This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 1 The Living World – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 1 The Living World Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 97% of the water on earth exists as A) Saltwater. B) Lakes and Rivers. C) Groundwater. D) Water Vapor. Show Answer Correct Answer: A) Saltwater. 2. Nitrogen compounds are converted back into atmospheric N$_{2}$ by bacteria and burning of fossil fuels through this process A) Nitrogen fixation. B) Ammonification. C) Nitrification. D) Dentrification. Show Answer Correct Answer: D) Dentrification. 3. This relationship involves one species benefitting while harming the other one negatively A) Mutualism. B) Commensalism. C) Parasitism. D) Symbiosis. Show Answer Correct Answer: C) Parasitism. 4. A group of closely related genera is called a A) Family. B) Species. C) Genera. D) Kingdom. Show Answer Correct Answer: A) Family. 5. Why does photosynthesis not occur in the deep ocean? A) Lack of nutrients. B) Low oxygen levels. C) Excess sunlight. D) Sunlight does not penetrate. Show Answer Correct Answer: D) Sunlight does not penetrate. 6. What is permafrost? A) When the ground freezes for most of the year. B) When the ground is frozen all year. C) When the ground has a frost. D) When the ground thaws and then refreezes. Show Answer Correct Answer: B) When the ground is frozen all year. 7. Which set of organisms multiply by fragmentation? A) Earthworm, Amoeba, fungi(b). B) Earthworm, fungi, bacteria. C) Fungi, filamentous algae, protonema of mosses. D) Amoeba, Hydra, bacteria. Show Answer Correct Answer: C) Fungi, filamentous algae, protonema of mosses. 8. Two friends are eating together on a diningtable. One of them suddenly starts coughingwhile swallowin some food. This coughingwould have been due to improper movementof A) Tongue. B) Epiglottis. C) Diaphragm. D) Neck. Show Answer Correct Answer: B) Epiglottis. 9. The biome with the largest reservoir of nitrogen in the soil is: A) Temperate forests. B) Savana. C) Taiga. D) Tropical Rainforests. Show Answer Correct Answer: A) Temperate forests. 10. What is a change brought about by a physical, chemical, or biological agent that impacts population size or community structure? A) Resistance. B) Stability. C) Disturbance. D) Resilience. Show Answer Correct Answer: C) Disturbance. 11. Bottleneck effect A) The number and relative abundance of species in a biological community. B) A design in which researchers manipulate an independent variable and measure a dependent variable to determine a cause-and-effect relationship. C) A reduction in the genetic diversity of a population caused by a reduction in its size. D) Information describing color, odor, shape, or some other physical characteristic. Show Answer Correct Answer: C) A reduction in the genetic diversity of a population caused by a reduction in its size. 12. Eutrophication is caused by A) Runoff of excessive fertilizer and nutrients. B) Using nuclear energy. C) Cleaning up waterways. D) Using solar energy. Show Answer Correct Answer: A) Runoff of excessive fertilizer and nutrients. 13. Two closely related species of birds live in the same tree. Species A feeds on ants and termites, while Species B feeds on caterpillars. The two species coexist successfully because A) Each occupies a different niche. B) They interbreed. C) They use different methods of reproduction. D) Birds compete for food. Show Answer Correct Answer: A) Each occupies a different niche. 14. The tropical savanna & temperate grassland are both types of grasslands. What differentiates them is the fact that A) The savanna is hotter. B) The savanna is cooler. C) The grassland is hotter. D) The grassland receives much more precipitation. Show Answer Correct Answer: A) The savanna is hotter. 15. Systematics is:- A) Characterization, identification, nomenclature, classification and evolutionary history also. B) Characterization, identification, nomenclature and classification. C) Nomenclature, classification and evolutionary history also. D) Characterization, identification, nomenclature. Show Answer Correct Answer: A) Characterization, identification, nomenclature, classification and evolutionary history also. 16. Which feature is NOT used to group animals? A) The food they eat. B) The place they live. C) The way they move. D) The color of their eyes. Show Answer Correct Answer: D) The color of their eyes. 17. When humans EXHALE, we release ..... A) Oxygen. B) Carbon Dioxide. C) Nitrogen. D) Water. Show Answer Correct Answer: B) Carbon Dioxide. 18. Organisms have the ability to grow in extreme conditions like volcano vents, hot springs and polar ice caps are called ..... A) Methanogens. B) Halophiles. C) Pathogens. D) Thermophiles. Show Answer Correct Answer: D) Thermophiles. 19. Corvus splendens splendens is the scientific name of Indian crow, it represents A) Binomial nomenclature. B) Autonyms. C) Tautonyms. D) Synonyms. Show Answer Correct Answer: B) Autonyms. 20. Ecosystems never change. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 21. What do you call it when one species benefits AND the other species benefits? A) Predation. B) Parasitism. C) Commensalism. D) Mutualism. Show Answer Correct Answer: D) Mutualism. 22. What % of the air is made of nitrogen? A) 21%. B) 52%. C) 61%. D) 78%. Show Answer Correct Answer: D) 78%. 23. A system formed by the interaction of a community of organisms with their physical environment A) Ecosystem. B) Population. C) Ecological hierarchy. D) Ecosystem service. Show Answer Correct Answer: A) Ecosystem. 24. Who was Janaki Ammal? A) Botanist. B) Physicist. C) Chemist. D) None of the above. Show Answer Correct Answer: A) Botanist. 25. By treating bacteria with radiation or drugs, they can create a ..... mutant/bacterial strain. A) Useful. B) Atrocious. C) Detrimental. D) Gregarious. Show Answer Correct Answer: A) Useful. ← PreviousNext →Related QuizzesClass 11 Biology Chapter 1 The Living World Quiz 1Class 11 Biology Chapter 1 The Living World Quiz 2Class 11 Biology Chapter 1 The Living World Quiz 3Class 11 Biology Chapter 1 The Living World Quiz 4Class 11 Biology Chapter 1 The Living World Quiz 5Class 11 Biology Chapter 1 The Living World Quiz 6Class 11 Biology Chapter 1 The Living World Quiz 7Class 11 Biology Chapter 1 The Living World Quiz 8Class 11 Biology Chapter 1 The Living World Quiz 9Class 11 Biology Chapter 1 The Living World Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books