Anatomy of Flowering Plants Previous Year Questions — NEET Biology

3 past-year Anatomy of Flowering Plants questions from NEET (Biology).

Q102 (2024)

In angiosperms, root hairs arise from which one of the following regions of the root?
  1. The root cap zone
  2. The region of meristematic activity
  3. The region of elongation
  4. The region of maturation
### Related Formula Root Zones: Root Cap $\rightarrow$ Meristematic $\rightarrow$ Elongation $\rightarrow$ Maturation (Root Hairs). ### Core Logic In angiosperms, epidermal cells in the region of maturation differentiate into fine, unicellular tubular extensions called root hairs, which absorb water and minerals. ### Step 1: Conclusion Root hairs arise from the region of maturation. Correct option is (4). ### Pattern Recognition Root hairs = Region of Maturation. ### Evaluation Rubric / Model Answer null ### Chapter Mix Class 11 Biology: Anatomy of Flowering Plants

Q107 (2024)

The main function of bulliform cells in grasses is :
  1. to make the leaf impermeable to fungal spores.
  2. to perform photosynthesis.
  3. to minimize water loss during water stress.
  4. to transport water.
### Related Formula Bulliform cells (motor cells in monocot leaf epidermis): Flaccid (water stress) $\rightarrow$ Inward rolling of leaf $\rightarrow$ Reduced exposed surface area. ### Core Logic In grasses, large, empty, colorless epidermal cells called bulliform cells absorb water to become turgid (exposing leaf surface) and lose water under drought stress to become flaccid, causing the leaves to curl inward to minimize water loss. ### Step 1: Conclusion The main function is to minimize water loss during water stress. Option (3) is correct. ### Pattern Recognition Bulliform cells in grasses = Leaf curling = Minimize transpiration/water loss. ### Evaluation Rubric / Model Answer null ### Chapter Mix Class 11 Biology: Anatomy of Flowering Plants

Q109 (2024)

Match List-I with List-II : <div style="overflow-x: auto; margin: 1rem 0;"><table style="width: 100%; border-collapse: collapse; text-align: left; font-size: 14px;"><thead><tr><th style="border: 1px solid #888; padding: 8px;"></th><th style="border: 1px solid #888; padding: 8px;">List-I</th><th style="border: 1px solid #888; padding: 8px;"></th><th style="border: 1px solid #888; padding: 8px;">List-II</th></tr></thead><tbody><tr><td style="border: 1px solid #888; padding: 8px;">A.</td><td style="border: 1px solid #888; padding: 8px;">Conjunctive tissue</td><td style="border: 1px solid #888; padding: 8px;">I.</td><td style="border: 1px solid #888; padding: 8px;">Specialised cells in the vicinity of guard cells</td></tr><tr><td style="border: 1px solid #888; padding: 8px;">B.</td><td style="border: 1px solid #888; padding: 8px;">Casparian strips</td><td style="border: 1px solid #888; padding: 8px;">II.</td><td style="border: 1px solid #888; padding: 8px;">Endodermal cells rich in starch</td></tr><tr><td style="border: 1px solid #888; padding: 8px;">C.</td><td style="border: 1px solid #888; padding: 8px;">Subsidiary cells</td><td style="border: 1px solid #888; padding: 8px;">III.</td><td style="border: 1px solid #888; padding: 8px;">Tissue between xylem and phloem</td></tr><tr><td style="border: 1px solid #888; padding: 8px;">D.</td><td style="border: 1px solid #888; padding: 8px;">Starch sheath</td><td style="border: 1px solid #888; padding: 8px;">IV.</td><td style="border: 1px solid #888; padding: 8px;">Endodermal cells with suberin deposition</td></tr></tbody></table></div> Choose the correct answer from the options given below :
  1. A-IV, B-III, C-I, D-II
  2. A-III, B-IV, C-II, D-I
  3. A-III, B-IV, C-I, D-II
  4. A-IV, B-III, C-II, D-I
### Related Formula Conjunctive tissue: Between xylem & phloem. Casparian strips: Suberin in endodermis. Subsidiary cells: Near guard cells. Starch sheath: Endodermis in dicot stem. ### Core Logic - Conjunctive tissue: Parenchymatous tissue lying between xylem and phloem $\rightarrow$ III - Casparian strips: Suberin deposition on endodermal walls $\rightarrow$ IV - Subsidiary cells: Specialized epidermal cells surrounding guard cells $\rightarrow$ I - Starch sheath: Endodermis of dicot stem rich in starch grains $\rightarrow$ II ### Step 1: Match Verification Matching layout: A-III, B-IV, C-I, D-II. Option (3) is correct. ### Pattern Recognition Subsidiary cells = Vicinity of guard cells (C-I). Casparian strips = Suberin (B-IV). Matches option (3). ### Evaluation Rubric / Model Answer null ### Chapter Mix Class 11 Biology: Anatomy of Flowering Plants
Rankbit System
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%)

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