This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Biology – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biology Quiz 18 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In translocation, what directly causes a high hydrostatic pressure at the source? A) Sucrose enters the phloem by active transport. B) Water enters the roots by osmosis. C) Sucrose leaves the roots by active transport. D) Water enters the phloem by osmosis. Show Answer Correct Answer: D) Water enters the phloem by osmosis. 2. Which structure is not a component of all cells? A) Cell wall. B) Cell membrane. C) Genetic material. D) Ribosomes. Show Answer Correct Answer: A) Cell wall. 3. In ....., we study heredity of traits. A) Zoology. B) Botany. C) Biology. D) Genetics. Show Answer Correct Answer: D) Genetics. 4. Living things are made up of units called A) Homeostasis. B) Cells. C) DNA. D) Seeds. Show Answer Correct Answer: B) Cells. 5. The leaf is known as the ..... A) Photogenic organ. B) Photosynthetic organ. C) Photographic organ. D) None of above. Show Answer Correct Answer: B) Photosynthetic organ. 6. Which is one reason scientists produce transgenic organisms? A) To treat certain types of diseases. B) To prevent habitats from being destroyed. C) To create new species of organisms. D) To control microorganisms in the soil. Show Answer Correct Answer: A) To treat certain types of diseases. 7. What is the study of fossil plants? A) Paleobotany. B) Biology. C) Mammalogy. D) Taxonomy. Show Answer Correct Answer: A) Paleobotany. 8. In a cell the energy is stored in A) Ribosomes. B) Nucleus. C) Plastid. D) Mitochondria. Show Answer Correct Answer: D) Mitochondria. 9. Organisms must have a stable environment. A) Energy Use. B) Homeostasis. C) Reproduction. D) Growth. Show Answer Correct Answer: B) Homeostasis. 10. Which of the following is an adaptation of a xerophyte? A) Reduced roots. B) Many stomata. C) Hairy leaves. D) Thin cuticle. Show Answer Correct Answer: C) Hairy leaves. 11. Which animal cell is adapted for its function by having a long axon? A) Nerve cell. B) Ciliated cell. C) White blood cell. D) Sperm cell. Show Answer Correct Answer: A) Nerve cell. 12. When do Poinsettas flower? A) In the summer when days are long and Pfr is high. B) In the winter when days are short and Pfr is high. C) In the winter when days are short and Pfr is low. D) In the winter when days are long and Pfr is high. Show Answer Correct Answer: C) In the winter when days are short and Pfr is low. 13. The variable that is manipulated in an experiment is called the ..... variable A) Dependnt. B) Control. C) Independent. D) Mystery. Show Answer Correct Answer: C) Independent. 14. Protein Synthesis takes place at what organelle? A) Mitochondria. B) Nucleus. C) Ribosome. D) Chloroplast. Show Answer Correct Answer: C) Ribosome. 15. Ribosomes are the cell organelle that A) Produce proteins for the cell. B) Break down food to produce energy for the cell. C) Make food for the cell using the sun's energy. D) Break down broken cell parts. Show Answer Correct Answer: A) Produce proteins for the cell. 16. Protein containing iron is known as A) Haemoglobin. B) Fibrinogen. C) Globulin. D) Hormone. Show Answer Correct Answer: A) Haemoglobin. 17. Which of the following are true of the shoot meristem? I. cells at the edge stop dividing and instead differentiateII. mitosis occursIII. it contains undifferentiated cells A) I and II only. B) I and III only. C) II and III only. D) I, II and III. Show Answer Correct Answer: D) I, II and III. 18. A ..... is a group of organisms that can reproduce fertile offspring. Failure to reproduce fertile offspring will cause ..... of the group. A) Species, extinction. B) Phylum, extinction. C) Species, evolution. D) Genus, evolution. Show Answer Correct Answer: A) Species, extinction. 19. Describes the arrangement of the cell membrane as bendable and made of many parts. A) The Major Mobility Model. B) The Crazy Cell Model. C) The Fluid Mosaic Model. D) The Maze Model. Show Answer Correct Answer: C) The Fluid Mosaic Model. 20. Which domain contains organisms that are unicellular, prokaryotic, and can cause illness yet also make food such as yogurt. A) Eukarya. B) Archaea. C) Bacteria. D) None of above. Show Answer Correct Answer: C) Bacteria. 21. A(n) ..... is a pure substance made of a single type of atom and cannot be broken down. A) Mixture. B) Molecule. C) Compound. D) Element. Show Answer Correct Answer: D) Element. 