MCQs Botany-30 Posted on April 3, 2025August 30, 2025Author agropublishers 0 1. What is the primary component of the phloem tissue responsible for transporting organic compounds, such as sugars and amino acids? Sieve tubes Guard cells Tracheids Xylem vessels 2. Where does the Calvin cycle (light-independent stage of photosynthesis) occur? Mitochondria Cytoplast Vacuole Chloroplast stroma 3. Agar is a jelly-like structure, and which group of algae is commercially obtained from? Brown algae Green algae Blue-green algae Red algae 4. What distinctive feature of Crassulacean Acid Metabolism (CAM) plants sets them apart from C3 and C4 plants in terms of CO2 fixation? The Calvin cycle takes place in bundle sheath cells CO2 fixation occurs exclusively during the day CAM plants rely on a different enzyme for CO2 fixation The CO2 is fixed at night and stored as malic acid 5. What is the overall chemical equation of photosynthesis, which occurs in the chloroplasts of plant cells? Oxygen + Glucose → Water + Carbon dioxide Light energy → Thermal energy Light energy → Mechanical energy Water + Carbon dioxide → Glucose + Oxygen 6. In which part of a flower does fertilization occur? Ovary Stigma Style Anther 7. In a hypotonic solution, cells experience ———- No change Active transport Endosmosis Exosmosis 8. ————– is a primary factor in plant identification Flower color Root depth Plant height Leaf shape and arrangement 9. What is the primary function of the root cap? To protect the apical meristem and aid in root penetration To facilitate gas exchange in the root To absorb water and minerals from the soil To store carbohydrates for plant growth 10. Which pigment is directly involved in absorbing light energy for photosynthesis? Anthocyanin Xanthophyll Carotene Chlorophyll a Loading …
