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