Biology · Textbook solutions

Biodiversity, Conservation and Environmental Issues

Every solved example, exercise, and miscellaneous question, in the order the textbook teaches them. Plus every board question asked from this chapter. · 21 questions

Exercise

21 q

Q1. Choose the correct option

Practice · 5

Choose the correct option
Ex Q1(1) $Observe the graph and select correct option.$
Tap an option to check your answer.
Ex Q1(2) $Select odd one out on the basis of Ex situ conservation.$
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Ex Q1(3) $Which of the following factors will favour species diversity?$
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Ex Q1(4) $The term “terror of Bengal’ is used for ___________.$
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Ex Q1(5) $CFC are air polluting agents which are produced by ___________.$
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Q2. Very short answer type questions

Practice · 5

Very short answer type questions.
Ex Q2(1) $Give two examples of biodegradable materials released from sugar industry.$
Ex Q2(2) $Name any 2 modern techniques of protection of endangered species.$
Ex Q2(3) $Where was ozone hole discovered?$
Ex Q2(4) $Give one example of natural pollutant.$
Ex Q2(5) $What do you understand by EW category of living being?$

Q3. Short answer type questions

Practice · 6

Short answer type questions.
Ex Q3(1) $Dandiya raas is not allowed after 10.00 pm. Why?$
Ex Q3(2) $Tropical regions exhibit species richness as compared to polar regions. Justify.$
Ex Q3(3) $How does genetic diversity affect sustenance of a species?$
Ex Q3(4) $Is green house effect boon or bane? Give your opinion.$
Ex Q3(5) $\text{CO}$
Ex Q3(6) $Name two types of particulate pollutants found in air. Add a note on ill effects of the same on human health.$

Q4. Long answer type questions

Practice · 5

Long answer type questions.
Ex Q4(1) $Montreal protocol is an essential step. Why is it so?$
Ex Q4(2) $Name any 2 personalities who have contributed to control deforestation in our country. Elaborate on importance of their work.$
Ex Q4(3) $How BS emission standards changed over time? Why is it essential?$
Ex Q4(4) $During large public gatherings like Pandharpur vari mobile toilets are deployed by the government. Explain how this organic waste is disposed.$
Ex Q4(5) $How Indian culture and traditions helped in bio-diversity conservation? Give importance of conservation in terms of utilitarian reasons.$

What the board has asked from this chapter

Questions per paper · 5 papers · 2024 to 2026

June 2026

2 q

Q. 1(iv) $Extinction of a host fish leads to extinction of unique parasites of it. This is an example of ________ .$
Tap an option to check your answer.
Loss of Biodiversity
Q. 23 $Write a note on in situ conservation of biodiversity.$
Conservation of Biodiversity

February 2026

3 q

Q. 1(vii) $Identify invasive plant species from the following :$
Tap an option to check your answer.
Loss of Biodiversity
Q. 2(ii) $Define endangered species.$
Loss of Biodiversity
Q. 9 $Explain various harmful effects of noise pollution on human being.$
Environmental Issues

July 2025

2 q

Q. 2(v) $Identify 'A' from the graph given below showing species area relationship :$
Patterns of Biodiversity
Q. 26 $Mention any two major types of air pollutants. Add a note on their ill effects on human health.$
Environmental Issues

July 2024

2 q

Q. 1(x) $Rivet Popper Hypothesis explains$
Tap an option to check your answer.
Patterns of Biodiversity
Q. 22 $Describe any three causes for loss of biodiversity.$
Loss of Biodiversity

March 2024

2 q

Q. 1(x) $Observe the graph and select correct option :$
Tap an option to check your answer.
Patterns of Biodiversity
Q. 22 $Explain green house effect with reference to gases responsible for it and their sources.$
Greenhouse Effect and Global Warming

The 10 board questions to practise first

The questions the board asked again come first, most asked first. Each one says how often and when.

Question 1
This type asked 2 times: Jul 2025, Feb 2026. This one: Feb 2026
Q. 9 $Explain various harmful effects of noise pollution on human being.$
Question 2
This type asked 2 times: Mar 2024, Jul 2025. This one: Jul 2025
Q. 2(v) $Identify 'A' from the graph given below showing species area relationship :$
Question 3
Asked once: Jul 2025 (same type asked 2 times)
Q. 26 $Mention any two major types of air pollutants. Add a note on their ill effects on human health.$
Question 4
Asked once: Mar 2024 (same type asked 2 times)
Q. 1(x) $Observe the graph and select correct option :$
Tap an option to check your answer.
Question 5
Asked once: Jun 2026
Q. 23 $Write a note on in situ conservation of biodiversity.$
Question 6
Asked once: Jun 2026
Q. 1(iv) $Extinction of a host fish leads to extinction of unique parasites of it. This is an example of ________ .$
Tap an option to check your answer.
Question 7
Asked once: Feb 2026
Q. 2(ii) $Define endangered species.$
Question 8
Asked once: Feb 2026
Q. 1(vii) $Identify invasive plant species from the following :$
Tap an option to check your answer.
Question 9
Asked once: Jul 2024
Q. 1(x) $Rivet Popper Hypothesis explains$
Tap an option to check your answer.
Question 10
Asked once: Jul 2024
Q. 22 $Describe any three causes for loss of biodiversity.$

Exercise

Q1. Choose the correct option

Q2. Very short answer type questions

Q3. Short answer type questions

Q4. Long answer type questions

What the board has asked from this chapter

June 2026

February 2026

July 2025

July 2024

March 2024

The 10 board questions to practise first

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10