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Botany - 3 (B.Sc. Agriculture)

Botany and Agricultural Science - covering plant biology, crop management, plant pathology, and agricultural biotechnology

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is not a correct match?

  1. Root knot disease – Nematode Heterodera marioni
  2. Smut of bajra – Helminthosporium sacchari
  3. Covered smut of barley – Ustilago nuda
  4. Late blight of potato – Phytophthora infestans
Question 2 Multiple Choice (Single Answer)

Cytokinesis occurs in an animal cell by

  1. furrowing
  2. burrowing
  3. borrowing
  4. None of these
Question 3 Multiple Choice (Single Answer)

Which of the following is used to neutralise acidic soils for better plant growth?

  1. Water
  2. Sodium hydroxide
  3. Calcium oxide
  4. Sulphuric acid
  5. Dung
Question 4 Multiple Choice (Single Answer)

_______ of water lead(s) to swelling of the seed.

  1. Imbibition
  2. Releasing
  3. Inhibition
  4. All of the above
Question 5 Multiple Choice (Single Answer)

The national herbarium of our country is located in the Indian Botanical Garden, which is located in

  1. Calcutta
  2. Ooty
  3. Bangalore
  4. Mumbai
Question 6 Multiple Choice (Single Answer)

The share of agriculture as a factor in India's GDP in 2006-07 was

  1. 17.5%
  2. 18.5%
  3. 19.5%
  4. 20.25%
Question 7 Multiple Choice (Single Answer)

Which of the following statements about genetically modified (GM) crop Bt-brinjal is/are incorrect?

I. The Genetic Engineering Approval Committee (GEAC) has approved its commercial cultivation.
II. The Union Ministry of Environment and Forests has accepted the recommendations of the GEAC.
III. Bt-brinjal is the first genetically modified (GM) food crop to have been granted approval by the GEAC.

  1. Only I
  2. Only II
  3. Only II and III
  4. Only I and III
  5. I, II and III
Question 8 Multiple Choice (Single Answer)

Which of the following is an example of point mutation?

  1. Sickle cell anaemia
  2. Down's syndrome
  3. Turner's syndrome
  4. Klinefelter's syndrome
Question 9 Multiple Choice (Single Answer)

Foot and mouth disease in cattles is caused by a

  1. bacterium
  2. fungus
  3. amoeba
  4. virus
  5. protozoan
Question 10 Multiple Choice (Single Answer)

At what stage of the vegetative growth of crops are weedicides sprayed in the fields?

  1. Before sowing seeds
  2. After flowering
  3. Just before harvesting
  4. Before flowering
Question 11 Multiple Choice (Single Answer)

The botanical name of sal is

  1. Pinnus roxburghii
  2. Tectona grandis
  3. Taxus buccata
  4. Shorea robusta
Question 12 Multiple Choice (Single Answer)

The most poisonous mushroom is

  1. agaricus
  2. amanita
  3. pleurotus
  4. volvariella
  5. None of these
Question 13 Multiple Choice (Single Answer)

Directions: Choose the appropriate answer from the options given below.

______ is a mature ovule containing an embryo.

  1. Leaf
  2. Flower
  3. Fruit
  4. Seed
Question 14 Multiple Choice (Single Answer)

Improper handling and storage of cereal grains and oilseeds results in the production of toxins known as aflatoxins which are not generally destroyed by normal cooking process. Aflatoxins are produced by

  1. bacteria
  2. protozoa
  3. moulds
  4. viruses
Question 15 Multiple Choice (Single Answer)

The most common algal partner in lichens belongs to

  1. blue-green algae
  2. green algae
  3. red algae
  4. brown algae
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