Science and Technology II · Textbook solutions
Environmental Management
Every solved example, exercise, and miscellaneous question, in the order the textbook teaches them. Plus every board question asked from this chapter. · 17 questions
Exercise
17 q
- Ex Q1Reorganize the following food chain. Describe the ecosystem to which it belongs. Grasshopper – Snake – Paddy field – Eagle – Frog.
- Ex Q2Explain the statement- ‘we have got this Earth planet on lease from our future generations and not as an ancestral property from our ancestors.’
- Write short notes.Ex Q3(a)Environmental Conservation.
- Ex Q3(b)Chipko Movement of Bishnoi.
- Ex Q3(c)Biodiversity.
- Ex Q3(d)Sacred Groves.
- Ex Q3(e)Disaster and its management.
- Ex Q4How will you justify that overcoming the pollution is a powerful way of environmental management?
- Ex Q5Which projects will you run in relation to environmental conservation? How?
- Answer the following.Ex Q6(a)Write the factors affecting environment.
- Ex Q6(b)Why does the human beings have important place in environment?
- Ex Q6(c)Write the types and examples of biodiversity.
- Ex Q6(d)How the biodiversity can be conserved?
- Ex Q6(e)What do we learn from the story of Jadav Molai Peyang?
- Ex Q6(f)Write the names of biodiversity hot spots.
- Ex Q6(f-2)Which are the reasons for endangering the many species of plants and animals? How can we save those?
- Ex Q7What are the meanings of following symbols? Write your role accordingly?
What the board has asked from this chapter
Questions per paper · 12 papers · 2016 to 2026
2016: 2 questions per paper. 2018: 2 questions per paper. 2019: 5 questions per paper. 2020: 6 questions per paper. 2022: 4 questions per paper. 2023: 4 questions per paper. 2024: 4 questions per paper. 2025: 3 questions per paper. 2026: 4 questions per paper
June 2026
3 q
- Q1(B)(ii)खाली दिलेली अन्नसाखळी योग्य क्रमाने लिहा : नाकतोडा — साप — भातशेती — गरुड — बेडूकReorganize the following food chain: Grasshopper — Snake — Paddy field — Eagle — FrogEcosystem and Ecological Balance
- Q2(B)(ii)खाली दिलेला ओघतक्ता पूर्ण करा : पर्यावरणावर परिणाम करणारे घटक नैसर्गिक घटक : उदा. ____ मानवनिर्मित घटक : उदा. ____Complete the concept map: 'Factors affecting environment' branches into 'Natural factors' (Ex. ____________) and 'Manmade factors' (Ex. ____________).Ecosystem and Ecological Balance
- Q3(iii)टीप लिहा : पर्यावरण संवर्धनWrite a short note on environmental conservation.Environmental Conservation
March 2026
5 q
- Q1(B)(ii)जागतिक जैवविविधता दिन कधी साजरा करतात ?Which day is observed as World Biodiversity Day?Biodiversity and Conservation
- दक्षिण भारतामध्ये विविध राज्यांत मोठ्या प्रमाणात भात शेती केली जाते. तेथील भात पिकांवर अन्नासाठी मोठ्या प्रमाणावर नाकतोडे येतात. त्याचबरोबर तेथील शेतीमधील चिखलात नाकतोडे यांचा भक्ष्य म्हणून उपयोग करण्याकरीता बेडकांची संख्यासुद्धा मोठ्या प्रमाणात असते आणि आवडते खाद्य म्हणून बेडकांच्या भक्षणासाठी सापही तेथे असतात. परंतु जर अचानक तेथील बेडकांची संख्या कमी झाली तर.Read the paragraph and answer the questions: Paddy is cultivated on large scale in various states of South India. Paddy fields are frequently attacked by grasshoppers. Similarly, frogs are also present in large number in the mud of paddy fields, to feed upon grasshoppers, and snakes are also present therein to feed upon their favourite food - frogs. However, if frog population declines all of a sudden,Q2(B)(iii)(a)खाली दिलेला परिच्छेद वाचून प्रश्नांची उत्तरे लिहा : भाताच्या पिकांवर काय परिणाम होईल ?What will be the effect on paddy crop?Ecosystem and Ecological Balance
