Class 10th Biology Chapter 16 Man and his Environment MCQs Short Long Notes

biology 10th notes Chapter 16

1. A __________ is a network of food chains which are interconnected at various trophic levels.


2. Lion is a


3. A termite with a protozoa in its gut is an example of


4. Biotic components include


5. The breakdown of the proteins of dead organisms and nitrogenous wastes to ammonia is called


6. In _________, one organism attacks, kills and feeds on the other organism


7. The first trophic level is made of


8. Ascaris is


9. In this type of symbiotic interaction, both partners get benefit and neither is harmed


10. It is a relationship between members of different species, in which they live together for longer or shorter periods of time


11. Which of the following is a decomposer?


12. The biosphere is about _______ thick


13. The self sufficient unit of an environment that is formed as a result of interactions between abiotic and biotic components is known as


14. Which of the following is carnivorous plant?


15. The organisms of ‘a population living in a habitat and interact with one another collectively called:  


16. A __________ is a series of organisms within an ecosystem, in which each organism feeds on the one before it and is fed by the one after it


17. _____________ contain carbon.


18. The biological process in which nitrogen is returned to atmosphere is known as


19. A group of organisms of a same species living in a particular area is called


20. ln the food chain “grass   —> rabbit –> fox —> bear —> mushroom”, how many types of the decomposers are present?  


21. Hawk is a


22. All ecosystems of the world together form the:   


23. Which of the following is a primary carnivore?


24. Which of the following is a primary consumer?


25. All the populations that live in a habitat and interact in various ways with on another are collectively called


26. The base of a food chain is always formed by


27. Epiphytes show ___________ relationship with larger plants


28. The major process that brings carbon from atmosphere or water into living world is


29. ___________ is found as graphite and diamond in nature


30. It is a type of symbiosis in which one partner is benefited while the other is neither benefited nor harmed


31. Excessive ___________ reduces soil fertility


32. Owl is a


33. In atmospheric nitrogen fixation nitrates are produced by


34. Which of the following set is correct about natural ecosystems‘?


35. They are also called top carnivores


36. All carnivore animals are


37. Which of the following is an omnivore?


38. ____________ is an important component of proteins and nucleic acids (DNA and RNA).


39. Example of natural ecosystem is:  


40. Goat and rabbit are


41. The absorption of nitrates by plants is known as


42. A _________ is a group of organisms which can interbreed freely in nature to produce fertile offspring


43. Carbon dioxide is released back to the environment by ___________ of producers and consumers


44. The study of the interrelationship between organisms and their environment is called


45. Nitrites are converted into nitrates by


46. When we eat onions, our trophic level is  


47. Abiotic components include


48. ln the food chain tree—> caterpillar   —>   robin —> hawk —> coyote,  which is the  the secondary consumer?  


49. _______________ are the cyclic pathways through which materials move from environment to organisms and back to the environment


50. The second trophic level is made of


51. Which of the following is a tertiary consumer?


52. Which of the following is a secondary consumer?


53. A group of the organisms of the same species inhabiting a specific geographical area at a particular time is called


54. Fox is a


55. Ammonia is converted into nitrite by


56. Snake is a


57. Which form of Nitrogen is taken by the producers of the ecosystem?


58. Conversion of nitrogen gas into nitrates is called


59. Snail is a


60. Organisms in the ecosystem that are responsible for the recycling of plant   animal wastes are:  


61. The conversion of ammonia into nitrites and nitrates is called


62. Which one is a nitrogen fixing organism?


63. Biological conditions that influence an organism are


64. Leech is a


65. The producers are the ___________ present in an ecosystem


66. Which   of the following is the abiotic component of the ecosystem?


67. An organism’s environment is the sum of  


68. __________ is a type of symbiosis in which smaller partner derives food and shelter from the body of larger partner and in turn harms it.


