CHAPTER 9 PLANT BREEDING - CLASS 12 BIOLOGY BOTANY - 1 MARK QUESTIONS - ONLINE TEST ~ Kalvisolai

ப்ளஸ் டூ படிக்கும் மாணவர்களுக்கு இந்தத் தேர்வு பயனுள்ளதாக இருக்கும். இந்த யூ ட்யூப் தளத்தில் வரும் ஆடியோவை ப்ளே செய்து மீண்டும் மீண்டும் கேளுங்கள். ஆடியோவை கேட்கும் பொழுதே கீழே உள்ள கேள்வி பதில்களை SCROLL செய்து உற்று நோக்குங்கள். பிறகு கேள்விகளில் உள்ள சரியான விடையை தேர்ந்தெடுத்து கடைசியாக SUBMIT செய்யுங்கள். நீங்கள் எடுத்த மதிப்பெண் வரும் அந்த மதிப்பெண்ணை கீழே உள்ள கமெண்ட் பாக்ஸ் இல் பதிவு செய்யுங்கள். மதிப்பெண் குறைந்தால் மீண்டும் ஒருமுறை முயற்சி செய்யுங்கள்... வாழ்த்துக்கள் மாணவர்களே...அன்புடன் - K.K.D.

1.
📌Assertion: Genetic variation provides the raw material for selection
📌Reason: Genetic variations are differences in genotypes of the individuals.
a) Assertion is right and reason is wrong.
c) Both reason and assertion is right.
b) Assertion is wrong and reason is right.
d) Both reason and assertion is wrong.
2.
While studying the history of domestication of various cultivated plants _______ were recognized earlier
a) Centres of origin
b) Centres of domestication
c) Centres of hybrid
d) Centres of variation
3.
Pick out the odd pair.
a) Mass selection - Morphological characters
b) Purline selection - Repeated self pollination
c) Clonal selection - Sexually propagated
d) Natural selection - Involves nature
4.
Match Column I with Column II
Column I :
📌i) William S. Gaud , 📌ii) Shull , 📌iii) Cotton Mather , 📌iv) Muller and Stadler
Column II :
📌I) Heterosis, 📌II) Mutation breeding, 📌III) Green revolution, 📌IV) Natural hybridization
a) i (I), ii (II), iii (III), iv (IV)
b) i (III), ii (I), iii (IV), iv (II)
c) i (IV), ii (II), iii (I), iv (III)
d) i (II), ii (IV), iii (III), iv (IV)
5.
The quickest method of plant breeding is
a) Introduction
b) Selection
c) Hybridization
d) Mutation breeding
6.
Desired improved variety of economically useful crops are raised by
a) Natural Selection
b) hybridization
c) mutation
d) biofertilisers
7.
Plants having similar genotypes produced by plant breeding are called
a) clone
b) haploid
c) autopolyploid
d) genome
8.
Importing better varieties and plants from outside and acclimatising them to local environment is called
a) cloning
b) heterosis
c) selection
d) introduction
9.
Dwarfing gene of wheat is
a) pal 1
b) Atomita 1
c) Norin 10
d) pelita 2
10.
Crosses between the plants of the same variety are called
a) interspecific
b) inter varietal
c) intra varietal
d) inter generic
11.
Progeny obtained as a result of repeat self pollination a cross pollinated crop to called
a) pure line
b) pedigree line
c) inbreed line
d) heterosis
12.
Jaya and Ratna are the semi dwarf varieties of
a) wheat
b) rice
c) cowpea
d) mustard
13.
Which one of the following are the species that are crossed to give sugarcane varieties with high sugar, high yield, thick stems and ability to grow in the sugarcane belt of North India?
a) Saccharum robustum and Saccharum officinarum
b) Saccharum barberi and Saccharum officinarum
c) Saccharum sinense and Saccharum officinarum
d) Saccharum barberi and Saccharum robustum
14.
Match column I (crop) with column II (Corresponding disease resistant variety) and select the correct option from the given codes.
🔽Column I :
I) Cowpea, II) Wheat , IIII) Chilli, IV) Brassica.
🔽Column II :
i) Himgiri , ii) Pusa komal, iii) Pusa Sadabahar, iv) Pusa Swarnim.
a) I (iv), II (iii), III (ii), IV (i)
b) I (ii), II (i), III (iii), IV (iv)
c) I (ii), II (iv), III (i), IV (iii)
d) I (i), II (iii), III (iv), IV (ii)
15.
A wheat variety, Atlas 66 which has been used as a donor for improving cultivated wheat, which is rich in
a) iron
b) carbohydrates
c) proteins
d) vitamins
16.
Which one of the following crop varieties correct matches with its resistance to a disease?
a) Pusa Komal : Bacterial blight
b) Pusa Sadabahar : White rust
c) Pusa Shubhra : Chilli mosaic virus
d) Brassica : Pusa swarnim
17.
Which of the following is incorrectly paired?
a) Wheat - Himgiri
b) Milch breed - Sahiwal
c) Rice - Ratna
d) Pusa Komal - Brassica
18.
Match list I with list II |
🔽List I (Biofertilizer):
(i) Free living N2 , (ii) Symbiotic N2, (ii) P Solubilizing, (iv) P Mobilizing.
🔽List II (Organisms) :
a) Aspergillus, b) Amanita , c) Anabaena azollae, d) Azotobactor .
a. i-c, ii-a, iii-b, iv-d
b. i-d, ii-c, iii-a, iv-b.
c. i-a, ii-c, iii-b, iv-d
c. i-b, ii-a, iii-d, iv-c.
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