1) Cells intercommunicates with neighbouring cells by_________________? a. Plasmedesmata b. Plasmedesmata c. Trachieds d. Nessels
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2) Male sterility in flowering plant was first reported by___________________? a. Stout (1917) b. Koelreuter (1763) c. Brewbaker (1810) d. Gerstel (1900)
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3) Breeder seed is the progeny of__________________? a. Cenified seed b. Nucleus seed c. Foundation d. Registered seed
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4) Gene for gene hypothesis was proposed by__________________? a. Nelson (1973) b. Flor (1956) c. Robinson (1971) d. Vander plank (1963)
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5) Heterosis results due to____________________? a. Dominance b. Overdominance c. Epistasis d. All the above
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6) capsicum is a rich source of___________________? a. Vitamin A b. Vitamin C c. Vitamin D d. None of the above
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7) Two allelie genes are located on_______________________? a. Two homologous chromosomes b. Two non homologous chromosomes c. Any two chromosomes with one each d. Same chromosomes
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8) If a plant is heterozygousand is designated (BbMm)and produces two kinds of gametes either (BM)or (bm), then the possibility of (bm) gametes fertilizing either (BM) or (bm) is_________________? a. Half b. 0/1 c. 1/1 d. 1/4
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9) Diagrammatic representation of the chromosomes of an organism arranged according to their size is called_____________________? a. Ideogram b. Gene map c. Karyotype d. Phenotype
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10) The process of transfer and deletion of several gene is_____________________? a. Gene mutation b. Chromosomal mutation c. Monoploldy d. Synapsis
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11) Maize has 10 pairs of chromosomes. how many linkage groups will be present if all the genes are mapped__________________? a. 10 b. 20 c. 20 d. 20
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12) An individual with two identical members of a part of geneue factors is called__________________? a. Hybrid b. Homozygous c. Heterozygous d. Dominant
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13) Plants can be made disease resistant by___________________? a. Colchicines treatment b. Heat treatment c. Breeding with the wild variety d. Hormone spray
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14) The first organisms to appear on the earth were more like plants than animals because__________________? a. Plants can manufacture their own food material b. There are more plants than animals c. Plants are similar in structure d. None of the above
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15) Evolution proceed on account of____________________? a. Conversion pf organism to change of environment b. Fossils c. Adaptations through genervation d. Struggle for existence
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16) Organic evolution through large discontinuous variations was propound by__________________? a. Mendel b. Darwin c. Huge and Vnes d. Lamak
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17) One of the persons whose evolutionary ideas were close to that of Laraarcd was____________________? a. Lysendo b. Vavilow c. Weismann d. H be vnes
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18) When an albino plant of maize (female) is crossed with normal green plant (male) all plants in the progeny are albino because___________________? a. Albinism is dominant over green characters b. Green plastids of male parent become nitrated c. Plastids are inherited through maternal parents d. Crossing over results in structural changes in green plastids
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19) Number of lindage groups of chromosomes____________________? a. Diploid number of chromosomes b. Tetraploid number of chromosomes c. Haploid number of chromosomes d. None of the above
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20) One of the following is not an advantage of genetic engineering___________________? a. Microbes act as biological factories b. Improvement of crop can take place c. The gene pool is maintained d. Genetic error can be rectified
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