69. The largest unit of living organisms on earth is:  


70. ______________helps in maintaining a balance between the available resources and the number of individuals of a species


Short Questions

1. By which process carbon dioxide is released back to environment?
2. Define Acid rain.
3. Define Afforestation‘?  
4. Define air pollution?  
5. Define Ammonification.
6. Define and explain the ecological pyramids.
7. Define biomass.
8. Define Biosphere.
9. Define commensalism with examples.
10. Define community.
11. Define competition.
12. Define deforestation
13. Define Deforestation and describe its causes.
14. Define ecology.
15. Define environment.
16. Define food chain. Give one example.
17. Define food web.
18. Define land pollution?  
19. Define mutualism.
20. Define mutualism. Give examples.
21. Define nutrient cycles
22. Define omnivores
23. Define over population?  
24. Define parasitism.
25. Define phytoplankton.
26. Define pollution and pollutants.
27. Define pyramid of biomass.
28. Define pyramid of numbers.
29. Define Species.
30. Define symbiosis.
31. Define the two types of parasitism? Give examples.
32. Define trophic level.
33. Define Urbanization
34. Differentiate between biotic and abiotic components? ‘
35. Differentiate between DHF and DSS.
36. Differentiate between ecosystem and biosphere.
37. Differentiate between ectoparasites and endoparasites.
38. Differentiate between food chain and food web.
39. Differentiate between intraspecific and interspecific competition.
40. Differentiate between intraspecific competition and interspecific competition.
41. Differentiate between intraspecific interactions and interspecific interactions.
42. Differentiate between population and community.
43. Differentiate between species and population
44. Differentiate between the feeding behaviour of herbivores and carnivores.
45. Enlist the negative impacts of urbanization?  
46. Enlist the sources of attraction in cities for migrants?  
47. Environment friendly fuels  
48. For what purpose, the minerals released by decomposers are used?  
49. From where producers get their energy and in what form they store in themselves?
50. Give at least five examples of predators.
51. Give example of natural ecosystem and artificial ecosystem?  
52. Give two examples of natural ecosystem.
53. How acid rain is prepared?  
54. How can we control air pollution?  
55. How can we control the land pollution?  
56. How decomposers get food?
57. How dengue fever is caused?
58. How does acid rain effect soil and plants?  
59. How does energy of producers flow to herbivores?  
60. How food sources are contaminated by polluted water?  
61. How many tanneries are operating in a Kasur city?
62. How many types of ecological pyramids have?
63. How recycling helps in conservation of nature?
64. How smog is formed?  
65. How wastes of industries affect the life of aquatic animals?
66. In which form energy flows in an ecosystem?  
67. In which forms carbon is found in nature and in atmosphere?
68. In which region of the world skin cancer is higher than the other region  of the world?  
69. In which way carnivores get energy from herbivores?  
70. In which way insects attack on forest?   
71. Is ozone depletion harmful for living organisms? ,
72. ln which way, fertilizers and pesticides enter into water bodies?
73. Make a food chain with all the basic trophic levels. Also give example for each trophic level.
74. Name the basic components of an ecosystem?  
75. Name the green house gases?  
76. What are biogeochemical cycles?
77. What are biotic and abiotic components?
78. What are carnivores? Write the types of carnivores.
79. What are consumers?
80. What are decomposers?
81. What are differences between non-renewable resources and renewable resources?
82. What are herbivores?
83. What are nutrients cycle?
84. What are omnivores?
85. What are pollutants and its types?
86. What are primary consumers? Give one example.
87. What are producers?
88. What are the decomposers?  
89. What are the different classifications of consumers? Give examples.
90. What are the different levels of ecological organization?
91. What are the effects of global warming on glaciers and polar ice caps?
92. What are the environment friendly fuels?
93. What are the impacts of deforestation?  
94. What are the major causes of population growth?  
95. What are the major pollutants of water?  
96. What are the producers?  
97. What are the sources of air pollution?  
98. What are the symptoms of dengue fever?   
99. What are the three types of symbiosis?
100. What do you know about a term tannery?  
101. What do you know about ammonification?
102. What do you know about IPCC?
103. What do you know about R4?
