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NEET Plant - Growth and Development PYQs with Solutions

757 previous year questions from Plant - Growth and Development (NEET UG Botany) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

757 questionsBotany2001–2026Answers + solutions

About Plant - Growth and Development PYQs

Plant - Growth and Development has 757 previous year questions in the Quantrex Academy NEET UG Botany bank. The 220 questions in this list come from NEET (157), AIIMS (34) and JIPMER (29), spanning 2001 to 2026. Each question opens on its own page with the options, the correct answer and the worked solution where available.

NEET Plant - Growth and Development PYQs with Solutions

About Plant - Growth and Development PYQs

Questions by year (this list)

Plant - Growth and Development questions with solutions

Heterophyllous development in response to environment is an example of which of the following phenomena ?

Length of the stem at time 0 is 20 cm. The arithmetic growth rate is 30 cm per day. What is the length of the stem at the end of the 7^ th day ?

Which of the following plant growth regulators promotes internode elongation prior to flowering in cabbage ?

Which one of the following is not a characteristic of plant cells in the phase of elongation ?

Match List I with List II : List I (Growth Regulator) List II (Function/Effect) A. 2,4 -D I. Brewing industry B. GA_3 II. Stimulation of stomatal closure C. Kinetin III. Herbicide

Which of the following plant growth regulators is used as herbicide ?

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

Given below are some statements about plant growth regulators. A. All GAs are acidic in nature. B. Auxins are antagonists to GAs. C. Zeatin was isolated from coconut milk. D.

Match List-I with List-II : List-I List-II A. Abscisic acid I. Promotes female flowers in cucumber B. Ethylene II. Helps seeds to withstand desiccation C. Gibberellin III. Helps

F. Skoog observed that callus proliferated from the internodal segments of tobacco stem when auxin was supplied with one of the following except :

Spraying sugarcane crop with which of the following plant growth regulators, increases the length of stem, thus, increasing the yield?

Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin

The phenomenon which is influenced by auxin and also played a major role in its discovery :

Which hormone promotes internode / petiole elongation in deep water rice?

Match List-I with List-II Choose the correct answer from the options given below:

Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed production?

Which of the following statements is not correct?

In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as:

Which of the following growth regulators is an adenine derivative?

The gaseous plant growth regulator is used in plants to:

The ability of plants to follow different pathways in response to environment leading to formation of different kinds of structures is called :

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

Which one of the following plants does not show plasticity?

The site of perception of light in plants during photoperiodism is:

The plant hormone used to destroy weeds in a field is:

Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called:

Who coined the term &#39;Kinetin&#39;?

Inhibitory substances in dormant seeds cannot be removed by subjecting seeds to:

Match the following concerning the activity/function and the phytohormone involved:- (a) Fruit ripener (i) Abscisic acid (b) Herbicide (ii) GA _ 3 (c) Bolting agent (iii) 2, 4 - D

Which of the following is not an inhibitory substance governing seed dormancy?

The process of growth is maximum during

Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.

Read the given statements and identify the PGRs X, Y and Z . X induces accumulation of salts inside the cells. Y promotes rapid elongation of leaf bases and internodes in deep

Which hormone inhibits morphogenesis?

Which of the following sets does not include all natural plant growth regulators?

Assertion : In vernalisation, flowering is induced by low temperature. Reason : ABA is growth inhibiting hormone.

Assertion : Gibberellic acid increases length of grape stalks. Reason : Ethophon hastens fruit ripening in tomato and apple.

Removal of shoot tips is very useful technique to boost the production of tea leaves. This is because

In order to increase the yield of sugarcane crop, which of the following plant growth regulators should be sprayed?

It takes a very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the

What is the site of perception of photoperiod necessary for induction of flowering in plants?

Which of the following is not a bioassay for cytokinins?

Which among the following are auxins?

Which of the following is not a plant growth inhibitor?

Identify the incorrect statement about ABA growth regulator.

Which one of the following generally acts as an antagonist to gibberellins?

Fruit and leaf drop at early stages can be prevented by the application of

One hormone hastens maturity period in juvenile conifers, a second hormone controls xylem differentiation, while the third hormone increases the tolerance of plants to various

Assertion : Storage of seeds at low temperature is possible. Reason : Respiration and enzymatic activity of seeds are very high at low temperature.

Compare the statement I and II and choose the correct option. Statement I In the flowering plants due to higher accumulation of auxins dormancy of lateral buds occurs. Statement

You are given tissue with its potential for differentiation in artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as

The Avena curvature is used for bioassay of:

Gibberellins can promote seed germination because of their influence on

Assertion : A correct concentration of auxin and cytokinin is required for the development of root and shoot in a callus. Reason : When the ratio of kinetin to auxin is high, then

Assertion : Plant growth regulators (PGRs) are very important for plant growth and development. Reason : Auxins do not induce flowering in gymnosperms.

Compare the statements I and II and choose correct option. Statement (I) Auxin promote apical dominance by suppressing the activity of lateral buds. Statement (II) In moriculture

What causes a green plant exposed to the light on only one side, to bend toward the source of light as it grows?

Typical growth curve in plants is:

Auxin can be bio assayed by:

Vernalisation is subjected to plants growing in

Ethylene is related with

Dr F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly- cut coleoptile stumps.

A few normal seedlings of tomato were kept in a dark room. After a few days, they were found to have become white-colored like albinos, Which of the following terms will you use

Which one of the following growth regulators is known as stress hormone?

Which of the following plant growth regulators (PGRs) promotes root initiation, flowering and induced parthenocarpy?

Assertion : On plotting the length of the root against time, a linear curve is obtained. Reason : An elongating root exemplifies arithmetic growth.

Hormone inducing fruit ripening is

Which of the following properties is shown by cytokinins?

Genetic dwarfism can be overcome by

Which of the following is not an auxin?

Tissue culture technique can produce infinite number or new plants from a small parental tissue. The economic importance of the technique is in raising:

The pineapple which under natural condition is difficult to blossom has been made to produce fruits throughout the year by application of:

During seed germination its stored food is mobilised by

Abscisic acid is known as the stress hormone because it

Through their effect on plant growth regulators, what do the temperature and light control in the plants?

Who coined the term 'Kinetin'?