NEET · Biology —

Plant Growth and Development appeared 3 times across 1 year — 3.3% of Biology. This question is from Plant Growth Regulators.

Year 2024 Total
Questions 3 3
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Match List-I with List-II
List-I (Growth Regulator)List-II (Function/Effect)
A.2,4-DI.Brewing industry
B.GA₃II.Stimulation of stomatal closure
C.KinetinIII.Herbicide
D.ABAIV.Nutrient mobilisation
Choose the correct answer from the options given below :

Solution & Explanation

Related Formula

2,4-D (Synthetic Auxin) = Herbicide GA₃ (Gibberellin) = Malting/Brewing Kinetin (Cytokinin) = Nutrient mobilization (delays senescence) ABA (Abscisic Acid) = Stress hormone (Stomatal closure)

Core Logic
  • 2,4-D: Synthetic auxin used as a selective weedicide/herbicide arrow III
  • GA₃: Speeds up malting process in brewing industry arrow I
  • Kinetin: Promotes nutrient mobilization to delay senescence arrow IV
  • ABA: Stimulates stomatal closure under stress arrow II
Step 1: Match Verification

Match sequence: A-III, B-I, C-IV, D-II. Correct option is (3).

Pattern Recognition

2,4-D = Herbicide (A-III). ABA = Stomatal closure (D-II). Matches option (3).

Chapter Mix

Class 11 Biology: Plant Growth and Development

Reference Study Guides

Plant Growth And Development

More Plant Growth and Development Previous-Year Questions

Q103 neet_2024_05_may_morning Phases of Plant Cell Growth
Which one of the following is not a characteristic of plant cells in the phase of elongation?
  • A. Increased vacuolation
  • B. Large conspicuous nuclei
  • C. Cell enlargement
  • D. New cell wall deposition

Solution

Related Formula

Phase of Elongation: Cell enlargement, Increased vacuolation, New cell wall deposition. Meristematic Phase: Dense cytoplasm, Large conspicuous nuclei.

Core Logic

Plant cells in the phase of elongation are characterized by cell enlargement, increased vacuolation, and new cell wall deposition. Having a large conspicuous nucleus with rich protoplasm is characteristic of the meristematic phase.

Step 1: Selection

Therefore, 'Large conspicuous nuclei' is NOT a feature of the elongation phase. Option (2) is correct.

Pattern Recognition

Conspicuous nuclei + dense cytoplasm = Meristematic phase, NOT elongation phase.

Chapter Mix

Class 11 Biology: Plant Growth and Development

Q111 neet_2024_05_may_morning Developmental Plasticity
Heterophyllous development in response to environment is an example of which of the following phenomena?
  • A. Dedifferentiation
  • B. Elasticity
  • C. Redifferentiation
  • D. Plasticity

Solution

Related Formula

Plasticity: Ability of plants to follow different pathways in response to environment or phase of life to form different structures.

Core Logic

Heterophylly (e.g., in buttercup due to environment, or cotton, coriander, larkspur due to growth phases) is a classic example of plant plasticity.

Step 1: Selection

The phenomenon is called Plasticity. Option (4) is correct.

Pattern Recognition

Heterophylly in cotton/coriander/buttercup = Plasticity.

Chapter Mix

Class 11 Biology: Plant Growth and Development

More Plant Growth and Development Questions — neet_2024_05_may_morning

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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)