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 Green algae Brown algae Red algae 2. Where does the Calvin cycle (light-independent stage of photosynthesis) occur? Mitochondria Vacuole Chloroplast stroma Cytoplast 3. In a hypotonic solution, cells experience ———- Endosmosis Active transport Exosmosis No change 4. In which part of a flower does fertilization occur? Stigma Ovary Style Anther 5. 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 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 6. What is the primary component of the phloem tissue responsible for transporting organic compounds, such as sugars and amino acids? Sieve tubes Tracheids Guard cells Xylem vessels 7. What is the primary function of the root cap? To absorb water and minerals from the soil To store carbohydrates for plant growth To facilitate gas exchange in the root To protect the apical meristem and aid in root penetration 8. Which pigment is directly involved in absorbing light energy for photosynthesis? Anthocyanin Xanthophyll Carotene Chlorophyll a 9. What is the overall chemical equation of photosynthesis, which occurs in the chloroplasts of plant cells? Light energy → Mechanical energy Oxygen + Glucose → Water + Carbon dioxide Light energy → Thermal energy Water + Carbon dioxide → Glucose + Oxygen 10. ————– is a primary factor in plant identification Root depth Leaf shape and arrangement Plant height Flower color Loading …