104. What do you know about the primary, secondary and tertiary carnivores?
105. What do you know about top carnivores?  
106. What do you mean by balance in nature?  
107. What do you mean by biotic components?  
108. What do you mean by ecological pyramid?”  
109. What do you mean by Eutrophication?  
110. What do you mean by pyramid of numbers?  
111. What do you mean by the concept of 3Rs with reference to the conservation of natural resources?
112. What does a carbon cycle shows?
113. What does conservation of nature means?
114. What has estimated about islands of maldives?  
115. What is a parasite?
116. What is Acid rain?  
117. What is ammonification?
118. What is an Environment?  
119. What is atmospheric nitrogen fixation?
120. What is biological nitrogen fixation?
121. What is biological nitrogen fixation?  
122. What is biosphere?  
123. What is ecological pyramid?
124. What is eutrophication?
125. What is global warming and describe its effects.
126. What is greenhouse effect?
127. What is meant by assimilation?
128. What is meant by denitrification? What are the effects of denitrification?
129. What is meant by ecosystem? Give its components.
130. What is nitrification?
131. What is nitrogen fixation?
132. What is noise pollution and what are its immediate and long term effects?
133. What is noise? Write its effects.
134. What is noise?  
135. What is overpopulation?
136. What is predation?
137. What is role of producers in carbon cycle?  
138. What is species?  
139. What is the appearance of smog?  
140. What is the current level of urbanization in Pakistan?
141. What is the current size of population?  
142. What is the difference between nitrification and denitrification?
143. What is the direction of flow of energy in an ecosystem?  
144. What is the estimation of global temperature in future?  
145. What is the function of green-house gases?  
146. What is the impact of acid rain on aquatic life?
147. What is the impact of acid rain on building materials?  
148. What is the importance of nitrogen in living organisms?  
149. What is the importance of predation?
150. What is the law for energy flow in an ecosystem?  
151. What is the mission of IPCC?    
152. What is the pH of acid rain‘?  
153. What is the positive impact of urbanization?
154. What is the promotion of algal bloom ?
155. What is the R1 Principle?
156. What is the R2 Principle?
157. What is the R3 Principle?
158. What is the range of biosphere?  
159. What is the result of burning of wood and fossil fuels?  
160. What is the role of algal bloom in water bodies?  
161. What is the role of decomposers in the depletion of oxygen?
162. What is the role of photosynthesis in carbon cycle?
163. What is the role of producers in photosynthesis?  
164. What problems can be solved by planned urbanization?  
165. What type of decomposers are usually found in a pond ecosystem?
166. What was the world population about 250 years ago?
167. Which are the principal decomposers of biosphere?  
168. Which atom is the principal building block of bio-molecules?  
169. Which diseases are caused by smog ?
170. Which historical building is badly corroded by acid rain?    
171. Which human activity disturbs balance in nature? ‘  
172. Which is the primary source of energy for all ecosystem?  
173. Which organisms are present at the base of food chain?
174. Which type of interaction is involved in food chain?
175. Which ways should we adopt to control air pollution?  
176. Why carbon cycle is called as a perfect cycle?  
177. Why do the humans cut trees?  
178. Why useful energy decreases during its transfer at each trophic level?
179. Write down some measures to control water pollution?  
180. Write down the contribution of Charles Elton?  
181. Write down the fear of scientists about Maldives?  
182. Write down the types of pollutants”
183. Write down the ways of nitrogen fixation?  
184. Write the symptoms of Dengue fever.
185. Write two effects of air pollution.
186. Write down a major drawback of advanced technology?  

Long Questions

1. Define greenhouse effect. Describe the effects of global warming.
2. Describe different types of symbiosis.
3. Give a detail account of urbanization.
4. What are different biotic components of ecosystem? Describe the role of each component in ecosystem.
5. What is air pollution? Describe the effects of air pollution.
6. What is meant by acid rain? Describe its effects.
7. What is water pollution? Describe its effects and control.
8. Write a note on carbon cycle.
9. Write a note on flow of material in an ecosystem.
10. Write a note on predation.
11. Write the names of stages of nitrogen cycle and explain them.

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