This quiz works best with JavaScript enabled. Home > Science > Biology > Biology – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biology Quiz 3 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are the cells that make up Phloem? A) Spiracles. B) Sieve Tube Cells. C) Vessel Cells. D) Tracheary Elements. Show Answer Correct Answer: B) Sieve Tube Cells. 2. All the organisms that live and interact in an ecosystem A) Population. B) Community. C) Habitat. D) Interdependent. Show Answer Correct Answer: B) Community. 3. A relationship in which two organisms are mutually dependent on each other to survive. A) Mutualism. B) Commensalism. C) Parasitism. D) Interdependent Relationship. Show Answer Correct Answer: D) Interdependent Relationship. 4. It is the study of morphological, organizational, biochemical, physiological, genetic, developmental, pathological and evolutionary aspects of cell and its components. A) Cell biology. B) Histology. C) Physiology. D) Ecology. Show Answer Correct Answer: A) Cell biology. 5. ..... are the smallest blood vessels. A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 6. In which stage in meiosis is the chromosome number reduced from diploid to haploid? A) During pairing of chromosomes in the first division of meiosis. B) During pairing of chromosomes in the second division of meiosis. C) When chromosomes move to opposite ends of the cell during the first division of meiosis. D) When chromosomes move to opposite ends of the cell during the second division of meiosis. Show Answer Correct Answer: D) When chromosomes move to opposite ends of the cell during the second division of meiosis. 7. It was originally estimated by scientists that the carrying capacity of humans on Earth was approximately 1 billion people. The population of Earth is now OVER 7 billion people. What is the best EXPLANATION for this? A) Humans have greatly exceeded their carrying capacity. B) Humans now consume less resources than they did previously. C) Humans have become more efficient in producing and replenishing food resources. D) The Earth has continued to grow at the same rate as the human population. Show Answer Correct Answer: C) Humans have become more efficient in producing and replenishing food resources. 8. It is the study of internal structure which can be observed with unaided eye after dissection. A) Morphology. B) Embryology. C) Anatomy. D) Physiology. Show Answer Correct Answer: C) Anatomy. 9. Use the ..... focuses the image under low power. A) Revolving nosepiece. B) Fine adjustment knob. C) Coarse adjustment knob. D) Arm/neck. Show Answer Correct Answer: C) Coarse adjustment knob. 10. What is the name for the structures that allow flow of material between phloem cells? A) Cellulose. B) Sieve plate. C) Sieve cell. D) Trachieds. Show Answer Correct Answer: B) Sieve plate. 11. Cells are measured in what unit? A) Millimeters. B) Micrometers. C) Centimeters. D) Inches. Show Answer Correct Answer: B) Micrometers. 12. The males of a bird species do a "dance" and "sing a song" each spring. What is the main purpose of these behaviors? A) To scare off young birds. B) To imprint young birds. C) To clean their feathers. D) To attract female birds. Show Answer Correct Answer: D) To attract female birds. 13. The enzyme that helps in digestion of carbohydrates is A) Pepsin. B) Renin. C) Lipase. D) Amylase. Show Answer Correct Answer: D) Amylase. 14. What are Annelids? A) Organisms without septa. B) Segmented organisms. C) Small vertebrates. D) A type of amphibian. Show Answer Correct Answer: B) Segmented organisms. 15. Which micronutrient can cause toxicity if too much is found in a plant? A) Chlorine (Cl). B) Boron (B). C) Zinc (Zn). D) Iron (Fe). Show Answer Correct Answer: A) Chlorine (Cl). 16. All fish, all birds, all mammals are ..... A) Animals with internal fertilization. B) Carnivores. C) Vertebrates. D) Warm blooded animals. Show Answer Correct Answer: C) Vertebrates. 17. Which of the following plant cells has an oblong shape? A) Epidermal cell. B) Companion cell. C) Palisade cell. D) Root hair cell. Show Answer Correct Answer: C) Palisade cell. 18. If worldwide deforestation is not regulated, what could most likely result? A) Acid rain could lower the pH of rivers and lakes to dangerous levels for aquatic life. B) CO2 levels in the atmosphere could increase and contribute to global warming problems. C) Plants and animals could become better adapted to living in desert conditions. D) Future generations of humans could have an excess of wood and paper products. Show Answer Correct Answer: B) CO2 levels in the atmosphere could increase and contribute to global warming problems. 19. Which is the only structure you would expect to see when examining a prokaryotic cell with a compound light microscope? A) Nucleus. B) Chloroplast. C) Cell membrane. D) Mitochondria. Show Answer Correct Answer: C) Cell membrane. 20. Heart is made up of A) Cardiac muscle. B) Smooth muscle. C) Skeletal muscle. D) None of above. Show Answer Correct Answer: A) Cardiac muscle. ← PreviousNext →Related QuizzesScience QuizzesBiology Quiz 1Biology Quiz 2Biology Quiz 4Biology Quiz 5Biology Quiz 6Biology Quiz 7Biology Quiz 8Biology Quiz 9Biology Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books