Pebrine is a disease of:

1. Fish

2. Honey bee

3. Silkworm

4. Lac insect

Match the following columns and choose the correct option. 

1. A-5 B-4 C-1 D-2

2. A-5 B-4 C-1 D-3

3. A-4 B-2 C-3 D-1

4. A-1 B-2 C-4 D-5

The world's highly prized wool-yielding 'Pashmina' breed is:

1. Sheep

2. Goat

3. Goat-sheep cross

4. Kashmiri sheep-Afghan sheep cross

In maize, hybrid vigour is exploited by:

1. bombarding the protoplast with DNA

2. crossing of two inbred parental lines

3. harvesting seeds from the most productive plants

4. inducing mutations

Crop plants grown in monoculture are:

1. low in yield

2. free from intraspecific competition

3. characterized by a poor root system

4. highly prone to pests

Which one of the following is being utilized as a source of bio-diesel in the Indian countryside?

1. Euphorbia

2. Beetroot

3. Sugarcane

4. Pongamia

Polyethene glycol method is used for:

1. gene transfer without a vector

2. biodiesel production

3. seedless fruit production

4. energy production from sewage

While planning for an artificial hybridization programme involving dioecious plants, which of the following steps would not be relevant:

1. Bagging of female flower

2. Dusting of pollen on stigma

3. Emasculation

4. Collection of pollen