JOIN ADRE 2.0 Telegram Group

NCERT - Strategies for Environment and Food Production Questions of Class 12 Biology | GkSeries

Questions
16 Crosses between two plants by the same variety are called
1 Intravarietal
2 Intervarietal
3 Interspecific
4 Intergeneric

Answer: Intravarietal
17 In tissue culture medium, the embryoids formed from pollen grains is due to
1 Double fertilization
2 Organogenesis
3 Cellular totipotency
4 Test tube cultur

Answer: Cellular totipotency
Advertisement
Article and Schedule Quiz Start Test!

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

18 A transgenic food crap which may help in solving the problem of night blindness in developing countries is
1 Flavr Savr tomatoes
2 Golden rice
3 Starlink maize
4 Bt Soybean

Answer: Golden rice
19 Which one of the following pair is incorrectly matched in respect to the "crop varieties for disease resistance"?
1 Cowpea - Bacterial blight
2 Brassica - White rust
3 Wheat - Leaf and stripe rust
4 Cauliflower - Tobacco mosaic virus and leaf curl

Answer: Cauliflower - Tobacco mosaic virus and leaf curl
20 Which one of the following is not a biofertilizer?
1 Mycorrhiza
2 Agrobacterium
3 Rhizobium
4 Nostoc

Answer: Agrobacterium
21 Hybrid vigour is mostly due to
1 Homozygosity of pure characters
2 Superiority of all the genes
3 Heterozygosity
4 Mixing up of cytoplasm of the male with that of female

Answer: Heterozygosity
22 Norman Borlaug the ‘Father of Green Revolution’ has developed a highly recognized and appreciated cultivating variety of ______.
1 Wheat
2 Rice
3 Onion
4 Sugarcane

Answer: Wheat
23 Cloning is meant for
1 Production of HGH gene in E. coli.S
2 To preserve the genotype of organism
3 To replace the original one
4 all of these

Answer: all of these
24 Which one of the following scientist’s names is correctly matched with the theory put forth by him?
1 Pasteur – Inheritance of acquired characters
2 Mendel – Theory of Pangenesis
3 Weismann – Theory of continuity of Germplasm
4 de Vries – Natural selection

Answer: Weismann – Theory of continuity of Germplasm
25 Which one of the following is commonly used in transfer of foreign DNA into crop plants?
1 Penicillium expansum
2 Trichoderma harzianum
3 Meloidogyne incognita
4 Agrobacterium tumefaciens

Answer: Agrobacterium tumefaciens
26 The superiority of the hybrid over either parent in one or more traits is
1 Transformation
2 Metamorphosis
3 Heterosis
4 None of these

Answer: Heterosis
27 Heterosis means
1 Pollen sterility
2 Pollen-pistil incompatibility
3 Hybrid vigour
4 Hybrid compatibility

Answer: Hybrid vigour
28 An organism used as biofertilizer for raising soybean crop is
1 Nostoc
2 Azotobacter
3 Azospirillum
4 Rhizobium

Answer: Rhizobium
29 Which of the followings is correctly matched?
1 Apiculture - Honey bee
2 Pisciculture - Silk moth
3 Sericulture - Fish
4 Aquaculture – mosquitoes

Answer: Apiculture - Honey bee
30 The emasculation of flower buds is achieved by removing
1 Sepals
2 Anthers
3 Stigma
4 Corolla

Answer: Anthers

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!

Chapters

Advertisement