Practice test

Plant morphology and physiology - Test Set 5

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    The sunlight energy used by green plants in photosynthesis is transformed into:
    1. Chemical energy
    2. Physical energy
    3. Both (a) and (b)
    4. None of the above
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  2. Question 2

    In plants, which one of the following gases is released during photosynthesis?
    1. Carbon dioxide
    2. Oxygen
    3. Hydrogen
    4. Methane
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  3. Question 3

    Which of the following plant shows chloroplast dimorphism?
    1. Sugarbeet
    2. Rice
    3. Wheat
    4. Sugarcane
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  4. Question 4

    The substrate of photorespiration is:
    1. Fructose
    2. Pyruvic acid
    3. Glycolate
    4. Glucose
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  5. Question 5

    Which one among the following is a plant hormone?
    1. Insulin
    2. Thyroxin
    3. Gibberellin
    4. Oestrogen
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  6. Question 6

    Which one among the following hormones stimulates the plant cells to grow in a manner such that the plant appears to be bent towards light?
    1. Cytokinin
    2. Auxin
    3. Gibberellin
    4. Abscisic acid
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  7. Question 7

    The small and simple molecules of different chemical configurations are plants growth regulators, these are:
    1. Carbohydrates, fats and proteins
    2. Indole compounds, adenine, derived karoenoid and turpin
    3. Fatty acids, glucose and vitamins
    4. Vitamin-C, vitamin-D and glucose
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  8. Question 8

    Which one of the following plant hormones are incorrectly paired?
    1. Abscisic acid — transpiration
    2. Auxins — apical dominance
    3. Cytokinis — senescence
    4. Gibberellins — bud and seed dormancy
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  9. Question 9

    Seed dormancy is regulated by:
    1. Abscisic acid
    2. Gibberellic acid
    3. Indole acetic acid
    4. Ethylene
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  10. Question 10

    Which one among the following hormones stimulates the plant cells to grow in a manner such that the plant appears to be bent towards light?
    1. Cytokinin
    2. Auxin
    3. Gibberellin
    4. Abscisic acid
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  11. Question 11

    Phototropic movement is controlled by:
    1. Auxin
    2. Gibberellin
    3. Cytokinin
    4. Ethylene
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  12. Question 12

    Photoperiodism affects:
    1. Flowering
    2. Vegetative growth
    3. Frutting
    4. All of the above
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  13. Question 13

    When we touch leaves of Touch me not plant, they close, these movements are called:
    1. Photoanatic movement
    2. Nyctinastic movements
    3. Seismonastic movements
    4. Chemonastic movements
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  14. Question 14

    Which of the following is true for photoperiodic?
    1. It occurs only in plants
    2. It is related to flowering in plants
    3. It is related to feathers of animals
    4. It is the reaction of organisms to the length of day or night
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  15. Question 15

    Smut of wheat is coused by:
    1. Ustilago maydis
    2. Puccinina graminis
    3. Ustilago tritici
    4. Colletotrichum falcatum
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  16. Question 16

    Red rot of sugarcance is caused by:
    1. Alternaria alternata
    2. Phytophthora infestans
    3. Colletotrichum falcatum
    4. Cercospora personata
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  17. Question 17

    Damping off of seedlings is caused by:
    1. Peronosphola parasitica
    2. Albugo candida
    3. Phytophthora infestans
    4. Pythium debaryanum
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  18. Question 18

    Assertion (A) Stomata remains open during the day time.
    Reason (R) Stomata helps in exchange of gases.
    1. If both A and R are true and R is the correct explanation of A
    2. If both A and R are true, but R is not the correct explanation of A
    3. If A is true, but R is false
    4. If both A and R are false
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  19. Question 19

    A peduncle is a:
    1. Stalk of flower
    2. Stalk of leaf
    3. Stalk of a fruit
    4. None of the above
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  20. Question 20

    Name of an insectivorous plant:
    1. Gulancha
    2. Nayantara
    3. Basak
    4. Pitcher plant
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