Tea plants are grown by stem cuttings. If we dip the lower cut end of a cutting in dilute solution of auxins (IAA, IBA, etc), very soon large number of roots are developed on the cut ends, due to which these cutting develop into successful plants.
NEET UG 2010 — Botany Plant - Growth and Development
One of the commonly used plant growth hormone in tea plantations is
Held on 30 Apr 2010 · Verified 9 Jul 2026.
ethylene
abscissic acid
zeatin
indole-3-acetic acid
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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-differentiation. (D) Abscisic acid is a plant growth promoter. (E) Apical dominance promotes the growth of lateral buds. Choose the option with all correct statements.
Match List-I with List-II : \begin{array}{lll} & 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 in nutrient mobilisation \\D. & Cytokinin & IV.& Promotes bolting in beet, cabbage etc\end{array} Choose the correct answer from the options given below:
F. Skoog observed that callus proliferated from the internodal segments of tobacco stem when auxin was supplied with one of the following except :
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. Ethylene induces flowering in Mango. E. Abscisic acid induces parthenocarpy. Choose the correct set of statements from the options given below:
Work through every NEET UG Plant - Growth and Development PYQ, year by year.