Worksheets Class 12 Biology Strategies for Enhancement in Food Production

Students should refer to Worksheets Class 12 Biology Strategies for Enhancement in Food Production Chapter 9 provided below with important questions and answers. These important questions with solutions for Chapter 9 Strategies for Enhancement in Food Production have been prepared by expert teachers for Class 12 Biology based on the expected pattern of questions in the class 12 exams. We have provided Worksheets for Class 12 Biology for all chapters on our website. You should carefully learn all the important examinations questions provided below as they will help you to get better marks in your class tests and exams.

Strategies for Enhancement in Food Production Worksheets Class 12 Biology

Question. Biological principles as applied to animal husbandry and food production. Which of the following technique is not going to play a pivotal role in further enhancing food production
(a) Embryo transfer technique
(b) Tissue culture technique
(c) Mutations
(d) Biomining

Question. Green revolution was dependent to a large extent on plant breeding techniques for development of
(a) High yielding varieties
(b) Disease resistant varieties
(c) Wild varieties
(d) Both 1 and 2

Question. Purposeful manipulation of plant species in order to create desired plant type that are better suited for cultivation, give better yields and disease resistant is
(a) Plant systematics
(b) Plant breeding
(c) Plant monitoring
(d) Biofortification

Question. Which of the following is root of any plant breeding programme
(a) Genetic variability
(b) Evaluation and selection of parents
(c) Cross hybridisation among selectied parents
(d) Selection of superior recombinants

Question. Production of thousands of plants through tissue culture method is called :
(a) Macropropagation
(b) Micropropagation
(c) Somatic embryo
(d) Totipotency

Question. Which variety of Bhindi is resistance to shoot and fruit borer ?
(a) Pusa Gaurav
(b) Pusa sem-2
(c) Pusa komal
(d) Pusa sawani

Question. The entire collection of plants / seeds having all the diverse alleles for all genes in a given crop is known as
(a) Genetic erosion
(b) Germplasm collection
(c) Gene pool
(d) Genetic drift

Question. For how many growing seasons, new selected lines is tested in farmer’s field
(a) Two growing seasons
(b) Three growing seasons
(c) Four growing seasons
(d) Five growing seasons

Question. Which of the following can be used for cultivation of SCP
(a) Waste water from potato processing plants
(b) Straw
(c) Sewage
(d) All above

Question. 250 gm Methylophilus methylotrophus can produce how much amount of proteins in a day :-
(a) 2.5 tonnes
(b) 25 tonnes
(c) 250 tonnes
(d) 25 Kg

Question. Which character of maize leads to resistance to maize stem borers naturally ?
(a) High aspartic acid
(b) Low nitrogen content
(c) Low sugar content
(d) All of the above

Question. “Atlas 66” is high protein contained variety of :
(a) Wheat
(b) Maize
(c) Rice
(d) Bhindi

Question. Which of the following rice variety were developed in India
(a) IR – 8
(b) IR – 36
(c) TN – 1
(d) Jaya

Question. Which of the following sugarcane species were crossed to combine desirable qualities of high yield, thick stem, high sugar content and ability to grow in sugarcane areas of North India
(a) Saccharum officinale x Saccharum barberi
(b) S. officinarum x S. baberi
(c) S. barberi x S.indica
(d) S. officinarum x S. officinale

Question. Match the following

A. Himgiri variety	i. White rust
B. Pusa swarnim	ii. Hill bunt
C. Pusa shubhra	iii. Leaf curl
D. Pusa sadabahar	iv. Black rot

A B C D
(a) ii i iii iv
(b) i ii iv iii
(c) ii i iv iii
(d) i ii iii iv

Question. In maize resistance to maize stem borer is due to
(a) High aspartic acid
(b) Low nitrogen and sugar content
(c) High nitrogen and suger content
(d) Both 1 and 2

Question. Select the incorrect match
(a) Pusa gaurav – Aphids
(b) Pusa sem 2 – Shoot borers
(c) Pusa sem 3 – Jassids & Aphids
(d) Pusa sawani – Fruit borers

Question. Hidden hunger is associated with deficiency of
(a) Proteins
(b) Vitamins
(c) Micronutrients
(d) All the above

Question. Which of the following is not a consiquence of hidden hunger
(a) Increased the risk of disease
(b) Reduced life span
(c) Reduced mental abilities
(d) Reduced skin pigmentation

Question. Breeding crops with higher levels of vitamins andmin erals, higher proteins and healthier fats is known as
(a) Bioremediation
(b) Biomagnification
(c) Biofortification
(d) Biotransformation

Question. Himgiri variety of wheat, which developed by hybridisation and selection is mainly resistance for
(a) Leaf and stripe rust
(b) White rust
(c) Bacterial blight
(d) Chilly mosaic virus

Question. The conventional method of breeding for disease resistance in plants is :
(a) Hybridisation
(b) Selection
(c) Mutation
(d) Both (a) and (b)

Question. Which of the following wheat variety have high protein content
(a) Kalyansona
(b) Sharbati sonaro
(c) Atlas 66
(d) IR – 8

Question. Biofortified rice are enriched in which of the following nutrient
(a) Iron
(b) Amino acids
(c) Fatty acids
(d) Essential amino acids

Question. Which of the following cell property is the basis of plant tissue culture
(a) Homeostasis
(b) Thermoperiodicity
(c) Meristematic
(d) Totipotency

Question. India and China have more than 70% of world livestock population and produce the following percentage of world farm.
(a) 10 %
(b) 25 %
(c) 40 %
(d) 50 %

Question. Inbreeding depression
(a) usually increases fertility only.
(b) usually reduces productivity only.
(c) usually reduces fertility and productivity.
(d) usually increases fertility and productivity.

