Home · NEET UG · Biology · Plant - Growth and Development

Plant - Growth and Development — NEET UG Biology PYQs

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

Plant - Growth and Development — NEET UG Biology PYQs

How many of the following plants are day neutral plants (DNP)? Dahlia, Pea, Aster, Tobacco, Wheat, Poppy, Tomato, Cotton, Soybean, Sugarbeet, Cabbage, Maize, Balsam, Spinach

Accelerated pace of growth is observed in plants during __________.

Given below are two statements about vernalization. Statement I - Generally vernalization is effective at seed stage in annual plants. Statement II - The site of vernalization is b

Gibberellins promote flowering in ___________.

Which of the following statements are CORRECT about phytochromes? A. Phytochrome pigment exists in two forms. B. Two forms of phytochrome are interconvertible. C. Pfr form of phyto

Which hormone stimulates formation of lateral and adventitious roots?

Application of which plant hormone overcomes the requirement of vernalization?

Which of the following plants require longer duration of light than the critical photoperiod, for flowering?

What is true about Arithmetic and Geometric growth curves?

Geometric growth can be expressed mathematically by the equation W₁=W₀e^ rt . ' W₁ ' stands for ________.

Intrinsic plasticity is observed in the leaves of __________.

The process of seed germination is stimulated due to the synthesis of hydrolytic enzymes. Which hormone is responsible for this process?

Gibberellins promote bolting prior to flowering in plants like _________.

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R). Assertion (A): Redifferentiation involves loss of the ability to divide and g

The first Cytokinin was discovered by ----(A)------ during investigation of callus tissue culture of ------(B)----

In which phase of plant growth, the rate of growth slows down and comes to a steady state?

Identify the INCORRECT statement about gibberellins.

If the dark period is interrupted even by a flash of light, plants like tobacco and soybean ______

Which one of the following type of auxins produced in the placental tissue of the unfertilized ovary causes parthenocarpy in pineapple, and banana?

Match List I with List II List I (Phytohormones) List II (Applications causing) (A). Auxins (I). Antitranspirent (B). Gibberellins (II). Epinasty (C). Ethylene (III). Apical domina

While describing the dynamics of cell growth, the ratio of change in number of cells over the time interval is called ____.

Match the instruments given in Column I with the type of growth measured by them given in Column II: Column I (Instrument) Column II (Type of growth) (A) Horizontal microscope (I)

Tobacco plants produce flowers in the following conditions EXCEPT:

The rate of three phases of growth in plants can be explained by ________ graph.

If the dark period is interrupted by a flash of red light of 660 nm, then the short day plants do not flower. But if it is followed by ____, these plants will flower.

Which one of the following is the most striking effect of gibberellins?

Match List I with List II List I (Process of growth in plants.) List II (Examples) (A). Differentiation (I). Cork cambium (B). Dedifferentiation (II). Secondary xylem (C). Rediffer

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R). Assertion (A): Leaves produce a light receiving protein that induces flowerin

In some plants, fruits develop without fertilization because the placental tissue of unfertilized ovary produces

The natural auxin produced by the placental tissue of the unfertilized ovary and responsible for enlargement of ovary into fruit is ---------------.

Given below are two statements: Statement (I): SDP require long uninterrupted dark period for flowering. Statement (II): If dark period is interrupted even by a flash of light, SDP

If a leaf is 50 cm ^2 in size and the growth rate per day is 5 cm ^2 , then its relative growth rate would become ------------.

Which of the following is NOT the function of cytokinin ?

Which of the following pair of plant hormones have mevalonic acid as the precursor?

Match the plant hormones given in Column I with the scientists who isolated them given in Column II. Column- I Column- II A) Auxin I) Yabuta and Sumiki B) Gibberellin II) Denny, Ga