This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 118 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 118 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... is the study of the relationship between organisms and thier environment. A) Ecosystem. B) Food chain. C) Ecology. D) Healthy. Show Answer Correct Answer: C) Ecology. 2. The continous sequence of natural processes by which nitrogen in the atmosphere and nitrogenous compounds in the soil are converted ..... A) Sulphur cycle. B) Carbon cycle. C) Water cycle. D) Nitrogen cycle. Show Answer Correct Answer: D) Nitrogen cycle. 3. Prairies and savannas are two examples of this land biome? A) Tundra. B) Grassland. C) Desert. D) Taiga. Show Answer Correct Answer: B) Grassland. 4. Why are organisms so well adapted to the biome in which they live? A) They have migrated to that biome. B) They have slowly evolved to adapt to their environment. C) They have quickly changed their biological make up to suit their environments. D) They have killed off other, better-adapted species. Show Answer Correct Answer: B) They have slowly evolved to adapt to their environment. 5. A place where several groups of different animals live together with their nonliving factors is called a(n) ..... A) Species. B) Ecosystem. C) Population. D) Community. Show Answer Correct Answer: B) Ecosystem. 6. The roots of some plant species have a special coating to help resist rotting in extremely wet weather. In which environment is it most beneficial for plants to have rot-resistant roots? A) Taiga. B) Temperate Deciduous Forest. C) Tropical Rainforest. D) Desert. Show Answer Correct Answer: C) Tropical Rainforest. 7. In ecology, what is population density? A) The number of abiotic factors in an area. B) The amount of producers in one area. C) The number of organisms living in an area. D) None of above. Show Answer Correct Answer: C) The number of organisms living in an area. 8. Shows a complex network of feeding relationships A) Food chain. B) Community. C) Food web. D) Population. Show Answer Correct Answer: C) Food web. 9. Prefix "auto-" A) Living. B) With help. C) Self. D) Together. Show Answer Correct Answer: C) Self. 10. What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds? A) Nitrogen composition. B) Ammonia. C) Nitrogen fixation. D) Denitrification. Show Answer Correct Answer: C) Nitrogen fixation. 11. One individual within a species A) Organism. B) Population. C) Community. D) Ecosystem. Show Answer Correct Answer: A) Organism. 12. Releases more CO2, increasing greenhouse gases which could lead to climate change. A) Fertilizer runoff. B) Pesticides. C) Burning fossil fuels. D) Beach erosion. Show Answer Correct Answer: C) Burning fossil fuels. 13. The study of interactions that take place between organisms and their environment. A) Microbiology. B) Histology. C) Ecosystem. D) Ecology. Show Answer Correct Answer: D) Ecology. 14. A group of giraffes living in one area are apart of a A) Biosphere. B) Biome. C) Population. D) Community. Show Answer Correct Answer: C) Population. 15. Which animal (s) would a desert have living in it? A) Zebra. B) Flamingo. C) Scorpion. D) Leopard gecko. Show Answer Correct Answer: D) Leopard gecko. 16. A relationship where both species benefit is called ..... A) Symbiosis. B) Mutualism. C) Commensalism. D) Parasitism. Show Answer Correct Answer: B) Mutualism. 17. A disease resulting in the deaths of one-third of a dense population of bats in a cave would likely be a A) Density-dependent factor. B) Result of exponential growth. C) Density-independent factor. D) Nutrient limiting factor. Show Answer Correct Answer: A) Density-dependent factor. 18. Bees get nectar and pollen from flowers for food, and they spread pollen from flower to flower to create more plants. This is an example of: A) Decomposition. B) Commensalism. C) Mutualism. D) Parasitism. Show Answer Correct Answer: C) Mutualism. 19. Which of the following is the correct order of organization in living things from most basic (simple) to most complex? A) Organism, cell, tissue, organ, organ system. B) Cell, tissue, organ, organ system, organism. C) Organ system, organ, tissue, cell, organism. D) Cell, organ, tissue, organ, organism, organ system. Show Answer Correct Answer: B) Cell, tissue, organ, organ system, organism. 20. What type of relationship occurs when two species fight over limited resources? A) Mutualism. B) Competition. C) Predation. D) Commensalism. Show Answer Correct Answer: B) Competition. ← PreviousNext →Related QuizzesEcology Quiz 1Ecology Quiz 2Ecology Quiz 3Ecology Quiz 4Ecology Quiz 5Ecology Quiz 6Ecology Quiz 7Ecology Quiz 8Ecology Quiz 9Ecology Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books