Microsoft word - test of biology-iii

TEST OF BIOLOGY
The minimum number of components required for an ecosystem to survive Opening of a flower and drooping of a bud are examples of (a) beneath the piameter (b) between piameter and arachnoid and mater (c) berween arachnoid and duramater (d) in extra duramater (e) between the duramater and cranium In which of these would you find white fibrous tissue in abudance? Which one of the following pairs is correctly matched (a) ribosomal RNA – carries aminoacids to the site of protein synthesis (b) transcription – process by which protien is synthesis (c) translation – process by which m RNA carries the information from nucleus to the ribosome (d) anticodon – site of t RNA molecule that contains complementary bases to the triple code on Polytene chromosomes in salivery glands of Drosophila are formed as a result of (c) replication of DNA without cell division The diagrams represents the Miller’s experiment. Choose the correct combination of labeling (a) A- electrodes, B-NH3 + H2 + H2O+ C- Cold water, D-vaccum, E-U trap (b) A- electrodes, B- NH4 + H2 + CO2+ CH3, C - Hot water, D-vaccum, E-U trap (c) A- electrodes, B- NH3 +H2O+ C- hot water, D-tap, E-U trap (d) A- electrodes, B- NH3 + H2 + H2O+ CH4, C- steam, D-vaccum, E-U trap (e) A- electrodes, B- NH3 + CH4,C- Cold water, D-sink, E-U trap 10. Name of the drug used in cancer treatment produced by using biotechnology is (a) circinate venation (b) reticulate venation 13. What do mean by the term spermateleosis? (a) conversion of spermatids to sperms (b) conversion of spermogonium to spermatid (c) conversion of the spermatid to spermogonium (d) conversion of the primary spermatocyte to secondary spermatocyte 14. First hormone prepared by genetic engineering is 15. Bordeaux mixture can be prepared by mixing the copper sulphate with (a) Sodium chloride (b) milk of calcium hydroxide (a) hereditary DNA of bacterial cell (b) extra chromosomal hereditary material of bacteria associated with nucleoid (c) modification of the cell membrane performing respiration (d) None of these 19. Father of green revolution in India is 20. The vacuole in the plant cell contains 21. Which of these is not essential for allogamy? (a) thick cell wall and large intercellular spaces (b) thick cell wall and no intercellular spaces (c) thin cell wall and large intercellular spaces (d) thin cell wall and no intercellular spaces 23. The chemical fertilizer is present in 24. Which of the following organism is useful for us? 25. Function of embryonal suspensor in angiosperms is to (c) release growth hormones (d) transfer nutrients from parent sporophyte to young embryo 26. Mode of DNA replication in E.coli is (b) semi conservative and unidirectional 27. Saprobiotic and parastic modes in nutrition are found in 28. Respective haploid and monoploid numbers of choromosomes of Hexaploid wheat are 29. Chromosome having centromere in its middle is 31. Which of the following on correct sequence of layers in typical monocot root (from outer (a) pericycle, cortex, endodermis, epiblema (b) epiblema, endodermis, cortex, pericycle (d) epiblema, endodermis, cortex, pericycle (d) epiblema, pericycle cortex, endodermis (a) endoreduplication of chromosomes (b) somatic pairing of homologous chromo somes (c) somatic pairing of non-homologous chromosomes (d) germinal pairing of non homologous chromosomes 33. Chloragogen cells resemble the following in function 35. Which one of the following part is an endocrine gland? 36. Essentially the word ‘digestion’ means (c) hydrolysis of food (d) breakdown of food 37. In transgenics, expression of transgene in target tissue is determined by 38. Organs which have the same fundamental structure but are different in functions are called (c) analogous organs (d) homoplastic organs 39. Which of the following conditions is responsible for increase in ventilation rate of lungs? (a) increase of CO2 content in inhaled air (b) increase of CO2 content in exhaled air (c) decrease in O2 content of inhaled air (d) decrease in O2 content of exhaled air 40. In life cycle of Plasmodium, exflagellation is seen in 41. Which one is false about kranz anatomy? (a) bundle sheath have large chloroplast and less developed grana (b) mesophyll cells have large chloroplast and more developed grana (c) it is found in Atriplex, sugarcane, maize (d) plant having it have better photosynthesizing power than (c) plants 42. The first work on genetics was done by 43. Percentage of heterozygous individuals obtained from selfing of Rr individuals is 44. A chromosome with sub-terminal centromere is (a) all the linked genes of a chromosomal pair (b) different groups of genes present on different chromosomes (c) all the genes located on the same chromosome (d) None of the above 46. Aneuploidy is the term applied for the (a) gene mutation (b) chromosomal mutation (c) chromosomal mutations involving the addition or loss of one or more chromosome (d) chromosomal mutation involving the addition of one or more complete set of chromosomes 47. Maize with 10 pairs of chromosomes has linkage groups 48. Mendel could not find recombination and crossing over as (a) traits he chose were either present on different chromosomes or were far apart (b) traits chosen by him were not influcenced by genes (c) he did not have a high power microscope (d) he selected only pure types 49. Sickle cell anaemia is an example of 50. Ratio between mortality and natality is ANSWER KEYS

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