22. Which adaptation is correct for a rabbit? A) Good hearing to detect predators. B) Large feet to help walk on snow. C) Long deep roots to absorb water from soil. D) Sharp claws and teeth for killing prey. Show Answer Correct Answer: A) Good hearing to detect predators. 23. Where does anaerobic respiration take place? A) Nucleus. B) Chloroplast. C) Cytoplasm. D) Mitochondria. E) Golgi bodies. Show Answer Correct Answer: C) Cytoplasm. 24. The solubility of gases increases as the temperature what? A) Increases. B) Alter state. C) Stays the same. D) Decreases. Show Answer Correct Answer: D) Decreases. 25. An animal that is hunted and killed for food by a predator ..... A) Parasite. B) Predator. C) Prey. D) Predation. Show Answer Correct Answer: C) Prey. 26. Which organelle is only found in a plant cell? A) Chloroplast. B) Nucleus. C) Cell membrane. D) Mitochondria. Show Answer Correct Answer: A) Chloroplast. 27. What is the function of chloroplasts? A) Eats large bugs. B) Captures energy from the sun and uses it to produce food. C) Stays happy. D) Uses water to help plants grow. Show Answer Correct Answer: B) Captures energy from the sun and uses it to produce food. 28. Include waxes, oils, steroids (hormones) A) Nucleic Acids. B) Proteins. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: D) Lipids. 29. What does protein synthesis DO? A) Makes genes. B) Deletes cells. C) Makes proteins. D) Makes new cells. Show Answer Correct Answer: C) Makes proteins. 30. ..... separate the left part of the heart from the right part of the heart to prevent mixture of oxygenated and deoxygenated blood. A) Semilunar valve. B) Right atrium. C) Right ventricle. D) Septum. Show Answer Correct Answer: D) Septum. 31. What could be used in a technique for measuring flow rates in phloem? I. PotometersII. Aphid styletsIII. 14CO2 A) I and II. B) I and III. C) II only. D) II and III only. Show Answer Correct Answer: D) II and III only. 32. A common symptom of a plant that has a phosphorus deficiency is: A) A purplish color in older leaves. B) Rotting fruit on young plants. C) Yellow leaves with green veins. D) Cupped or curled leaf tips. Show Answer Correct Answer: A) A purplish color in older leaves. 33. A(n) ..... is a procedure performed in a controlled setting to test a hypothesis and collect precise date. A) Theory. B) Constant. C) Experiment. D) None of above. Show Answer Correct Answer: C) Experiment. 34. Molds, yeast, and mushroom belong to kingdom: A) Fungi. B) Archaebacteria. C) Protista. D) Eubacteria. Show Answer Correct Answer: A) Fungi. 35. Which of the following is NOT part of the cell membrane? A) Lipids. B) Proteins. C) Nucleic Acids. D) Carbohydrates. Show Answer Correct Answer: C) Nucleic Acids. 36. What does it mean that water communities are high in biodiversity? A) That there are lots of different types of life. B) That there are many different types of water. C) That there are lots of different types of bacteria. D) That there are lots of changes. Show Answer Correct Answer: A) That there are lots of different types of life. 37. Which is not a phase of the cell cycle? A) Mitosis. B) Cytokinesis. C) Duplication. D) Interphase. Show Answer Correct Answer: C) Duplication. 38. What are the building blocks of matter in our universe? A) Protons. B) Neutrons. C) Atoms. D) Cells. Show Answer Correct Answer: C) Atoms. 39. The first step in the scientific method is ..... A) Define a problem. B) Form a hypothesis. C) Make observations. D) To gather additional information. Show Answer Correct Answer: A) Define a problem. 40. Can cause burning of the skin A) Particle matter. B) Lead. C) Nitrogen oxides. D) Sulfur dioxide. Show Answer Correct Answer: D) Sulfur dioxide. 41. The formation of a new species is called A) Darwinism. B) Natural selection. C) Speciation. D) Struggle for existence. Show Answer Correct Answer: C) Speciation. 42. What is the function of the cell nucleus found in both plant and animal cells? A) To produce energy. B) To control cell activity. C) To remove waste products. D) To allow molecules to enter the cell. Show Answer Correct Answer: B) To control cell activity. 43. Which is not true about carbohydrates? A) They contain oxygen and hydrogen in a 1:2 ratio. B) They contain carbon, oxygen, and hydrogen. C) They have hydroxyl groups. D) They have carboxyl groups. Show Answer Correct Answer: D) They have carboxyl groups. 