This quiz works best with JavaScript enabled. Home > Science > Biology > Biology – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biology Quiz 24 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In human excretion system, the nitrogenous waste produced in the form of A) Ammonia. B) Uric acid. C) Urea. D) Fecal matter. Show Answer Correct Answer: C) Urea. 2. Many of the events of mitosis depend on mitotic spindle fibers which begin to form in the ..... during prophase A) Nucleus. B) Cytoplasm. C) Cell membrane. D) None of above. Show Answer Correct Answer: B) Cytoplasm. 3. Global warming can lead to A) Deforestation. B) Climate change. C) Oil spills. D) Litter. Show Answer Correct Answer: B) Climate change. 4. Classification of living things and extinct organisms A) Ecology. B) Palaeontology. C) Taxonomy. D) Morphology. Show Answer Correct Answer: C) Taxonomy. 5. What controls the flowering process in long-day plants? A) Pfr is converted by red light to Pr which acts as a promoter of flowering. B) Pr is converted by red light to Pfr which acts as an inhibitor of flowering. C) Pr is converted by red light to Pfr which acts as a promoter of flowering. D) Pfr is converted by red light to Pr which acts as an inhibitor of flowering. Show Answer Correct Answer: C) Pr is converted by red light to Pfr which acts as a promoter of flowering. 6. When conditions are right seeds start growing to form a new plant.What is this process called? A) Fertilisation. B) Germination. C) Nutrition. D) Pollination. Show Answer Correct Answer: B) Germination. 7. The edge of the leaf blade is called ..... ' A) Midrib. B) Margin. C) Petiole. D) Leaf base. Show Answer Correct Answer: B) Margin. 8. What type of "square" helps us solve genetic problems? A) Carpenter square. B) Mendel square. C) Punnett square. D) Genetic square. Show Answer Correct Answer: C) Punnett square. 9. The scientific name of a "black flying fox" bat is Pteropus alecto. What genus does the bat belong to? A) Bat genus. B) Alecto. C) Species. D) Pteropus. Show Answer Correct Answer: D) Pteropus. 10. The Venus flytrap is a plant that feeds on insects. When a fly lands on the leaf, the leaf folds very quickly and traps the fly. The leaves produce enzymes which digest the fly. Which characteristics of living organisms are involved? A) Excretion, growth, nutrition. B) Movement, excretion, nutrition. C) Movement, sensitivity, growth. D) Movement, sensitivity, nutrition. Show Answer Correct Answer: D) Movement, sensitivity, nutrition. 11. What was the result of the Miller-Urey Experiment? A) Amino acids. B) Nucleotides. C) Lipids. D) Glucose. Show Answer Correct Answer: A) Amino acids. 12. Prosthetic groups are A) Required by all enzymes. B) Loosely attached. C) Proteins in nature. D) Tightly bound. Show Answer Correct Answer: D) Tightly bound. 13. Veins have valves to A) Prevent the veins from collapse. B) Prevent the back flow of blood. C) Restrict blood flow. D) None of above. Show Answer Correct Answer: B) Prevent the back flow of blood. 14. Which type of cell is bigger? A) Prokaryotic. B) Eukaryotic. C) Virus. D) Bacteriophage. Show Answer Correct Answer: B) Eukaryotic. 15. Which of the following are effects of auxin? I. Increasing the rate of cell elongation in stemsII. Changing the pattern of gene expression in shoot cellsIII. Detecting the direction of light A) I and II only. B) I and III only. C) II and III only. D) I, II and III. Show Answer Correct Answer: A) I and II only. 16. What process best explains how a nerve cell and a muscle cell can both develop from the same fertilized egg? A) Differentiation. B) Natural selection. C) Selective breeding. D) Genetic engineering. Show Answer Correct Answer: A) Differentiation. 17. Which process produces the most variation within a species? A) Asexual reproduction. B) Sexual reproduction. C) Mitosis. D) Cloning. Show Answer Correct Answer: B) Sexual reproduction. 18. The site of photosynthesis A) Ribosome. B) Mitochondria. C) Chloroplast. D) Nucleus. Show Answer Correct Answer: C) Chloroplast. 19. When numerous food chains link to each other in an ecosystem, it is called a(n) A) Food chain. B) Food web. C) Trophic pyramid. D) Food cluster. Show Answer Correct Answer: B) Food web. 20. Hydrophilic means ..... A) Water-loving. B) Water-fearing. C) Nonpolar. D) Lipid soluble. Show Answer Correct Answer: A) Water-loving. ← PreviousNext →Related QuizzesScience QuizzesBiology Quiz 1Biology Quiz 2Biology Quiz 3Biology Quiz 4Biology Quiz 5Biology Quiz 6Biology Quiz 7Biology Quiz 8Biology Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books