Theoretical and Experimental Plant Physiology. We covered all the Theoretical and Experimental Plant Physiology MCQ in this post for free so that you can practice well for the exam.
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MCQ on Theoretical and Experimental Plant Physiology for Students
A student was doing an experiment on increasing cell division among plants. She asked her supervisor to suggest a specific plant hormone for the same. Had you been her supervisor, which plants hormone would you suggest?
(a) Abscisic acid
(b) Gibberellins
(c) Cytokinin
(d) Auxin
Option c – Cytokinin
Which one of the following acids is predominantly found in tomatoes?
(a) Acetic acid
(b) Tartaric acid
(c) Oxalic acid
(d) Lactic acid
Option c – Oxalic acid
During seed germination, the part of the embryo which grows into a root is
(a) Radicle
(b) Plumule
(c) Cotyledon
(d) Epicotyl
Option a – Radicle
Which plant’s leaves are used to make the outer wrap of ‘beedi’?
(a) Cinchona
(b) Tendu
(c) Opium
(d) Areca
Option b – Tendu
The chief constituent of cotton is
(a) Protein
(b) Fatty acid
(c) Cellulose
(d) Glycerine
Option c – Cellulose
Which of the following leguminous plant is also a petro plant?
(a) Pigeon pea
(b) Pea
(c) Gram
(d) Pongamia
Option d – Pongamia
Pneumatophores are present in
(a) Mangrove plants
(b) Epiphytic plants
(c) Hydrophytic plants.
(d) Insectivores plants
Option a – Mangrove plants
Which one of the following is a useful functional association between fungi and the roots of higher plants?
(a) Biofertilizer
(b) Coralloid root
(c) Lichen
(d) Mycorrhiza
Option d – Mycorrhiza
Which one of the following is an active component of the oil of clove?
(a) Menthol
(b) Eugenol
(c) Methanol
(d) Benzaldehyde
Option b – Eugenol
Noscapine is obtained from
(a) Poppy
(b) Basil
(c) Eucalyptus
(d) Ephedra
Option a – Poppy
Which one of the following is not a carnivorous plant?
(a) Heliamphora sp.
(b) Drosera sp.
(c) Nepenthes sp.
(d) Thymus sp.
Option d – Thymus sp.
The tallest terrestrial tree on the earth is :
(a) Deodar
(b) Eucalyptus
(c) Sequoia
(d) Pine
Option c – Sequoia
Cloves, used as a spice are derived from which of the following plant parts?
(a) Seeds
(b) Fruits
(c) Flower buds
(d) Leaves
Option c – Flower buds
Quinine is obtained from which part of the plant?
(a) Roots
(b) Stem
(c) Leaves
(d) Bark
Option d – Bark
If the xylem of a plant is mechanically blocked, which of the following functions of the plant will be affected?
(a) Transport of water only
(b) Transport of water and solutes
(c) Transport of solutes only
(d) Transport of gases
Option b – Transport of water and solutes
Which one of the following features is an indication of the modification of the stem of a plant?
(a) Presence of ‘eye’ on potato
(b) ‘Scale’ found in onion
(c) ‘Tendril’ found in pea
(d) ‘Hair’ present in carrot
Option a – Presence of ‘eye’ on potato
The by-product of photosynthesis is
(a) CO₂
(b) O2
(c) energy
(d) sugar
(e) None of the above/More than one of the above
Option b – O2
Epiphytes are plants that depend on other plants for
(a) Food
(b) Mechanical support
(c) Shade
(d) Water
Option b – Mechanical support
Plants that grow in saline soil are
(a) Xerophytes
(b) Hydrophytes
(c) Halophytes
(d) Lithophytes
Option c – Halophytes
Plants that grow on rocks are known as
(a) Mesophytes
(b) Lithophytes
(c) Sclerophytes
(d) Oxylophytes
Option b – Lithophytes
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