44. The 'lub' sound produced after A) Semilunar valves close. B) Atria are fully contracted. C) Ventricles start to relax. D) Bicuspid valve and tricuspid valve suddenly close. Show Answer Correct Answer: D) Bicuspid valve and tricuspid valve suddenly close. 45. Plants get energy from the sun while animals get energy from A) Sleeping. B) Eating food. C) Photosynthesis. D) Condensation. Show Answer Correct Answer: B) Eating food. 46. The molecular sequence, or blueprint for a protein, is originally carried by which molecule? A) ATP. B) DNA. C) TRNA. D) RRNA. Show Answer Correct Answer: B) DNA. 47. Many snakes that belong to the viper family are unusual in that they give birth to live young. This is usually a characteristic of which vertebrate group? A) Amphibians. B) Mammals. C) Bony fish. D) Birds. Show Answer Correct Answer: B) Mammals. 48. The biotic and abiotic factors that work together in an area A) Community. B) Organism. C) Ecosystem. D) Population. Show Answer Correct Answer: C) Ecosystem. 49. What is the correct order for gram staining A) Crystal violet, iodine, safranin, wash with ethanol. B) Safranin, crystal violet, wash with ethanol, iodine. C) Crystal violet, iodine, wash with ethanol, safranin. D) Iodine, crystal violet, wash with ethanol, safranin. Show Answer Correct Answer: C) Crystal violet, iodine, wash with ethanol, safranin. 50. The division of the cytoplasm. In animal cells a cleavage furrow appears. In plant cells, a cell plate forms. What phase is this? A) Telophase. B) Prophase. C) Cytokinesis. D) Anaphase. Show Answer Correct Answer: C) Cytokinesis. 51. The ..... represent the male gametophyte A) Stamen. B) Anther. C) Pollen sac. D) Pollen grains. Show Answer Correct Answer: D) Pollen grains. 52. What is a consumer? A) A plant that eats another plant. B) A plant that is eaten by an animal. C) An animal that eats a plant. D) A plant that eats plants and animals. Show Answer Correct Answer: C) An animal that eats a plant. 53. The end product of photosynthesis is A) Carbon dioxide. B) Oxygen. C) Glucose. D) Both b & c. Show Answer Correct Answer: D) Both b & c. 54. Which of the following is/are involved in explaining how auxin causes cell elongation? I. an increase in pH breaks hydrogen bonds between cellulose fibresII. auxin activates specific genesIII. a protein pump transports protons from the cell wall to the cytoplasm A) I and II only. B) II only. C) I, II and II. D) II and III only. Show Answer Correct Answer: B) II only. 55. The trophic structure of an ecosystem can be summarized in the form of a(n) A) Ecological pyramid. B) Climax schematic. C) Trophic level chart. D) Energy network. Show Answer Correct Answer: A) Ecological pyramid. 56. Why is meiosis important for sexual reproduction? A) It allows the zygote formed from fertilization to have triple the chromosome number of the organism. B) It allows gametes to have twice the original number of chromosomes of the organism. C) It allows gametes to have half the original number of chromosomes of the organism. D) It allows the zygote formed from fertilization to have half the original number of chromosomes of the organism. Show Answer Correct Answer: C) It allows gametes to have half the original number of chromosomes of the organism. 57. This is the study of interactions between organisms and the interactions that organisms have with their environment. A) Evolution. B) Biology. C) Commensalism. D) Ecology. Show Answer Correct Answer: D) Ecology. 58. Decomposers break down detritus, also known as ..... A) Inorganic matter. B) Living matter. C) Dead organic matter. D) Non-living matter. Show Answer Correct Answer: C) Dead organic matter. 59. Which of the following organisms are LEAST closely related? A) Organisms that share a species. B) Organisms that share a genus. C) Organisms that share a family. D) Organisms that share a domain. Show Answer Correct Answer: D) Organisms that share a domain. 60. Which molecules do not have charged regions? A) Water. B) Polar. C) Non-poar. D) Hydro. Show Answer Correct Answer: C) Non-poar. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesBiology Quiz 1Biology Quiz 2Biology Quiz 3Biology Quiz 4Biology Quiz 5Biology Quiz 6Biology Quiz 7Biology Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books