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12th Biology Monthly Test - 2 ( Botany - Plant Breeding)

St. Britto Hr. Sec. School - Madurai

12th Biology Monthly Test - 2 ( Botany - Plant Breeding)-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

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

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

Triple gene dwarf wheat is a product of __________

selection
mutation breeding
hybridization
introduction

mporting better varieties and plants from outside and acclimatising them to local environment is called

cloning
heterosis
selection
introduction

Explanation ofNBPGR is.

National Bureau of Plant Genetic Resources
National Bureau Plan of Genetic of Resources
National Bureau of Plant genetic Resistance
National Bureau of Plant Genetic Rights

Importing better varieties and plants from outside and acclimatising them to local environment is called

cloning
heterosis
selection
introduction

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

pure line
pedigree line
inbreed line
heterosis

Which one of the following is a plant growth promoting Rhizobacteria?

Bacillus
Amanita
Penicillium
Pseudomonas

Beauveria helps plants by

adding nutrients to soil
fixing nitrogen
killing insects
mobilizing phosphorous

Assertion: Genetic variation provides the raw material for selection
Reason: Genetic variations are differences in genotypes of the individuals.

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

Pick out the odd pair.

Mass selection - Morphological characters
Pureline selection - Repeated self pollination
Clonal selection - Sexually propagated
Natural selection - Involves nature

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

Variety Resistance to disease

Pusa Kamal 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

Plants having similar genotypes produced by plant breeding are called

clone
haploid
autopolyploid
genome

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

Use of Nano technology in crop production is _____________

Environmentally safe
Ecologically sustainable
Economically stable
All the above

Part - B

Generic 2 - Answer All Question

Comment on gamma Garden or atomic Garden.

Differentiate Intervarietal hybridization and Intravarietal hybridization.

Define Biofortification.
What are the steps involved in Hybridisation?

Differentiate primary introduction from secondary introduction.

Differentiate primary introduction from secondary introduction.

Name few plant species used in green manuring.

Write a note on NBPGR.

Part - C

Generic 3 - Answer All Question

Tabulate the examples for disease resistant varieties of crops.

What are Bio-pesticides?

List out the possible changes occur in the plant species due to domestication.

Mention three advantages of using biofertilizers.

Explain the Biofortification in Sugar cane.

Classify the seeds based on physiological behaviour.
(i) Define seed hardening.
(ii) Add notes on its benefits.

List out the pest resistant varieties of crops.

Part - D

Generic 5 - Answer All Question

Define selection. Explain its types.

Write a note on heterosis.
Write a note of heterosis.

List out the new breeding techniques involved in developing new traits in plant breeding.

How are microbial innoculants used to increase the soil fertility?

Explain the best suited type followed by plant breeders at present.

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