MCQs Biology-30 Posted on December 10, 2025December 10, 2025Author agropublishers 0 Table of Contents Toggle MCQs Biology-30Multiple Choice QuestionsMCQs Biology-30 MCQs Biology-30 Multiple Choice Questions 1. Tapeworms and Plasmodium are examples of __________ organisms Absorptive heterotrophs Completely parasitic Photosynthetic Chemosynthetic 2. Considering their trophic mode, fungi are classified as ___________? Chemoautotrophs Completely parasitic Photoautotrophs Absorptive heterotrophs 3. Plant dispersal limitation occurs when _______ Temperature is optimal for growth Abundant water, causing seed rot Soil pH is too low for germination Seeds are unable to reach suitable habitats due to geographical barriers 4. Which factor is primarily responsible for the large-scale distribution of plants on Earth? Climate Seed size Herbivory Soil pH 5. In the stomach, mucus serves primarily to ———– Neutralize acid Activate pepsin Enhance protein digestion Protect the mucosa from self-digestion 6. Evolutionary history of plants affects their distribution because___________ All plants can survive in any climate Evolution eliminates climatic influence Plant species adapt to specific ecological niches over time Soil is uniform worldwide 7. Chitin is an example of ———– Monosaccharide Disaccharide Lipid Polysaccharide 8. Trypsin is secreted by which organ? Salivary glands Stomach Liver Pancreas 9. Sucrose is a ———— Lipid Polysaccharide Disaccharide Monosaccharide 10. Which group of bacteria requires a low-oxygen environment (typically 2-10%) for optimum growth and is inhibited by higher atmospheric oxygen concentration (â21%)? Aerobic bacteria Anaerobic bacteria Facultative bacteria Microaerophilic bacteria Loading … Question 1 of 10 MCQs Biology-30