitary and marine
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56) If carmine particles are placed in close association of living sponge, the these will: a. Be sucked into spongocoel b. Remain where they are c. Be carried away from osculum d. Rotate in a circle around osculum
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57) Locomotion does not occur in: a. Earthworm b. Leucosolenia c. Maggot of house fly d. Amoeba
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58) Gemmule formation in sponges is helpful in: a. A sexual reproduction b. Asexual reproduction c. Only dissemination d. None of these
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59) Canal system of Leucosolenia is: a. Asconoid b. Syconoid c. Leuonoid d. Rhagon type
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60) Which of these canal systems is found in Scypha: a. Syconoid b. Asconoid c. Leuconoid d. None of these
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