Hybridization

Q.

Define the term hybridization and photoperiod.

Q.

The method used to obtain variety with high yield and other desirable characters is:

1. Introduction

2. Selection

3. Hybridization

4. Reduction

Q.

Crossing between two different species or varieties of a plant to get plants with improved qualities is called as ____ .

1. Farming

2. Rearing

3. Cultivation

4. Hybridization

Q.

Choose the correct option for the hybrid variety of bitter gourd developed by Kerala Agricultural University.

1. Akshaya

2. Priyanka

3. Neelima

4. Pavithra

Q.

Which of the following are the hybrid varieties of green chilly?

1. Anugraha

2. Ujjwala

3. Jwalamukhi

4. Mukthi

Q.

Name three major activities of crop improvement.

Q.

Seeds obtained by hybridization combine advantages, disadvantages and some other mixed qualities of both the parent plants. How are the seeds with desirable qualities obtained?

1. The whole batch of seed is used.

2. Artificial selection is applied.

3. Natural selection is applied.

4. Seeds are selected randomly.

Q.

Identify the correct pair of parents for the hybrid variety "Chandralaksha".

1. Lakshadweep ordinary

2. West coast tall

3. Gangabondam

4. Chavakkad orange

Q.

Combined qualities of two different plants by means of artificial pollination is achieved by __________

1. Grafting

2. Hybridization

3. Stem cutting

4. Layering

Q.

What do you understand by crop production management?

Q.

refers to crossing between genetically dissimilar plants.

Q. Soil fertility to obtain healthy soil cannot be improved by:

1. Hybridisation
2. Crop rotation
3. Intercropping
4. Natural fertilisers

Q.

Higher yield and disease resistance are the desired characteristics a farmer would want in any crop. Scientists develop such varieties by hybridisation of two different crops. Such a hybridisation could be

1. Inter-varietal

2. Inter-specific

3. Inter-generic

4. Random

Q. Heterosis is

1. Hybrid vigour
2. Hybrid incompatibility
3. Hybrid sterility
4. Structural hybridity

Q. What is hybridization?​

Q. Inter-cropping pattern is another type of ........ 1.. ...... system in which .......... 2 , .......... or ..........3.......... crops are grown .........4.......... on the same field but they are not ..........5.......... with each other. They are grown in a set pattern. For example, a few rows of ..........6.......... alternate with a few rows of, ..........7.......... in the total field area. Such type of ..........8.......... in which two or more ..........9.......... are grown in ..........10.......... rows is called ..........11.......... pattern. The crops selected for such type of pattern should have ..........12.......... types of ..........13.......... This will help the crops to .........14.......... maximum nutrients for the ........15.......... This pattern also prevents ..........16........ and diseases to ..........17........ in all ........18.......... of one crop in the field.

Q.

Brassica nigra is the scientific name of ___.

Q. Crossing between two genetically dissimilar plants to develop a new variety is called.

1. hybridisation
2. pollination
3. fertilisation

Q. One way of incorporating desirable characters into crop varieties is by

1. Fertilization
2. Leaching
3. Hybridization
4. Composting

Q. Name three major activities of crop improvement.

Q. In breeding a new genetic variety of a crop by hybridisation, superior recombinants are self pollinated for several generations till they reach a state of

1. Uniformity
2. Heterozygosity
3. Homozygosity
4. Both (1) and (3)

Q. Define the term hybridization and photoperiod.

Q. Is there a vegetative propogation in human body - yes/no
plz answer

Q. Match the following with respect to hybridisation.

1. Different species
2. Different varieties
3. Different genera

Q. A group of animals related by descent and similar in most characters are said to be__________________

1. Clone
2. Variant
3. Breed
4. Variety

Q. Find out the correct sentence:
(i) Hybridization means crossing between genetically dissimilar plants
(ii) Cross between two varieties is called as interspecific hybridization
(iii) Introducing genes of desired character into a plant gives genetically modified crop
(iv) Cross between plants of two species is called as inter-varietal hybridization

1. (i) and (iii)
2. (ii) and (iv)
3. (ii) and (iii)
4. (iii) and (iv)

Q.

Kiran, Salkeerti, Arka and Anamika are the hybrid varieties of _________

1. Brinjal

2. Peas

3. Lady's finger

4. Tomato

Q. Discuss the role of hybridisation in crop improvement

Q. In the area of plant breeding, it is important not only to preserve the seeds of the variety being cultivated, but also to preserve all its wild relatives. Explain with a suitable example.

Q. Which of the following are the hybrid varieties of green chilly?

1. a. Ujjwala
2. b. Jwalamukhi
3. c. Anugraha
4. d. Mukthi