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 CAM plants rely on a different enzyme for CO2 fixation The Calvin cycle takes place in bundle sheath cells The CO2 is fixed at night and stored as malic acid 2. In which part of a flower does fertilization occur? Anther Ovary Style Stigma 3. In a hypotonic solution, cells experience ———- Exosmosis No change Endosmosis Active transport 4. What is the primary function of the root cap? To protect the apical meristem and aid in root penetration To absorb water and minerals from the soil To store carbohydrates for plant growth To facilitate gas exchange in the root 5. Which pigment is directly involved in absorbing light energy for photosynthesis? Carotene Xanthophyll Chlorophyll a Anthocyanin 6. What is the primary component of the phloem tissue responsible for transporting organic compounds, such as sugars and amino acids? Guard cells Xylem vessels Sieve tubes Tracheids 7. ————– is a primary factor in plant identification Flower color Plant height Root depth Leaf shape and arrangement 8. 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 9. Agar is a jelly-like structure, and which group of algae is commercially obtained from? Blue-green algae Brown algae Red algae Green algae 10. Where does the Calvin cycle (light-independent stage of photosynthesis) occur? Cytoplast Vacuole Chloroplast stroma Mitochondria Loading …
