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