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