Question. The ‘mule’ is the result of
(a) inbreeding depression
(b) out-breeding
(c) cross-breeding
(d) inter-specific hybridization

Question. Which of the following stage is transferred to surrogate mothers in livestock breeding experiments?
(a) Unfertilized eggs
(b) Fertilized eggs
(c) 8 to 32 celled embryo
(d) Frozen semen

Question. Which of the following species of honeybee is reared in artificial hives?
(a) Apis indica
(b) Apis florea
(c) Apis rohita
(d) Apis dorsata

Question. Which one of the following is/are marine fish?
(a) Rohu
(b) Hilsa
(c) Mackerel
(d) Both (b) and (c)

Question. The new varieties of plants are produced by
(a) selection and hybridization.
(b) mutation and selection.
(c) introduction and mutation.
(d) selection and introduction.

Question. Pusa Snowball K–1 is a variety of
(a) wheat
(b) chilli
(c) cowpea
(d) cauliflower

Question. Which of the following is generally used for induced mutagenesis in crop plants?
(a) X-rays
(b) UV (260 nm) radiations
(c) Gamma rays (from cobalt 60)
(d) Alpha particles

Question. The entire collection (of plants/ seeds) having all the diverse alleles for all genes in a given crop is called _________. collection.
(a) germplasm
(b) genome
(c) genebank
(d) genotype

Question. Which of the following factor(s) is/are responsible for resistance to maize stem borers?
(a) High aspartic acid
(b) Low nitrogen content
(c) Low sugar content
(d) All of the above

Question. A plant cell has potential to develop into full plant. This property of the plant cell is called ________ .
(a) tissue culture
(b) totipotency
(c) pleuripotency
(d) gene cloning

Question. The technique of obtaining large number of plantlets by tissue culture method is called _______ .
(a) micropropagation
(b) macropropagation
(c) plantlet culture
(d) organ culture

Statement Type Questions

Question. Which of the following statements about breeding is incorrect?
(a) By inbreeding, purelines cannot be evolved.
(b) Continued inbreeding, especially close inbreeding reduces fertility and productivity.
(c) Cross-breeding allows desirable qualities of two different breeds to be combined.
(d) Inbreeding exposes harmful recessive genes that are eliminated by selection.

Question. Which of the following statements is correct
(a) A gene bank should not be regarded as a plant museum.
(b) The germplasm, stored in the gene bank are actively utilized by breeders to develop novel varieties.
(c) The phase between 1960 – 1970 is often called the Green Revolution.
(d) All of the above

Question. Consider the following four statements (i – iv) and select the option which includes all the correct ones only.
(i) Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins, etc.
(ii) Body weight-wise, the micro-organism Methylophilus methylotrophus may be able to produce several times more proteins than the cows per day.
(iii) Common button mushrooms are a very rich source of vitamin C.
(iv) A rice variety has been developed which is very rich in calcium.
(a) (iii) and (iv) only
(b) (i), (iii) and (iv) only
(c) (ii), (iii) and (iv) only
(d) (i) and (ii) only

Question. Read the following statement(s) and answer the question.
(i) Animal husbandry is the industrial practice of breeding and raising livestock.
(ii) Dairy farm management deals with processes which improve the quality and quantity of milk production.
(iii) Poultry is the class of domesticated birds used for food or eggs.
Which of the following statement (s) is/are correct?
(a) Only (i)
(b) Only (iii)
(c) Both (ii) and (iii)
(d) All of these

Question. Which of the following includes all the characteristics described given below ?
(i) In this method of breeding, the mating of animals occurs with same breed.
(ii) They have no common ancestors on either side of their pedigree upto 4 – 6 generations.
(iii) It is best for those animals that are below average in productivity in milk production, growth rate in beef cattle.
(iv) It helps to overcome inbreeding depression.
(a) Inbreeding
(b) Out-breeding
(c) Out-crossing
(d) Cross-breeding

Question. Which of the following statement(s) is/are correct?
(i) Out-breeding is the breeding of the unrelated animals which may be between individuals of the same breed but having no common ancestors for 4 – 6 generations or between different breeds or different species.
(ii) Cross-breeding allows the desirable qualities of two different breeds to be combined.
(iii) In interspecific hybridization, male and female animals of two different related species are mated.
(a) Only (i)
(b) Only (iii)
(c) Both (ii) and (iii)
(d) All of these

Matching Type Questions

Question. Match column-I with column-II and choose the correct option.

