Class IX - EVA

Week 1: Topics to be covered:

• Definition of Ecology

• Components of Ecosystem—Abiotic and Biotic components

• The different levels—Population, Community, Ecosystem, Biome and Biosphere

Assignment

Assignment: 15 marks. (to be submitted by 22.03.2020)

1. Define the term Ecology. Who coined the term? [2]

2. Give two examples each of natural and artificial ecosystem. [2]

3. Define Population, Community. [2]

4. Differentiate between a biome and a biosphere. [2]

5. Total number of plants in an area is called _____________ and total number of animals in an area is called ____________________________. [2]

6. Name the temperate grassland biome of the following: [5]

1. Central Asia

2. North America

3. South America

4. Australia

5. South Africa

Important Note:

Answers to be typed and mailed to the respective teacher by

[ IX SECTIONS A-D] bhaswati.mukherjee@dpsn.org.in

[ IX SECTIONS E-H] chaitri.sen@dpsn.org.in

Assignment

Assignment: 10 marks ( to be submitted by 29.03.2020)

1. What is the role of decomposers in an ecosystem? [2]

2. The flow of Energy is unidirectional. Explain.[2]

3. Differentiate between a food chain and a food web. [2]

4. Define Trophic level and Detritus [2]

5. Draw a line diagram of a food chain with five trophic levels. [2]

Important Note:

Answers to be typed and mailed to the respective teacher.

[ IX SECTIONS A-D] bhaswati.mukherjee@dpsn.org.in

[ IX SECTIONS E-H] chaitri.sen@dpsn.org.in

Assignment

CHAPTER: ECOLOGICAL NICHE AND SUCCESSION

BOOK—ICSE ENVIRONMENTAL APPLICATIONS BY HUMA SYED

Topics to be covered:

• Concept of Species

• Introduced, endemic and keystone species

• Extinction of Species

• Minimum viable population

• Ecotypes

REFER TO THE PPT ATTACHED IN WEEK 5.

Assignment: 20 marks. (to be submitted by 26.04.2020)

1. What are introduced species? Give examples. [2]

2. What are endemic species? Give examples. [2]

3. Why are sea otters considered classic examples of keystone species? [3]

4. Mention any five causes of extinction of species. [5]

5. Mention any three impact of extinction of species. [3]

6. Define MVP. [2]

7. With the help of an example explain the term Ecotypes. [3]

PROJECT WORK: Kindly continue with your projects.

Answers to be typed and mailed to the respective teacher.

[ IX SECTIONS A-D] bhaswati.mukherjee@dpsn.org.in

[ IX SECTIONS E-H] chaitri.sen@dpsn.org.in

CHAPTER: ECOLOGICAL NICHE AND SUCCESSION

BOOK—ICSE ENVIRONMENTAL APPLICATIONS BY HUMA SYED

Topics to be covered:

Clarification of doubts and Revision of the full chapter (Ecological Niche and Succession)

REFER TO THE PPT ATTACHED IN WEEK 5 ON ECOLOGICAL NICHE AND SUCCESSION.

REFER TO THE LINKS GIVEN BELOW.

ECOLOGICAL SUCCESSION https://www.youtube.com/watch?v=8ceDE01iWLE

STAGES IN HYDROSERE https://www.youtube.com/watch?v=2UfvZ4GkYT4

STAGES IN XEROSERE https://www.youtube.com/watch?v=VuK4QmkLhlA

KEYSTONE SPECIES https://www.youtube.com/watch?v=_IWw8Ruz8Uo&t=2s

Assignment

All pending assignments to be completed.

PROJECT WORK: Kindly continue with your projects.

Answers to be typed and mailed to the respective teacher.

[ IX SECTIONS A-D] bhaswati.mukherjee@dpsn.org.in

[ IX SECTIONS E-H] chaitri.sen@dpsn.org.in

CHAPTER: CONSERVATION OF ECOSYSTEM

Topics to be covered:

• Need of wildlife conservation.

• IUCN

• Red Data Book

• Strategies to conserve Wildlife—In-situ and Ex-situ conservation.

REFER TO THE PPT ATTACHED

Assignment

All pending assignments to be completed.

Assessment to be taken on chapter Ecological Niche and Succession.

PROJECT WORK: Kindly continue with your projects.

Answers to be typed and mailed to the respective teacher.

[ IX SECTIONS A-D] bhaswati.mukherjee@dpsn.org.in

[ IX SECTIONS E-H] chaitri.sen@dpsn.org.in