Tag: economic importance of plants and animals

Questions Related to economic importance of plants and animals

Why is vivipary an undesirable character for annual crop plants?

evs economic importance of plants and animals manure manures and fertilisers role of organic manures in soil management

  1. It reduces vigour of the plant

  2. It adversely affects the fertility of the plant

  3. The seeds exhibit long dormancy

  4. The seeds connot be stored under normal conditions for next season

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Correct Option: A

Which of the following is true for Cash crop farming?

evs economic importance of plants and animals manure manures and fertilisers role of organic manures in soil management

  1. Cash crop farming is for profit

  2. Monocropping or sole cropping, which is the growing of a single crop on a piece of land, is

    common with cash crop

  3. It is called commercial farming

  4. All of the above

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Correct Option: D
Explanation:

Explanation: A cash crop is an agricultural crop which is grown for sale to return a profit. It is typically purchased by parties separate from a farm. The term cash crop is applied exclusively to the agricultural production of plants; animal agriculture is not a part of the terminology.

A crop plant which can grow in nitrogen deficient soils without external supply of it is?

evs economic importance of plants and animals manure manures and fertilisers role of organic manures in soil management

  1. Allium sativum

  2. Gossypium herbaceum

  3. Cajanus cajan

  4. Helianthus annus

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Correct Option: C

Feathery stigma occurs in.

evs economic importance of plants and animals manure manures and fertilisers role of organic manures in soil management

  1. Pea

  2. Wheat/ Jowar

  3. Datura

  4. Caesalpinia

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Correct Option: B

Krishna/Ratna and 'Jaya' are varieties of

evs economic importance of plants and animals manure manures and fertilisers role of organic manures in soil management

  1. Maize

  2. Wheat

  3. Rice

  4. Barley.

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Correct Option: C

Principal cereal crop of India is

evs economic importance of plants and animals manure manures and fertilisers role of organic manures in soil management

  1. Wheat

  2. Rice

  3. Maize

  4. Barley.

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Correct Option: B

Which of the following plants is used to extract the blue dye?

evs economic importance of plants and animals manure manures and fertilisers role of organic manures in soil management

  1. Trifolium

  2. Indigofera

  3. Lupin

  4. Cassia

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Correct Option: B
Explanation:
The name of the plant is Indigofera tinctoria , which is under the family fabaceae.  This plant is used to produce blue denim jeans. On average a single pair of blue denim jeans need 3-12 gram of indigo.

This plant is required to do dye wool and silk products. This plant is normally found in tropical area. Indigo is very safe for the human skin and it is also chemical free.
Correct answer is B.

_____________ is a practice of clearing and burning the forest area for cultivation of crops for 3-4 years and shifting.

evs economic importance of plants and animals manure manures and fertilisers role of organic manures in soil management

  1. Jhum cultivation

  2. Horticulture

  3. Taungya cultivation

  4. Agrisilviculture

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Correct Option: A