Artificial Selection

Q.

Name the edible parts of a mustard plant.

Q. What is Artificial Selection? Give examples.

Q.

What is the edible parts of the lotus plant?

Q. Methods of breeding for disease resistance include

1. Conventional breeding methods like hybridisation and selection
2. Inducing mutations and then screening for resistance
3. Selection among somaclonal variants and genetic engineering
4. All of these

Q.

Broccoli, red cabbage, cauliflower etc are derived from wild cabbage. This is an example for _____.

1. natural selection
2. genetic drift
3. artificial selection
4. gene flow

Q.

Name five varieties of vegetables which have been produced from 'wild cabbage' by the process of artificial selection.

Q.

Mention a plant whose seeds and leaves are useful for us.

Q.

Which of the following organisms can be used for artificial selection ?

1. Dogs

2. Pigeons

3. Plants

4. All of the above

Q. Artificial selection of wild cabbage for swollen parts led to the development of____________.

1. Broccoli
2. Kohlrabi
3. Kale
4. Cabbage

Q.

Broccoli has been developed from cabbage through artificial selection.

Q. The evolution of vegetable broccoli belonging to the cabbage family is an example of ______ .

1. natural selection
2. artificial selection
3. elimination
4. speciation

Q.

One of the following has not been produced from wild cabbage by the process of artificial selection. This one is :
(a) kohlrabi
(b) cabbage
(c) spinach
(d) kale

Q.

Diversification in plant life appeared initially

1. Due to long periods of evolutionary changes

2. Due to abrupt mutations

3. Suddenly on earth

4. By seed dispersal

Q.

Choose the one term from the following which includes the other three: broccoli, wild cabbage, cauliflower, cabbage

Q. How has artificial selection by humans helped in the evolution of different vegetables? Explain in brief with example

Q.

Give one advantage of artificial selection.

Q.

Different kinds of plants like broccoli, cauliflower and kale have been bred from wild cabbage as a result of

1. Natural selection

2. Artificial selection

3. Decomposition

4. Regeneration

Q. Which of the following traits were selected by farmers to breed Kohlrabi from wild cabbage?

1. Swollen parts
2. Sterile flowers
3. Arrested flower development
4. Slightly larger leaves

Q.

Different kinds of wild cabbage are evolved as a result of:

1. Decomposition

2. Artificial selection

3. Reproduction

4. Natural selection

Q. Name any five vegetables generated from a common ancestors through artificial selection rather than natural selection. Also mention the features for which each vegetable is selected

Q.

The farmers have been cultivating a food plant X for over two thousand years and have produced as many as five entirely different looking vegetables A, B, C, D and E from it.
(a) What could the plant X be?
(b) What are A, B, C, D and E?
(c) What is the process of evolution involved in this example known as?

Q. Somatic hybridisation is most useful in case of

1. Transfer of disease resistance genes from one species to another
2. Transfer of stress resistance genes from one species to another
3. Creating cytoplasmic male sterility
4. Only A and C

Q. Cabbage, broccoli, cauliflower are obtained from wild cabbage by

1. Evolution
2. Speciation
3. Artificial selection
4. Classification

Q. Which among the following feature of wild cabbage was selected for making cauliflower?

1. Sightly larger leaves
2. Swollen parts
3. Sterile flowers
4. Very short distance between leaves

Q.

Which of the following organisms can be used for artificial selection ?

1. Dogs

2. Pigeons

3. Plants

4. All of the above

Q.

Man has developed the following pair of common vegetables, which of the following pairs has been developed from wild cabbage?

1. Red and green cabbage

2. Broccoli and cauliflower

3. Kale and kohlrabi

4. All of the above

Q. What are the benefits of Artificial Selection to farmers?

1. Increase the fertility of soil.
2. Minimised genetic diseases in plants and animals.
3. It allows them to become less dependent on agricultural equipments
4. It allows them to grow crops with desirable characteristics

Q. Methods of breeding for disease resistance include

1. Conventional breeding methods like hybridisation and selection
2. Inducing mutations and then screening for resistance
3. Selection among somaclonal variants and genetic engineering
4. All of these

Q.

What is artificial selection?

1. The process of abrupt decrease in a species population by artificial means.

2. The process where humans choose male and female based on their characteristics

3. The process of creating variation in the offspring by humans

4. Both B and C

Q. Pure line selection results in retention of desired characters__________

1. For one generation
2. For two generations
3. For several generations
4. None of these