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Which one of the following is not a characteristic of plant cells in the phase of elongation?
Match List-I with List-II Choose the correct answer from the options given below :
Heterophyllous development in response to environment is an example of which of the following phenomena?
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called
The plant hormone used to destroy weeds in a field is:
The process of growth is maximum during
You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?
Phytochrome is a
Auxin can be bioassayed by:
During seed germination its stored food is mobilized by
Through their effect on plant growth regulators, what do the temperature and light control in plants?
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Vernalisation stimulates flowering in:
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Which one of the following generally acts as an antagonist to gibberellins?
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One of the synthetic auxins is:
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Which one of the following acids is a derivative of carotenoids?
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Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in
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Importance of day length in flowering of plants was first shown in
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Suggest three ways to break seed dormancy.
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Who discovered photoperiodism?
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Select one SDP and one LDP from the following plants: Chrysanthemum, Rice, Spinach, Barley, Radish.
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Who gave the term 'Phytochrome'? Give one specific feature of phytochrome.
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What is the type of movement of twiner and opening of flower?
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Parthenocarpic tomato fruits can be produced by:
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How does pruning help in making the hedge dense?
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Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?
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Treatment of seed at low temperature under moist conditions to break its dormancy is called:
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Moss peat is used as a packing material for sending flowers and live plants to distant places because:
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An enzyme that can stimulate germination of barley seeds is:
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