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Plant Hormones (AIPVT)

Description: Proteins Plant Growth
Number of Questions: 15
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Tags: Proteins Plant Growth
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Which plant hormone is known as anti-gibberellin hormone?

  1. Florigen

  2. ABA

  3. Ethylene

  4. Auxin

Show answer
Correct Option: B
Explanation:

ABA (abscisic acid) has several roles opposite to gibberellin and is known as anti-gibberellin hormone.

Which of the following is a gaseous hormone?

  1. Auxin

  2. Gibberellin

  3. Abscisic acid

  4. Ethylene

Show answer
Correct Option: D
Explanation:

Ethylene is a gaseous hormone.

Which hormone is used for ripening of fruits?

  1. ABA

  2. Ethylene

  3. Indole acetic acid

  4. Cytokinin

Show answer
Correct Option: B
Explanation:

Ethylene induces the ripening of fruits by increasing rate of respiration.

What are anthesins required for?

  1. Growth of stem

  2. Formation of flowers

  3. Dormancy of seeds

  4. Inhibition of elongation of stem

Show answer
Correct Option: B
Explanation:

Anthesins are required for flower formation.

Who discovered flowering hormone florigen?

  1. Skoog

  2. Carns and Addicott

  3. Cajiachjan

  4. Crocker et al

Show answer
Correct Option: C
Explanation:

Cajiachjan discovered florigen in 1936.

In which plant is hypogeal germination of seeds seen?

  1. Rhizopora

  2. Gram

  3. Bean

  4. Mangrove

Show answer
Correct Option: B
Explanation:

Hypogeal germination of seeds is seen in gram.

Soybean is referred as

  1. short day plant

  2. long day plant

  3. day neutral plant

  4. short night plant

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Correct Option: A
Explanation:

Soybean is a short day plant.

What is vernalisation?

  1. Growth curve of plant in response to light

  2. Method of inducing early flowering in plants by treatment of their seeds at low temperature

  3. Effect of length of the day on the behavior of plant

  4. Giving birth to young plants directly

Show answer
Correct Option: B
Explanation:

Method of inducing early flowering in plants by treatment of seeds at low temperature is called vernalisation.

Which of the following is a short night plant?

  1. Cotton

  2. Strawberry

  3. Alfa alfa

  4. Sugarcane

Show answer
Correct Option: C
Explanation:

Alfa alfa is a short night plant.

Which light promotes germination?

  1. Blue

  2. Red

  3. Infrared

  4. Ultraviolet

Show answer
Correct Option: B
Explanation:

Germination is promoted by red light.

Which hormone induces flowering at low temperatures?

  1. Florigen

  2. Vernalin

  3. Dormin

  4. Auxin

Show answer
Correct Option: B
Explanation:

Vernalin induces flowering at low temperatures.

Which of the following is a major function of cytokinin?

  1. It inhibits elongation of stem.

  2. It causes dormancy of seed.

  3. It stimulate cell division, even in non-meristematic tissues.

  4. It causes parthenocarpy.

Show answer
Correct Option: C
Explanation:

Cytokinin, in presence of auxins, stimulates cell division, even in non-meristematic tissues.

Which of the following is a growth inhibitor?

  1. Auxin

  2. ABA

  3. Gibberellin

  4. Cytokinin

Show answer
Correct Option: B
Explanation:

ABA is a naturally occurring growth inhibitor.

Where is abscisic acid synthesised?

  1. Roots

  2. Stems

  3. Leaves

  4. Flowers

Show answer
Correct Option: C
Explanation:

Abscisic acid is synthesised in leaves.

Which amino acid is required for formation of ethylene?

  1. Tryptophan

  2. Proline

  3. Cysteine

  4. Methionine

Show answer
Correct Option: D
Explanation:

Ethylene is formed in plants from amino acid methionine.

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