CSS Agriculture Questions & Answers - Part-1 - Set 11

1)   Population improvement is used:

a. To accumulate deleterious alleles
b. To maintain homozygosity
c. To accumulate favourable alleles
d. To increase heterozygosity
Answer  Explanation 

ANSWER: To accumulate favourable alleles

Explanation:
No explanation is available for this question!


2)   Pototo and Jerusalem artichoke are example of:

a. Rhizome
b. Tuber
c. Bulb
d. Corn
Answer  Explanation 

ANSWER: Tuber

Explanation:
No explanation is available for this question!


3)   Probably the most useful measurable property in the soil -plant-air system is:

a. Matric Potential
b. Water Potential
c. Osmotic Potential
d. Redox Potential
Answer  Explanation 

ANSWER: Water Potential

Explanation:
No explanation is available for this question!


4)   Progeny of a hybrid plant:

a. Breds true
b. Resembles maternal plant
c. Resembles paternal plant
d. Segregation
Answer  Explanation 

ANSWER: Segregation

Explanation:
No explanation is available for this question!


5)   Prop or still roots are found in:

a. Acacia tree
b. Tomato plant
c. Mango tree
d. Banyan tree
Answer  Explanation 

ANSWER: Banyan tree

Explanation:
No explanation is available for this question!


6)   Protoplasm is a:

a. True solution
b. Unsaturated solution
c. Suspension
d. Polyphonic colloidal system
Answer  Explanation 

ANSWER: Polyphonic colloidal system

Explanation:
No explanation is available for this question!


7)   Pseudo-fertility may also occur late in the season as in:

a. Tomato
b. Tobacco
c. Tapioca
d. Tea
Answer  Explanation 

ANSWER: Tobacco

Explanation:
No explanation is available for this question!


8)   Pure line is:

a. The progeny of selfed heterozygous plant
b. The progeny of selfed homozygous plant
c. The progeny of vegetatively progagated plant
d. The progeny of a nucleus seed
Answer  Explanation 

ANSWER: The progeny of selfed homozygous plant

Explanation:
No explanation is available for this question!


9)   Pureline selection is:

a. A method of accumulating favourable alleles
b. Used to improve cross-pollinated crops
c. Used to improve self-pollinated crops
d. Used in vegetatively propagated crops
Answer  Explanation 

ANSWER: Used to improve self-pollinated crops

Explanation:
No explanation is available for this question!


10)   Quarantine is:

a. The name of a plant
b. The name of a character
c. The process of observation of alien material
d. None of the above
Answer  Explanation 

ANSWER: The process of observation of alien material

Explanation:
No explanation is available for this question!


11)   Rainfall, temperature, light, wind and humidity are:

a. Climatic factors
b. Edaphic factors
c. Biotic factors
d. Topographic factors
Answer  Explanation 

ANSWER: Climatic factors

Explanation:
No explanation is available for this question!


12)   Random assortment of genes will occur if the gene are located on:

a. Same chromosome
b. Different chromosomes
c. Sex chromosome
d. Autosome
Answer  Explanation 

ANSWER: Different chromosomes

Explanation:
No explanation is available for this question!


13)   Recessive lethal genes are carried in the:

a. Heterogenous form
b. Hetrozygous form
c. Homozygous form
d. Homogenous form
Answer  Explanation 

ANSWER: Hetrozygous form

Explanation:
No explanation is available for this question!


14)   Recurrent selection is mostly used in:

a. Cross pollinated crops
b. Self pollinated crops
c. Vegetatively propagated crops
d. Apomictic crop plants
Answer  Explanation 

ANSWER: Cross pollinated crops

Explanation:
No explanation is available for this question!


15)   Reduction Division in micro-sporogenesis occurs when:

a. Pollen mother cells are produced from & porocytes
b. Sporocytes are produced
c. Ovules are formed
d. Four pollen grains are formed from a pollen mother cell
Answer  Explanation 

ANSWER: Pollen mother cells are produced from & porocytes

Explanation:
No explanation is available for this question!


16)   Registered seed is directly produced from:

a. Foundation seed
b. Certified seed
c. Breeder's seed
d. All the above
Answer  Explanation 

ANSWER: Foundation seed

Explanation:
No explanation is available for this question!


