Organic Farming

Q.

Is Mycorrhiza a biofertilizer?

Q.

A highly poisonous animal X which inhabits crop fields is commonly known as the friend of the farmer. It eats up pests like Y and saves the crops from damage. The animal X is killed in large numbers to obtain its Z which sells in the market at a high price. What are X, Y and Z?

Q. Which one of the following is not a bio fertilizer?

1. Rhizobium
2. Nostoc
3. Mycorrhiza
4. Agrobacterium

Q. What is organic farming? Discuss the benefits of organic farming as a viable practise in the context of developing nations like India.

Q. Fish production include shellfish and finned true fish.

1. True
2. False

Q. Question 19
What are organic food?

Q. Which of these cannot act as a biofertiliser?

1. Blue-green algae
2. Rhizobium
3. Glomus
4. Brown and Red Algae

Q.

Which group of microorganism is useful as biocontrol agent?

Q. Microbes in the soil convert nitrogenous wastes from plants and animals into useful forms.

1. True
2. False

Q. The decay of organic waste, which can be utilized to fertilize agricultural land is called as___.

Q.

Choose the appropriate methods used in organic farming.

1. Compost and green manure are used

2. Chemical pesticides are used

3. Chemical or synthetic fertilizers are used

4. Crop rotation is practised

Q.

Which one of the following is not a bio-fertiliser?

1. Rhizobium

2. Nostoc

3. Mycorrhiza

4. Agrobacterium

Q. How did the people of Palampur enhance their production? Explain the methods used for this.

Q. The viruses which have been tested as insecticides against the serious pest of cotton, Heliothis species are

1. Cytoplasmic polyhedrosis virus
2. Entomopox virus
3. Nuclear polyhedrosis virus
4. All of the above

Q. The bacteria generally used for genetic engineering is

1. Agrobacterium
2. Pseudomonas
3. Bacillus
4. Clostridium

Q. Which of the following statement/s hold true in case of Rhizobium?

1. They live in the root nodules of leguminous crops.
2. They help in the process of nitrogen fixation.
3. They can reduce the dependency and expenses on fertilisers.
4. They are oval cells and reproduce by budding.

Q. The crops grown in the winter season (October to March) are known as crops.

1. rabi
2. kharif
3. zaid

Q.

Organic farming does not include:

1. Chemical fertilizers

2. Crop rotation

3. Compost and farmyard manures

4. Green manure

Q. Which among the following is a biofertiliser?

1. Potash
2. Azotobacter
3. Algae
4. Urea

Q. Which of the following statement/s hold true in case of Rhizobium?

1. They live in the root nodules of leguminous crops.
2. They help in the process of nitrogen fixation.
3. They can reduce the dependency and expenses on fertilisers.
4. They are oval cells and reproduce by budding.