Tag: various agricultural practices

Questions Related to various agricultural practices

Which of the following technique is used for rooftop gardening?

evs modern agriculture agricultural practices in india different types of farming and agriculture various agricultural practices

  1. Hydroponics

  2. Aeroponics

  3. Green roof

  4. All of the above

Show answer
Correct Option: D
Explanation:

(A)Hydroponics is also called as a floating-raft system in which farming is done without using soil on a nutrient-rich solution. For Example, Mint, Tomato, Potato, Lettuce, Basil etc.

(B)Aeroponics is an indoor gardening method in which plants are grown in a mist environment. Tomato, Pepper, Cucumber, e.t.c are some of the examples
of Aeroponics.
(C)Green Roof Is a system of planting trees covered with vegetation and growing medium. Small grasses, Herbs, Flowering Plants, e.t.c are some of the examples of the Green roof.
So, the correct option is 'All of the above'.

Net house farming provides protection against

evs modern agriculture agricultural practices in india different types of farming and agriculture various agricultural practices

  1. Insects

  2. Heat

  3. Strong wind

  4. Both A and C

Show answer
Correct Option: D
Explanation:
A Net house is a structure enclosed by agro nets or any other woven material to allow required sunlight, moisture and air to pass through the gaps. It creates an appropriate micro climate conducive to the plant growth. It is also referred as shade net house or net house.Uses of net house are as follows-
  • Helps in cultivation of flower plants, foliage plants, medicinal plants, vegetables and spices.
  • Used for fruit and vegetable nurseries as well as for raising of forest species etc.
  • Helps in quality drying of various agro products.
  • Used to protect against pest attack.
  • Protects from natural weather disturbances such as wind, rain, hail and frost.
  • Used in production of graft saplings and reducing its mortality during hot summer days.
So, the correct answers are both ' Insects & Strong wind'

Green house crops such as tomatoes and bell pepper produce higher yields. This is due to.

evs modern agriculture agricultural practices in india different types of farming and agriculture various agricultural practices

  1. Tomatoes and bell pepper are not $C _3$ plants

  2. Due to diffused light in green house

  3. $CO _2$ is limiting factor to photosynthesis

  4. $CO _2$ enriched atmosphere leads to higher yield

Show answer
Correct Option: D
Explanation:
  • Growing crops in greenhouse produce higher yields due to a lot of reasons like - temperature control, carbon dioxide factor, reduced pest and disease exposure and humidity. 
  • The concentrated carbon dioxide results in larger leaves, stronger plant stems and possible early flowering and fruiting.
  • So the correct option is 'CO2 enriched atmosphere leads to higher yield'.

Rooftop gardening are mainly found in urban areas because

evs modern agriculture agricultural practices in india different types of farming and agriculture various agricultural practices

  1. It absorbs heat radiated in the atmosphere.

  2. In urban areas, there is a shortage of space.

  3. It reduces rate of pollutants in the atmosphere.

  4. All of the above.

Show answer
Correct Option: D
Explanation:

Roof gardening is a type of garden which is started on the roof of the building. It is an ideal way of urban gardening.  In urban areas, local and fresh food can be available due to this gardening. To make cities more efficient and to reduce pollution. It reduces heat buildup in cities in the summer season.

So, the correct option is 'All of the above'.

Which is wrong among the following?

evs modern agriculture agricultural practices in india different types of farming and agriculture various agricultural practices

  1. Anabaena and Nostoc are capable of fixing nitrogen in free state.

  2. Root nodule forming nitrogen fixers live as aerobes under free living state.

  3. Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins.

  4. Nitrosomonas and Nitrobacter are chemoautotrophs.

Show answer
Correct Option: A