- Q2(B)(iii)(b)खाली दिलेला परिच्छेद वाचून प्रश्नांची उत्तरे लिहा : कुठल्या भक्षकांची संख्या वाढेल ?Number of which components will increase?Ecosystem and Ecological Balance
- Q3(iii)खालील धोक्यात आलेल्या प्रजातींची प्रत्येकी दोन उदाहरणे लिहा : (अ) संकटग्रस्त प्रजाती (ब) दुर्मिळ प्रजाती (क) संवेदनशील प्रजाती.Give two examples of each of the threatened species given below: (a) Endangered species (b) Rare species (c) Vulnerable species.Biodiversity and Conservation
- Q3(vii)कीडनाशक फवारणीसाठी तुम्ही कोणती काळजी घ्याल ?Which precautions will you take during the spraying of pesticides?Environmental Conservation
July 2025
2 q
- Q1(A)(v)पश्चिम बंगालमधील ____ हे वाघासाठी राखीव आहे.____ of West Bengal is reserved for tigers.
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Biodiversity and Conservation - Q4(i)पर्यावरणात माझी भूमिका दर्शविणारा ओघ तक्ता पूर्ण करा : पर्यावरण संवर्धनात माझी भूमिका टिकवणेComplete the following flow chart explaining my role in environmental conservation: My Role in Environmental Conservation Conservation, ____, ____, ____, ____, ____ (six boxes, one filled).Environmental Conservation
March 2025
4 q
- Q2(B)(i)खालील अन्नसाखळी पूर्ण करा : हिरव्या वनस्पती ____ ____ ____ गरुड ____Complete the following food chain: Grass ____ ____ ____ Eagle ____Ecosystem and Ecological Balance
- Q2(B)(v)खालील संकल्पनाचित्र पूर्ण करा : प्रक्रियेनंतर मिळणारे सांडपाणीComplete the following conceptual picture (uses of 'Sewage after processing' — four uses around the central box).Environmental Conservation
- Q3(vi)आम्ल पर्जन्याचे घटक कोणते ? त्याचे पृथ्वीतळावर होणारे कोणतेही दोन दृष्यपरिणाम लिहा.What are the constituents of acid rain? What are its two effects on earth's surface?Environmental Conservation
- Q4(i)जैवविविधता म्हणजे काय ? जैवविविधता संवर्धनाचे चार उपाय लिहा.What is biodiversity? Write any four steps to conserve biodiversity.Biodiversity and Conservation
July 2024
4 q
- Q1(A)(ii)____ हा दुर्मिळ प्रजातीमधील प्राणी आहे.One of the rare species is ____.
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Biodiversity and Conservation - Q1(B)(ii)योग्य जोडी जुळवा : गट ‘अ’ : (1) जैविक घटक गट ‘ब’ : (अ) माती (ब) वनस्पती (क) सूर्यप्रकाशMatch the correct pairs: Column 'A': (1) Biotic components ; Column 'B': (a) Soil, (b) Plant, (c) Sunlight.Ecosystem and Ecological Balance
- Q2(B)(v)खालील ओघतक्ता पूर्ण करा : पर्यावरण संवर्धनाची गरज निसर्गाचा समतोल टिकवण्यासाठी नैसर्गिक, मानवनिर्मित समस्या निराकरण्यासाठीComplete the following flow chart: 'Need of Environmental Conservation' is at the centre, with six boxes around it. Two are given: 'To maintain the balance in nature' and 'To solve the natural and artificial problems'. Fill the remaining four boxes.Environmental Conservation
