Gaseous Exchange in Plants — NEET Biology
📚 Practice ConceptPlants unlike animals have no special systems for breathing or gaseous exchange. Stomata and lenticels allow gaseous exchange by diffusion. Almost all living cells in a plant have their surfaces exposed to air.
Match the following columns that describe plant structures or conditions related to gaseous exchange: Column I (Structure / Condition) A. Stomata B. Lenticels C. Loose packing of parenchyma cells D. Living cells in thick woody stems Column II (Location / Feature) I. Found on bark of woody stems II. Present on leaf epidermis III. Creates an interconnected network of air spaces IV. Organized in thin layers inside and beneath the bark Column III (Associated Role / Characteristic) P. Facilitate gas diffusion in non-leafy parts Q. Enable direct contact of most living cells with air R. Allow gas exchange primarily in leaves S. Exhibit low metabolic demands compared to animals
View solution & NCERT explanation
Correct answer: C — A-II-R, B-I-P, C-III-Q, D-IV-S
This question requires matching plant features across three columns: structure/condition, location/feature, and associated role/characteristic related to gas exchange. A. Stomata: (Column II) Present on leaf epidermis, (Column III) Allow gas exchange primarily in leaves. (NCERT Page 154, Para 4) B. Lenticels: (Column II) Found on bark of woody stems, (Column III) Facilitate gas diffusion in non-leafy parts. (NCERT Page 155, Para 1) C. Loose packing of parenchyma cells: (Column II) Creates an interconnected network of air spaces, (Column III) Enable direct contact of most living cells with air. (NCERT Page 155, Para 1) D. Living cells in thick woody stems: (Column II) Organized in thin layers inside and beneath the bark, (Column III) Exhibit low metabolic demands compared to animals. (NCERT Page 155, Para 1 and Page 154, Para 4) Therefore, the correct combined match is A-II-R, B-I-P, C-III-Q, D-IV-S, which corresponds to option A. This comprehensive matching tests the understanding of structural adaptations for gas exchange in different plant parts.
What does NCERT say about Plants unlike animals have?
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Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.