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 Mitochondria Cytoplast Chloroplast stroma 2. Agar is a jelly-like structure, and which group of algae is commercially obtained from? Green algae Blue-green algae Red algae Brown algae 3. In a hypotonic solution, cells experience ———- Endosmosis No change Exosmosis Active transport 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 CO2 is fixed at night and stored as malic acid The Calvin cycle takes place in bundle sheath cells CO2 fixation occurs exclusively during the day 5. 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 6. ————– is a primary factor in plant identification Root depth Flower color Plant height Leaf shape and arrangement 7. What is the overall chemical equation of photosynthesis, which occurs in the chloroplasts of plant cells? Oxygen + Glucose → Water + Carbon dioxide Light energy → Mechanical energy Light energy → Thermal energy Water + Carbon dioxide → Glucose + Oxygen 8. Which pigment is directly involved in absorbing light energy for photosynthesis? Xanthophyll Carotene Anthocyanin Chlorophyll a 9. What is the primary function of the root cap? To facilitate gas exchange in the root To protect the apical meristem and aid in root penetration To absorb water and minerals from the soil To store carbohydrates for plant growth 10. In which part of a flower does fertilization occur? Style Anther Ovary Stigma Loading …