Column -I	Column -II
A. Pisciculture	I. Micropropagation
B. Apiculture	II. Crop production
C. Tissue culture	III. Rearing of fishes
D. Green revolution	IV. Fish-production
E. Blue revolution	V. Bee-keeping

(a) A – III; B – V; C – IV; D – I; E – II
(b) A – III; B – V; C – I; D – II; E – IV
(c) A – V; B – III; C – I; D – II; E – IV
(d) A – III; B – V; C – II; D – I; E – IV

Question. Choose the option showing the crop plants with its correct

A. Semi Dwarf Wheat	I. Sonalika
B. Semi Dwarf Rice	II. Kalyan sona
	III. IR-8
	IV. Jaya
	V. Taichung Native-1
	VI. Ratna

(a) A – I, III, V; B – II, IV, VI
(b) A – III, IV, V, VI; B – I, II
(c) A – I, II, IV; B – III, V, VI
(d) A – I, II; B – III, IV, V, VI

Question. Which of the following crop plant is not matching as correct pair with its variety ?
(i) Wheat – Himgiri
(ii) Brassica – Pusa Gaurav
(iii) Cauliflower – Pusa Komal
(iv) Chilli – Pusa Sadabahar
(v) Okra – Pusa Sawani
(a) Only (i) (b) (ii) and (iii)
(c) Only (iii) (d) (ii) and (iv)

Question. Which of the following is incorrectly matched ?
(a) Explant – Excised plant part used for callus formation
(b) Cytokinins – Root initiation in callus
(c) Somatic embryo – Embryo produced from a vegetative cells
(d) Anther culture – Haploid plants

Assertion/Reason Type Question

In the following questions, a statement of Assertion is followed by a statement of Reason.
(a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
(b) If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
(c) If Assertion is true but Reason is false.
(d) If both Assertion and Reason are false.

Question. Assertion : Fish meal is a rich protein source for poultry and cattle.
Reason : It is produced from the fins and tail (the nonedible parts)

Question. Assertion : Meristem tissue culture can produced virus free plants from virus infected plants.
Reason : In this technique the growth of the virus is inhibited during the growth of the host tissue.

Diagram Type Question

Question. Refer the given figures and answer the questions.

Which of the following statements is correct regarding the above figures?
(i) These are all Indian hybrid crops of low yielding varieties.
(ii) These are all Indian hybrid crops of high yielding varieties.
(iii) The production of the above crops led to dramatic increase in food production. 
(iv) These crops are produced as a result of various plants breeding technique.
(a) (i), (ii), and (iii)
(b) (ii), (iii) and (iv)
(c) (iii) and (iv) only
(d) (i) and (iii) only

Critical Thinking Type Questions

Question. Which one of the following combination would a sugarcane farmer look for in the sugarcane crop ?
(a) Thick stem, long internodes, high sugar content and disease resistant.
(b) Thick stem, high sugar content and profuse flowering.
(c) Thick stem, short internodes, high sugar content, disease resistant.
(d) Thick stem, low sugar content, disease resistant.

Question. High milk yielding varieties of cows are obtained by
(a) super ovulation
(b) artificial insemination
(c) use of surrogate mothers
(d) all of the above

Question. In order to obtain virus-free plants through tissue culture the best method is
(a) meristem culture
(b) protoplast culture
(c) embryo rescue
(d) anther culture

Question. Which of the following is the consequence of plant diseases?
(a) Reduced yield and lower quality of produce.
(b) Reduced yield, lower quality of produce and increased cost of production.
(c) Reduced yield, lower quality of produce and poisonous produce.
(d) Reduced yield, lower quality of produce, increased cost of production and poisonous produce.

Question. Plants derived sexually from the same plant are _______while those derived from somatic tissue from the same plant are ______________.
(a) identical, different
(b) different, also different
(c) different, identical
(d) identical, also identical

Question. In crop improvement programme, haploids are important because they
(a) require one half of nutrients.
(b) are helpful in study of meiosis.
(c) grow better under adverse conditions.
(d) form perfect homozygous.

Question. The way in which biotechnology is contributed to sustainable agriculture is
(a) biofertilizer
(b) single cell protein (SCP)
(c) disease and insect resistant varieties
(d) all of the above

Question. In tissue culture medium, the embryoids formed from pollen grains is due to
(a) cellular totipotency
(b) organogenesis
(c) double fertilization
(d) test-tube culture

Question. The greatest threat to genetic diversity in agricultural crops is
(a) extensive use of insecticides and pesticides.
(b) extensive mixed cropping.
(c) introduction of high yielding varieties.
(d) extensive use of fertilizers.

Question. Somaclonal variation appears in
(a) organisms produced through somatic hybridization.
(b) plants growing in highly polluted conditions.
(c) apomictic plants.
(d) tissue culture raised plants.

Question. Hisardale is a new breed of sheep developed in Punjab by one of the breeding technique in which superior male of one breed is mated with superior females of another breed.
Identify the breeding technique from the option given below.
(a) Inbreeding
(b) Out crossing
(c) Out breeding
(d) Cross breeding