Plant Growth and Development PYQs
All NEET previous year questions from Plant Growth and Development — with explanations.
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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?
Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants?
Read the following statements on plant growth and development. A. Parthenocarpy can be induced by auxins. B. Plant growth regulators can be involved in promotion as well as inhibition of growth. C. Dedifferentiation is a pre-requisite for re-dedifferentiation. D. Abscisic acid is a plant growth promoter. E. Apical dominance promotes the growth of lateral buds. Choose the option with all correct statements.
Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin
Spraying sugarcane crop with which of the following plant growth regulators, increases the length of stem, thus increasing the yield?
Which hormone promotes internode/petiole elongation in deep water rice?
Axile placentation is observed in
Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed production?
Production of cucumber has increased manifold in recent years. Application of which of the following phytohormones has resulted in this increased yield as the hormone is known to produce female flowers in the plants:
The gaseous plant growth regulator is used in plants to:
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called
The site of perception of light in plants during photoperiodism is:
The plant hormone used to destroy weeds in a field is:
The process of growth is maximum during
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Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.
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Removal of shoot tips is a very useful technique to boost the production of tea-leaves. This is because
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In order to increase the yield of sugarcane crop, which of the following plant growth regulators should be sprayed?
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Which of the following elements is responsible for maintaining turgor in cells?
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Fruit and leaf drop at early stages can be prevented by the application of
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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?
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Phytochrome is a
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Auxin can be bioassayed by:
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A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white-coloured like albinos. Which of the following terms will you use to describe them?
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Which one of the following growth regulators is known as stress hormone?
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During seed germination its stored food is mobilized by
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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 commonly used plant growth hormones in tea plantations is :
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Root development is promoted by :
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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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