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12th Biology Weekly Test - 4 ( Botany - Plant Breeding )

St. Britto Hr. Sec. School - Madurai

12th Biology Weekly Test - 4 ( Botany - Plant Breeding )-Aug 2020

Time : 1.00 Hours

Part - A

Multiple Choice Question - Answer All Question

__________ is not a green manure.

Indigofera
Sesbania
Pongamia
Beauveria

____________ species are free-living fungi.

Trichoderma
Indigofera
Tephrosia
crotalaria

Developing new genetic diversity by exposing crop plants to chemical agents or radiation

Mendel's laws
Mutagenesis
Cross breeding
Hybrid breeding

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?

Saccharum robustum and Saccharum officinarum
Saccharum barberi and Saccharum officinarum
Saccharum sinense and Saccharum officinarum
Saccharum barberi and Saccharum robustum

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?

Saccharum robustum and Saccharum officinarum
Saccharum barberi and Saccharum officinarum
Saccharum sinense and Saccharum officinarum
Saccharum barberi and Saccharum robustum

Triple gene dwarf wheat is a product of __________

selection
mutation breeding
hybridization
introduction

Desired improved variety of economically useful crops are raised by

Natural Selection
hybridization
mutation
biofertilisers

Assertion (A) : Genetic variation provides the raw material for selection

Reason (R) : Genetic variations are differences in genotypes of the individuals.

Assertion is right and reason is wrong
Assertion is wrong and reason is righ
Both reason and assertion is right
Both reason and assertion is wrong

Dwarfing gene of wheat is

pal 1
Atomita 1
Norin 10
pelita 2

Match Column I with Column II

Column I Column II

i) William S. Gaud I) Heterosis

ii) Shull II) Mutation breeding

iii) Cotton Mather III) Green revolution

iv) Muller and Stadler IV) Natural hybridization

i-I, ii-II, iii-III, iv-IV
i -III, ii -I, iii -N, iv -II
i -N, ii -II, iii -I, iv -IV
i-II, ii-IV, iii-III, iv-I

Dwarfing gene of wheat is

pal 1
Atomita 1
Norin 10
pelita 2

Crosses between the plants of the same variety are called

interspecific
inter varieta
intra varietal
inter generic

Plants having similar genotypes produced by plant breeding are called

clone
haploid
autopolyploid
genome

The quickest method of plant breeding is

Introduction
Selection
Hybridization
Mutation breeding

A wheat variety, Atlas 66 which has been used as a donor for improving cultivated wheat, which is rich in

iron
carbohydrates
proteins
vitamins

Wheat varieties of Sonora 63, Sonora 64 introduced from

China
Mexico
Phillipines
German

Match column I (crop) with column II(Corresponding disease resistant variety) and select the correct option from the given codes.

Column I Column II

i) Cowpea I) Himgiri

ii) Wheat III) Pusa Sadabahar

iii) Chilli III) Pusa Sadabahar

iv) Brassica IV) Pusa Swarnim

iv iii ii i
ii i iii iv
ii iv i iii
i iii iv ii

Progeny obtained as a result of repeat self pollination a cross pollinated crop to called

pure line
pedigree line
inbreed line
heterosis

Crosses between the plants of the same variety are called

interspecific
inter varietal
intra varietal
inter generic

Cas 9 is a ______

vector
hybrid
protein
rDNA

___________ is not used for seed protection.

Citronella leaf oil
Salt water
lime water
Alginate

Desired improved variety of economically useful crops are raised by

Natural Selection
hybridization
mutation
biofertilisers

Who introduced the concept of gene interaction _________

Hugo De Vries
Carl Correns
W. Bateson
Erich

While studying the history of domestication of various cultivated plants _______ were recognized
earlier

Centres of origin
Centres of domestication
Centres of hybrid
Centres of variation

The quickest method of plant breeding is

Introduction
Selection
Hybridization
Mutation breeding

Plants having similar genotypes produced by plant breeding are called

clone
haploid
autopolyploid
genome

Progeny obtained as a result of repeat self pollination of a cross pollinated crop is called

Pure line
pedigree line
Inbreed line
heterosis

Match list I with list II

i-c, ii-a, iii-b, iv-d,
i-d, ii-c, iii-a, iv-b
i-a, ii-c, iii-b, iv-d
i-b, ii-c, iii-a, iv-b

Which one of the following crop varieties correct matches with its resistance to a disease?

Variety Resistance to disease

Pusa Komal Bacterial blight
Variety Resistance to disease

Pusa Sadabahar White rust
Variety Resistance to disease

Pusa Shubhra Chilli mosaic virus
Variety Resistance to disease

Brassica Pusa swarnim

Most seaweed based fertilisers are prepared from ________

Azolla
izobium
Brown Algae
Arbuscular Mycorrhiza

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