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