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12th Biology Weekly Test - 1 ( Botany - Plant Breeding )

St. Britto Hr. Sec. School - Madurai

12th Biology Weekly Test - 1 ( Botany - Plant Breeding )-Aug 2020

Time : 1.30 Hours

Part - A

Multiple Choice Question - Answer All Question

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

___________ is not used for seed protection.

Citronella leaf oil
Salt water
lime water
Alginate

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

Bacillus
Amanita
Penicillium
Pseudomonas

____________ species are free-living fungi.

Trichoderma
Indigofera
Tephrosia
crotalaria

Development of improved varieties by combining good characteristics from two parents.

Cross breeding
Clonal selection
Targeted Breeding
None of these above

Match list I with list II

List I List II

Biofertilizer Organisms

i) Free living N2 a) Aspergillus

ii) Symbiotic N2 b) Amanita

iii) P Solubilizing c) Anabaena azollae

iv) P Mobilizing d) Azotobactor

ic, iia, iiib, ivd
id, iic, iiia, ivb.
ia, iic, iiib, ivd
ib, iia, iiid, ivc

Most seaweed based fertilisers are prepared from ________

Azolla
izobium
Brown Algae
Arbuscular Mycorrhiza

Who introduced the concept of gene interaction _________

Hugo De Vries
Carl Correns
W. Bateson
Erich

The quickest method of plant breeding is

Introduction
Selection
Hybridization
Mutation breeding

Part - B

Generic 2 - Answer All Question

How are microbial innoculants used to increase the soil fertility?

Differentiate primary introduction from secondary introduction.

Differentiate Intervarietal hybridization and Intravarietal hybridization.

What are the benefits of seed treatment?
Define euheterosis.

Differentiate Natural selection and Artificial selection.

Part - C

Generic 3 - Answer All Question

What is the disadvantages of pureline selection?
What is the note of Beauveria?

List out the pest resistant varieties of crops.

Differentiate the Primary introduction and Secondary introduction.

Tabulate the examples for disease resistant varieties of crops.

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

Part - D

Generic 5 - Answer All Question

Comment on Bio-pesticides.

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

List out the new breeding techniques involved in developing new traits in plant breeding.
What are the different types of hybridization?

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