17)   Replacement of purine by pyrimidine and vice-versa is known as:

a. Transversion
b. Transduction
c. Translocation
d. All the above
Answer  Explanation 

ANSWER: Transversion

Explanation:
No explanation is available for this question!


18)   Restorer gene is needed:

a. To make a plant correct
b. To bring fertility in male sterile plants
c. To make a plant resistant
d. To enhance the yield
Answer  Explanation 

ANSWER: To bring fertility in male sterile plants

Explanation:
No explanation is available for this question!


19)   Rice varieties IR 20, IR 26 and IR 36 have shown better resistance to:

a. Tungro
b. Bacterial leaf blight
c. Blast
d. Brown plant hopper
Answer  Explanation 

ANSWER: Brown plant hopper

Explanation:
No explanation is available for this question!


20)   Root bear:

a. Unicelluar hairs
b. Multicellular hairs
c. Both (a) & (b)
d. None of the above
Answer  Explanation 

ANSWER: Unicelluar hairs

Explanation:
No explanation is available for this question!


21)   Root has:

a. Root cap
b. Region of cell division
c. Give proper anchorage to plant
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!


22)   Secondary nucleus in the embryosac is:

a. Hoplold
b. Diploid
c. Triploid
d. Hexaploid
Answer  Explanation 

ANSWER: Diploid

Explanation:
No explanation is available for this question!


23)   Seeds of monocotyledons are:

a. Albuminous or non-endospermic
b. Ex-albuminous or non-endospermic
c. Both (a) & (b)
d. Neither (a) nor (b)
Answer  Explanation 

ANSWER: Albuminous or non-endospermic

Explanation:
No explanation is available for this question!


24)   Seeds of pea, gram and beans are:

a. Albuminous or non-endospermic
b. Ex-albuminous
c. Both (a) & (b)
d. None of the above
Answer  Explanation 

ANSWER: Ex-albuminous

Explanation:
No explanation is available for this question!


25)   Selfing of a plant increases:

a. Heterozygosity
b. Homozygosity
c. Homogenecity
d. Heterogenecity
Answer  Explanation 

ANSWER: Homozygosity

Explanation:
No explanation is available for this question!


26)   Sex in Drosophila is governed by the following mechanism:

a. XY methods
b. OX method
c. ZZ method
d. X autosomes ratio
Answer  Explanation 

ANSWER: X autosomes ratio

Explanation:
No explanation is available for this question!


27)   Single gene affecting more than one character is:

a. Polymorphism
b. Pleiotropy
c. Phenocopy
d. Complete penetrance
Answer  Explanation 

ANSWER: Pleiotropy

Explanation:
No explanation is available for this question!


28)   Specific combining ability of the parents should be high in order to develop:

a. Hybrids
b. Composites
c. Varieties
d. Synthetics
Answer  Explanation 

ANSWER: Hybrids

Explanation:
No explanation is available for this question!


29)   Spikelets are characteristic of the family:

a. Umbelliferae
b. Gramineae
c. Malvaceae
d. Leguminoceae
Answer  Explanation 

ANSWER: Gramineae

Explanation:
No explanation is available for this question!


30)   Sporogenesis means:

a. Formation of zygote
b. Formation of embryo
c. Germination of seed
d. Development and formation of spores
Answer  Explanation 

ANSWER: Development and formation of spores

Explanation:
No explanation is available for this question!


31)   Stems often bear:

a. Unicellular hairs
b. Multicellular hairs
c. Both (a) & (b)
d. None of above
Answer  Explanation 

ANSWER: Multicellular hairs

Explanation:
No explanation is available for this question!


32)   Sterility is most pronounced in the F1 generation following:

a. Intervarietal hybridization
b. Intravarietal hybridization
c. Intraspecific hybridization
d. Interspecific hybridization
Answer  Explanation 

ANSWER: Interspecific hybridization

Explanation:
No explanation is available for this question!


33)   Sterility incompatibility of distant crosses can e overcome to produce hybrids by:

a. Pollen culture
b. Anther culture
c. Explants culture
d. Embryo culture
Answer  Explanation 

ANSWER: Embryo culture

Explanation:
No explanation is available for this question!


