Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas NEET2020BotanyPlant - Growth and DevelopmentPractice

2,4-dichlorophenoxyacetic acid is used to eliminate _____ weeds from a ____ crop field.

Options

  1. Amonocotyledonous; dicot
  2. Bdicotyledonous; monocot
  3. Cbiennial; annual
  4. Dbiennial; perennial

Correct answer

B. dicotyledonous; monocot

Step-by-step solution

Auxin, 2,4-Dichlorophenoxyacetic acid is used to kill dicotyledonous or broadleaf weeds. It does not affect mature monocotyledonous plants. It is used to prepare weed-free lawns by gardeners.

Practice Plant - Growth and Development on Quantrex Academy →

More from Plant - Growth and Development

Heterophyllous development in response to environment is an example of which of the following phenomena ? 2026Length 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 ? 2026Which of the following plant growth regulators promotes internode elongation prior to flowering in cabbage ? 2026Which one of the following is not a characteristic of plant cells in the phase of elongation ? 2026Match 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 2026Which of the following plant growth regulators is used as herbicide ? 2026Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants? 2025Read 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 inhib 2025 Full Plant - Growth and Development list All NTA Abhyas NEET PYQs