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

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

(a)

i	ii	iii	iv
I	II	III	IV

(b)

i	ii	iii	iv
III	I	IV	II

(c)

i	ii	iii	iv
IV	II	I	IV

(d)

i	ii	iii	iv
II	IV	III	I

The quickest method of plant breeding is _______.

(a)

Introduction

(b)

Selection

(c)

Hybridization

(d)

Mutation breeding

Desired improved variety of economically useful crops are raised by _______.

(a)

Natural Selection

(b)

hybridization

(c)

mutation

(d)

biofertilisers

Plants having similar genotypes produced by plant breeding are called _____.

(a)

clone

(b)

haploid

(c)

autopolyploid

(d)

genome

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

(a)

cloning

(b)

heterosis

(c)

selection

(d)

introduction

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

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

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

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

(a)

Variety	Resistance to disease
Pusa Komal	Bacterial blight

(b)

Variety	Resistance to disease
Pusa Sadabahar	White rust

(c)

Variety	Resistance to disease
Pusa Shubhra	Chilli mosaic virus

(d)

Variety	Resistance to disease
Brassica	Pusa swarnim

Differentiate between primary introduction from secondary introduction.

How are microbial innoculants used to increase the soil fertility?

What are the different types of hybridization?

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

Write a note on heterosis.

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