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