- Q3(iv)खालील चिन्ह संकेत काय सांगतात ? त्या आधारे तुमचा संदेश लिहा.What is the meaning of the following symbols? Write your role accordingly.Environmental Conservation
March 2024
4 q
- Q1(B)(iii)खालील विधान सत्य किंवा असत्य ते लिहा : पाण्याचा वापर करून उपयोगी जीवांची निर्मिती करणे म्हणजे नीलक्रांती होय.State true or false: Production of various useful aquatic organisms with the help of water is called blue revolution.Blue Revolution
- पर्यावरण संवर्धन आणि जैवविविधतेवर आधारित खालील प्रश्नांची उत्तरे लिहा :Answer the following questions based on environmental conservation and biodiversity:Q4(ii)(a)तक्ता पूर्ण करा : धोक्यात आलेल्या प्रजातींचे वर्गीकरणComplete the flow chart: Classification of threatened species (into four categories).Biodiversity and Conservation
- Q4(ii)(b)जैवविविधतेचे संवर्धन कसे करता येईल ? कोणतेही चार मुद्दे लिहा.How can biodiversity be conserved? Give any four points.Biodiversity and Conservation
- Q4(ii)(c)तक्ता पूर्ण करा : धोक्यात आलेल्या वन्यजीव प्रजातींची यादी (रेड लिस्ट)च्या पृष्ठाचे रंग रेड लिस्टComplete the flow chart: Colour of the pages in the Red List of Endangered Species (Red List two colours).Biodiversity and Conservation
March 2023
4 q
- Q1(A)(iii)The apex consumer is ____.
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Ecosystem and Ecological Balance - Q1(B)(iv)Match the correct pair:
Column 'A' Column 'B' (1) Forest Conservation Act (a) 1986 (b) 1980 (c) 1970 Environmental Conservation - Q2(B)(i)Write a short note on Environmental Conservation.Environmental Conservation
- Q3(iii)Write the factors affecting the environment.Ecosystem and Ecological Balance
March 2022
4 q
- Q1(A)(ii)Giant squirrel is an example of ____ threatened species.
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Biodiversity and Conservation - Q1(B)(iii)Complete the correlation: Western ghat : Asiatic lion : : Sunderban sanctuary : ____Biodiversity and Conservation
- Q2(B)(ii)What do we learn from the story of Jadav Molai Payeng?Environmental Conservation
- Q3(i)Explain the meanings of the following symbols: (1), (2) and (3).Environmental Conservation
March 2020
6 q
- Q3(iii)Which precautions are necessary for proper decomposition of domestic waste?Environmental Conservation
- Attempts at various levels are performed for conserving environment. Which role would you like to perform? Give two actions each.Q4(i)(a)Give two actions you would perform in the role of Prevention for conserving the environment.Environmental Conservation
- Q4(i)(b)Give two actions you would perform in the role of Control for conserving the environment.Environmental Conservation
- Q4(i)(c)Give two actions you would perform in the role of Production for conserving the environment.Environmental Conservation
- Q4(i)(d)Give two actions you would perform in the role of Awareness for conserving the environment.Environmental Conservation
- Q4(i)(e)Give two actions you would perform in the role of Conservation for conserving the environment.Environmental Conservation
March 2019
5 q
- Q1(B)(iii)In a food chain, autotrophic plants are present at the ____________ level.