34)   Stilt roots are produced from:

a. Maint root
b. Secondary roots
c. Stem and branches
d. None of above
Answer  Explanation 

ANSWER: Stem and branches

Explanation:
No explanation is available for this question!


35)   Sudden and sharp change in individual and is directly inherited by the offspring is called:

a. Mutation
b. Adaptation
c. Heredity
d. Continuous variation
Answer  Explanation 

ANSWER: Mutation

Explanation:
No explanation is available for this question!


36)   Sunflower is:

a. Annual herb
b. Biennial herb
c. Perennial herb
d. None of the above
Answer  Explanation 

ANSWER: Annual herb

Explanation:
No explanation is available for this question!


37)   Superiority of heterozygote leads to:

a. Fixation of recessive allele
b. Fixation of dominant allele
c. Maintenance of both the alleles
d. Depression of inbreeding
Answer  Explanation 

ANSWER: Fixation of recessive allele

Explanation:
No explanation is available for this question!


38)   System of classification proposed by Hutchinson is:

a. Natural
b. Artificial
c. Phylogenetic
d. Numerical
Answer  Explanation 

ANSWER: Phylogenetic

Explanation:
No explanation is available for this question!


39)   Tetraploid potato has 48 chromosomes, whereas ordinary piploid species have _______ chromosomes:

a. 34
b. 24
c. 14
d. 10
Answer  Explanation 

ANSWER: 24

Explanation:
No explanation is available for this question!


40)   Which of the following material makes the protein chain?

a. Carbohydrates
b. Sugars
c. Fatty acids
d. Aminoacids
Answer  Explanation 

ANSWER: Aminoacids

Explanation:
No explanation is available for this question!


41)   Which of the following leads to the cross-pollination?

a. Unisexuality
b. Dichogamy
c. Heterostyly
d. All the above
Answer  Explanation 

ANSWER: All the above

Explanation:
No explanation is available for this question!


42)   The application of principles of genetics for the improvement of mankind is:

a. Herdity
b. Linkage
c. Population genetics
d. Eugenics
Answer  Explanation 

ANSWER: Eugenics

Explanation:
No explanation is available for this question!


43)   The attraction between two dissimilar molecules is:

a. Cohesion
b. Adhesion
c. Surface tension
d. None of the above
Answer  Explanation 

ANSWER: Adhesion

Explanation:
No explanation is available for this question!


44)   Which of the following is sub-aerial modification of stem?

a. Corm
b. Stolon
c. Thorn
d. Bulb
Answer  Explanation 

ANSWER: Stolon

Explanation:
No explanation is available for this question!


45)   The basis on which evolution works is:

a. Simplicity
b. Complexity
c. Variations
d. Adaptation
Answer  Explanation 

ANSWER: Variations

Explanation:
No explanation is available for this question!


46)   The best-known artificial system of classification is that promulgated by:

a. Sir Julian Huxley
b. Bentham and Hooker
c. Linnaeus
d. A.P. Candolle
Answer  Explanation 

ANSWER: Linnaeus

Explanation:
No explanation is available for this question!


47)   The best method to break the unfavourable linkage is:

a. Single seed descent method
b. Diallel selective mating
c. Pedigree method
d. Bulk method
Answer  Explanation 

ANSWER: Diallel selective mating

Explanation:
No explanation is available for this question!


48)   The best method to carry forward the maximum number of genotypes/genes to the advanced generations against the force of natural selection is:

a. Pedigree method
b. Bulk method
c. Single seed descent method
d. Back cross method
Answer  Explanation 

ANSWER: Single seed descent method

Explanation:
No explanation is available for this question!


49)   The botanical name of the onion is:

a. Allium sativum
b. Allum cepa
c. Pisum sativium
d. Tagetes erecta
Answer  Explanation 

ANSWER: Allum cepa

Explanation:
No explanation is available for this question!


50)   The branch of genetics concerned with the study of frequencies of mating populations is:

a. Quantitative genetics
b. Behavioural genetics
c. Population genetics
d. Eugenetics
Answer  Explanation 

ANSWER: Population genetics

Explanation:
No explanation is available for this question!