MCQs Botany-26 Posted on March 4, 2025August 30, 2025Author agropublishers 0 1. Lenticels are involved in———– Mechanical support Food storage Gas exchange Water absorption 2. Photonasty is a type of nastic movement that involves the opening or closing of plant organs in response to———– Light intensity Mechanical stimuli Gravitational forces Temperature fluctuations 3. Taxonomically, mosses are included in which group of plants? Bryophytes Pteridophytes Gymnosperms None of these 4. Terpenoids are a major component of ———- plants and are used in their chemotaxonomy Rose Tea Citrus Coffee 5. Which group of plants produces seeds but does not have flowers or fruits? Pteridophytes Bryophytes Gymnosperms Mosses 6. The Commelinaceae family is commonly known as the ——— Spiderwort family Orchid family Aloe family Bromeliad family 7. The plant hormone ——— is primarily responsible for phototropism Auxin Gibberellin Cytokinin Ethylene 8. What is the role of statoliths in gravitropism? To perceive light intensity To perceive gravitational force To perceive water availability To perceive mechanical stimuli 9. —- is mong the techniques used to study gene expression in plants ELISA (Enzyme-Linked Immunosorbent Assay) Microscopy Serology RT-PCR (Reverse Transcription PCR) 10. ——- is a cultural method for plant disease control Application of fungicides Biological control Use of resistant varieties Crop rotation Loading …
