5452. Tomato would not have turned red if__________________?
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A. They were kept at the bottom layer of box

B. Less heyhad been put in the box

C. They were mixed with ripe apples

D. There were no ripe apples in the box
5453. The seed of sunflower is called_________?
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A. Caryopsis

B. Samara

C. Phyxis

D. Achene
5455. Ribosomes are important because they help in __________________?
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A. Respiration

B. Growl

C. Movement

D. Protein synthesis
5456. Heterosis results due to____________________?
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A. Dominance

B. Epistasis

C. Overdominance

D. All the above
5457. Carbohydrates synthesis is carried out by ___________________?
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A. Mitochondria

B. Plastid

C. Golgi bodies

D. Ribosomes

5458. Pedigree selection is used in____________________?
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A. Cross pollinated plants

B. Self pollinated plants

C. For crosses at intervener level

D. Plant difficult to hybridized

5460. Duplication of chromosomes occurs during_________________?
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A. None of the above

B. Mitosis only

C. Mitosis and meiosis

D. Meiosis

5461. Absence of chlorophyll in a plant is known as__________________?
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A. Albinism

B. Acrodsome

C. A gouri

D. None of the above

5463. Whisky is distilled from__________________?
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A. Fermented juices of fruits

B. Raw grains

C. Legume fruits

D. Fermented mash of malted or unmalted cereals and potatoes
5464. Meiosis is significant because___________________?
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A. Occurs only in somatic

B. Restores original number of chromosomes

C. Produces identical cells

D. Doubling of DNA content in the cell

5465. Two allelie genes are located on_______________________?
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A. Two non homologous chromosomes

B. Same chromosomes

C. Two homologous chromosomes

D. Any two chromosomes with one each

5467. Seed is___________________?
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A. Developed egg after fertilization

B. Seveloped ovary after fertilization

C. None of the above

D. Transformcd ovary after fertilization
5469. Which are the necessary conditions for the hardy Weinberg principle for applying to genetic population________________?
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A. Selective mating and small population

B. No migration and large population

C. High mutation ratio and small population

D. Low mutation population

5471. Plastids bring about___________________?
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A. Excretion

B. Respiration

C. Secretion

D. Conversion of light energy into chemical energy
5472. Episodes may be factor in____________________?
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A. Dominance

B. Chromosomal inheritance

C. Cytoplasm inheritance

D. Incomplete dominance

5475. haploids are better for mutation studies because in them all the mutations whether recessive or dominant are expressed as_______________?
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A. There is only one alleles of each gene present in each cell

B. Non3e4 of the above

C. There are two alleles of each gene in each cell

D. There are many alleles of each gene in each call

5478. Which one of the following does not contain RNA_______________?
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A. Nuclcolus

B. Ribosomes

C. Plasmalemma

D. Chromosome

5480. All the individuals derived by vegetative propagation from a single individual is known as___________________?
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A. Affects more than one character

B. Affects only one character

C. Affects more than ten characters

D. Affects more than five characters
5481. Cytoplasm fills of the cavity of a cell when if is young. But in nature cells, the cytoplasm________________?
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A. Disappears completely

B. Becomes vacuolated

C. Contracts

D. Disintegrates partially

5482. The term vertical resistance and horizontal resistance were first used by________________________?
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A. Van der plank (1963)

B. Karpechenko (1927)

C. Hull (1945)

D. Correns (1900)

5484. Triticuin aestivuin is_________________?
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A. Hexaploid

B. Oetaploid

C. Teuaplioid

D. Triploid

5486. The first attempt to show linkage in plants were done in____________________?
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A. Another Lamarckian

B. Zeal Mays

C. Lathers odorous

D. Possum sativa

5487. Gene responsible for the synthesis of repressor is called__________________?
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A. Operator gene

B. Regulator gene

C. Structural gene

D. Promotor gene

5488. Liposomes originated from____________________?
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A. Leucoplasts

B. Mitochondria

C. Ribosomes

D. Plastids
5493. When two genes are situated very close together in a chromosome_____________________?
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A. Hardly any cross over are detected

B. Only double cross over can take place between them

C. No crossing ever can ever takes place between them

D. The percentage of crossing over between them is very

5495. The first organisms to appear on the earth were more like plants than animals because__________________?
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A. Plants can manufacture their own food material

B. None of the above

C. Plants are similar in structure

D. There are more plants than animals

5500. First intergeneric hybrid between radish and cabbage was made by__________________?
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A. Karechenko (1927)

B. Jones (1917)

C. Fray (1966)

D. Muller (1927)