Chapters
Chapter 4: Ecosystems
Multiple choice Questions [Pages 40 - 41]
Selina solutions for Concise Biology Class 8 ICSE Chapter 4 Ecosystems Multiple choice Questions [Pages 40 - 41]
Put a tick mark (✓) against the correct alternative in the following statement:
The term “ecosystem” is derived from the Greek word “Oikos” meaning.
Body weight
Food
House
Size
Put a tick mark (✓) against the correct alternative in the following statement:
Rat in any food chain would occupy the position of
Tertiary consumer
Secondary consumer
Primary consumer
Producer
Put a tick mark (✓) against the correct alternative in the following statement:
Evergreen broad-leaved trees are characteristic of
Tropical rain forests
Temperate deciduous forests
Coniferous forests
All of the above types of forests.
Put a tick mark (✓) against the correct alternative in the following statement:
The number of steps in a food chain can never be more than
Four
Five
Six
Seven
Short Answer Questions [Page 41]
Selina solutions for Concise Biology Class 8 ICSE Chapter 4 Ecosystems Short Answer Questions [Page 41]
Mention if the following statement is true or false
Snakes are primary consumers
True
False
Mention if the following statement is true or false
Some humans are strictly primary consumers & some others are of other types of consumers also
True
False
Mention if the following statement is true or false .
No ecosystem can survive without light
True
False
Match the items in Column I with as many items as possible in Column II.
| column I | Column II | |
| 1 | Grass | (i) Carnivore |
| 2 | Deer | (ii) Decomposers |
| 3 | cobra | (iii) Primary Consumer |
| 4 | Vulture | (iv) Autotroph |
| 5 | Microbes | (v) Scavenger |
Rewrite the following in their correct sequence in a food chain:
Snake → Grasshopper → Grass → Frog
Rewrite the following in their correct sequence in a food chain:
Grass → Tiger → Deer
Rewrite the following in their correct sequence in a food chain:
Snake → Peacock → Rat → Wheat
Long Answer Questions [Page 41]
Selina solutions for Concise Biology Class 8 ICSE Chapter 4 Ecosystems Long Answer Questions [Page 41]
Differentiate among primary, secondary and tertiary consumers. Give one example of each in a food chain.
Define the term flora
Define the term fauna.
List any three members each of the flora and fauna of tropical rain forests.
Define the following term and give two examples.
Autotrophs
Define a consumer and give two examples.
Define the food chain and give two examples.
Define the following term and give two examples:
Symbiosis
Define the following term and give two examples:
Parasitism
Define the following term and give two examples:
Predation
Chapter 4: Ecosystems
Selina solutions for Concise Biology Class 8 ICSE chapter 4 - Ecosystems
Selina solutions for Concise Biology Class 8 ICSE chapter 4 (Ecosystems) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Biology Class 8 ICSE solutions in a manner that help students grasp basic concepts better and faster.
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Concepts covered in Concise Biology Class 8 ICSE chapter 4 Ecosystems are Concept of Ecosystems, Biotic Components Consisting of Producers, Consumers, Decomposers, Meaning of Food Chain. Food Web, and Pyramid of Numbers, Interdependence Between Organisms: Symbiosis, Parasitism and Predation., Brief Account of Abiotic Or Non-living Components, Concept for Forest Ecosystem - Flora and Fauna, Concept of Consumer Rights.
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