#9 Biology Class XII- Strategies for Enhancement in Food Production (NEET, MHTCET) MCQ
Strategies for Enhancement in Food Production (NEET, MHTCET) MCQ
1) Somaclones are obtained by
(a) plant breeding
(b) irradiation
(c) genetic engineering
(d) tissue culture
Answer
(d) tissue culture
2) Breeding of crops with high levels of minerals, vitamins and proteins is called
(a) somatic hybridization
(b) biofortification
(c) biomagnification
(d) micropropagation
Answer
(b) biofortification
3) “Jaya” and “Ratna” developed for Green revolution in India are the varieties of
(a) maize
(b) rice
(c) wheat
(d) bajra
Answer
(b) rice
4) ‘Himgiri’ developed by hybridization and selection for disease resistance against rust pathogens in a variety of
(a) chilli
(b) maize
(c) sugarcane
(d) wheat
Answer
(d) wheat
5) In plant breeding programmes, the entire collection (of plants seeds) having all the diverse alleles for all genes in a given crop is called
(a) evaluation and selection of parents
(b) germplasm collection
(c) selection of superior recombinants
(d) cross-hybridisation among the selected parents.
Answer
(b) germplasm collection
6) A protoplast is a cell
(a) undergoing division
(b) without cell wall
(c) without plasma membrane
(d) without nucleus.
Answer
(b) without cell wall
7) A group of animals which are related by descent and share many similarities are referred to as [NCERT Exemplar]
(a) breed
(b) race
(c) variety
(d) species
Answer
(a) breed
8) Inbreeding is carried out in animal husbandry because it [NCERT Exemplar]
(a) increases vigour
(b) improves the breed
(c) increases heterozygosity
(d) increases homozygosity
Answer
(d) increases homozygosity
9) Bull semen for the purpose of artificial insemination is stored in
(a) ice
(b) liquid oxygen
(c) liquid nitrogen
(d) liquid CO2
Answer
(c) liquid nitrogen
10) Which one of the following is not a fungal disease? [NCERT Exemplar]
(a) Rust of wheat
(b) Smut of Bajra
(c) Black rot of crucifers
(d) Red rot of sugarcane
Answer
(c) Black rot of crucifers
11) In virus-infected plants the meristematic tissues in both apical and axillary buds are free of virus because [NCERT Exemplar]
(a) the dividing cells are virus resistant
(b) meristems have anti viral compounds
(c) the cell division of meristems are faster than the rate of viral multiplication
(d) Viruses cannot multiply within meristem cell(s).
Answer
(c) the cell division of meristems are faster than the rate of viral multiplication
12) Several South Indian states raise 2-3 crops of rice annually. The agronomic feature that makes this possible is because of [NCERT Exemplar]
(a) shorter rice plant
(b) better irrigation facilities
(c) early yielding rice variety
(d) disease resistant rice variety.
Answer
(c) early yielding rice variety
13) Which one of the following combination would a sugarcane farmer look for in the sugarcane crop? [NCERT Exemplar]
(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
Answer
(a) Thick stem, long internodes, high sugar content and disease resistant
14) Fungicides and antibiotics are chemicals that [NCERT Exemplar]
(a) enhance yield and disease resistance
(b) kill pathogenic fungi and bacteria, respectively
(c) kill all pathogenic microbes
(d) kill pathogenic bacteria and fungi respectively.
Answer
(b) kill pathogenic fungi and bacteria, respectively
15) Superovulation is induced by
(a) artificial insemination
(b) more mating
(c) hormonal injection
(d) Any of these
Answer
(c) hormonal injection
16) The scientific process by which crop plants are enriched with certain desirable nutrients is called [NCERT Exemplar]
(a) crop protection
(b) breeding
(c) biofortification
(d) bioremediation.
Answer
(c) biofortification
17) Given below are a few statements regarding somatic hybridisation. [NCERT Exemplar]
Choose the correct statements.
(i) Protoplasts of different cells of the same plant are fused
(ii) Protoplasts from cells of different species can be fused
(iii) Treatment of cells with cellulase and pectinase is mandatory
(iv) The hybrid protoplast contains characters of only one parental protoplast.
(a) (i) and (iii)
(b) (i) and (ii)
(c) (i) and (iv)
(d) (ii) and (iii)
Answer
(d) (ii) and (iii)
18) An explant is [NCERT Exemplar]
(a) dead plant
(b) part of the plant
(c) part of the plant used in tissue culture
(d) part of the plant that expresses a specific gene.
Answer
(c) part of the plant used in tissue culture
19) The biggest constraint of plant breeding is [NCERT Exemplar]
(a) availability of desirable gene in the crop and its wild relatives
(b) infrastructure
(c) trained manpower
(d) transfer of genes from unrelated sources.
Answer
(a) availability of desirable gene in the crop and its wild relatives
20) Micro-propagation is [NCERT Exemplar]
(a) propagation of microbes in vitro
(b) propagation of plants in vitro
(c) propagation of cells in vitro
(d) growing plants on smaller scale.
Answer
(b) propagation of plants in vitro
21) Protoplast is [NCERT Exemplar]
(a) another name for protoplasm
(b) an animal cell
(c) a plant cell without a cell wall
(d) a plant cell.
Answer
(c) a plant cell without a cell wall
22) To isolate protoplast, one needs [NCERT Exemplar]
(a) pectinase
(b) cellulase
(c) both pectinase and cellulase
(d) chitinase.
Answer
(c) both pectinase and cellulase
23) Which one of the following is a marine fish? [NCERT Exemplar]
(a) Rohu
(b) Hilsa
(c) Catla
(d) Common Carp
Answer
(b) Hilsa
24) Which one of the following products of apiculture is used in cosmetics and polishes: [NCERT Exemplar]
(a) Honey
(b) Propolis
(c) Wax
(d) Royal jelly
Answer
(c) Wax
25) 33 percent of India’s Gross Domestic Product comes from [NCERT Exemplar]
(a) industry
(b) agriculture
(c) export
(d) small-scale cottage industries.
Answer
(b) agriculture
26) A collection of all the alleles of all the genes of a crop plant is called [NCERT Exemplar]
(a) germplasm collection
(b) protoplasm collection
(c) herbarium
(d) somaclonal collection.
Answer
(a) germplasm collection
 MCQ){kind=link}