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Ecosystem and Ecological Balance - Observe the following figure and answer the questions.Q3(vi)(a)Identify the process shown in the figure.Environmental Conservation
- Q3(vi)(b)Explain the process in short.Environmental Conservation
- Q4(i)(a)Identify the following symbols and state their significance:Environmental Conservation
- Q4(i)(b)How can biodiversity be conserved?Biodiversity and Conservation
March 2018
2 q
- Q2(3)Suggest control measures of noise pollution.Control of Noise Pollution
- Q3(1)Population explosion is the root cause for depletion of natural resources. Explain.Environmental Conservation
March 2016
2 q
- Q2(5)Write any two measures to conserve water.Environmental Conservation
- Q3(4)What is '3R' mantra? Write its significance.Environmental Conservation
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
Asked 3 times: Mar 2019, Mar 2024*, Mar 2025* (* = numbers or wording changed that year)
Q4(i)जैवविविधता म्हणजे काय ? जैवविविधता संवर्धनाचे चार उपाय लिहा.What is biodiversity? Write any four steps to conserve biodiversity.Question 2
Asked 2 times: Mar 2023, Jun 2026
Q3(iii)टीप लिहा : पर्यावरण संवर्धनWrite a short note on environmental conservation.Question 3
Asked 2 times: Mar 2023, Jun 2026* (* = numbers or wording changed that year)
Q2(B)(ii)खाली दिलेला ओघतक्ता पूर्ण करा : पर्यावरणावर परिणाम करणारे घटक नैसर्गिक घटक : उदा. ____ मानवनिर्मित घटक : उदा. ____Complete the concept map: 'Factors affecting environment' branches into 'Natural factors' (Ex. ____________) and 'Manmade factors' (Ex. ____________).Question 4
Asked 2 times: Mar 2020, Jul 2025* (* = numbers or wording changed that year)
Q4(i)पर्यावरणात माझी भूमिका दर्शविणारा ओघ तक्ता पूर्ण करा : पर्यावरण संवर्धनात माझी भूमिका टिकवणेComplete the following flow chart explaining my role in environmental conservation: My Role in Environmental Conservation Conservation, ____, ____, ____, ____, ____ (six boxes, one filled).Question 5
This type asked 9 times: Mar 2016, Mar 2018, Mar 2019, Mar 2020, Mar 2022, Mar 2023, Jul 2024, Mar 2025, Mar 2026. This one: Mar 2026
Q3(vii)कीडनाशक फवारणीसाठी तुम्ही कोणती काळजी घ्याल ?Which precautions will you take during the spraying of pesticides?Question 6
This type asked 6 times: Mar 2019, Mar 2023, Jul 2024, Mar 2025, Mar 2026, Jun 2026. This one: Jun 2026
Q1(B)(ii)खाली दिलेली अन्नसाखळी योग्य क्रमाने लिहा : नाकतोडा — साप — भातशेती — गरुड — बेडूकReorganize the following food chain: Grasshopper — Snake — Paddy field — Eagle — FrogQuestion 7
This type asked 5 times: Mar 2022, Mar 2024, Jul 2024, Jul 2025, Mar 2026. This one: Mar 2026
Q3(iii)खालील धोक्यात आलेल्या प्रजातींची प्रत्येकी दोन उदाहरणे लिहा : (अ) संकटग्रस्त प्रजाती (ब) दुर्मिळ प्रजाती (क) संवेदनशील प्रजाती.Give two examples of each of the threatened species given below: (a) Endangered species (b) Rare species (c) Vulnerable species.Question 8
This type asked 3 times: Mar 2019, Mar 2022, Jul 2024. This one: Jul 2024
Q3(iv)खालील चिन्ह संकेत काय सांगतात ? त्या आधारे तुमचा संदेश लिहा.What is the meaning of the following symbols? Write your role accordingly.Question 9
Asked once: Mar 2025 (same type asked 9 times)
Q2(B)(v)खालील संकल्पनाचित्र पूर्ण करा : प्रक्रियेनंतर मिळणारे सांडपाणीComplete the following conceptual picture (uses of 'Sewage after processing' — four uses around the central box).Question 10 (case study, 2 parts)
Asked once: Mar 2026 (same type asked 6 times)
Read the paragraph and answer the questions: Paddy is cultivated on large scale in various states of South India. Paddy fields are frequently attacked by grasshoppers. Similarly, frogs are also present in large number in the mud of paddy fields, to feed upon grasshoppers, and snakes are also present therein to feed upon their favourite food - frogs. However, if frog population declines all of a sudden,Q2(B)(iii)(a)खाली दिलेला परिच्छेद वाचून प्रश्नांची उत्तरे लिहा : भाताच्या पिकांवर काय परिणाम होईल ?What will be the effect on paddy crop?Q2(B)(iii)(b)खाली दिलेला परिच्छेद वाचून प्रश्नांची उत्तरे लिहा : कुठल्या भक्षकांची संख्या वाढेल ?Number of which components will increase?