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Selina solutions for Class 8 Biology chapter 4 - Ecosystems

Selina Concise Biology for Class 8 (2018-19 Session)

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Selina Selina Concise Biology Class 8 (2018-19 Session)

Selina Concise Biology for Class 8 (2018-19 Session)

Chapter 4: Ecosystems

Chapter 4: Ecosystems solutions [Page 0]

Put a tick mark (✓) against the correct alternative in the following statement:

The term “ecosystem” is derived from the Greek word “Oikos” meaning.

  1. Body weight
  2. Food
  3. House
  4. Size

 

Put a tick mark (✓) against the correct alternative in the following statement:

Rat in any food chain would occupy the position of

  1. Tertiary consumer
  2. Secondary consumer
  3. Primary consumer
  4. Producer

Put a tick mark (✓) against the correct alternative in the following statement:

 Evergreen broad-leaved trees are characteristic of

  1. Tropical rain forests
  2. Temperate deciduous forests
  3. Coniferous forests
  4. All of the above types of forests.

Chapter 4: Ecosystems solutions [Page 0]

Mention if the following statement is true (T) or false (F).

Snakes are primary consumers (T/F)

Mention if the following statement is true (T) or false (F).

Some humans are strictly primary consumers & some others are of other types of consumers also (T/F)

 

Mention if the following statement is true (T) or false (F).

No ecosystem can survive without light (T/F)

Mention if the following statement is true (T) or false (F).

Cattle go to ponds for drinking water, so they are a constituent of pond ecosystem (T/F)

Match the items in Column I with as many items as possible in Column II.

Rewrite the following in their correct sequence in a food chain:

(a) Snake → Grasshopper → Grass → Frog
(b) Grass → Tiger → Deer
(c) Snake → Peacock → Rat → Wheat

Chapter 4: Ecosystems solutions [Page 0]

Differentiate among primary, secondary and tertiary consumers. Give one example of each in a food chain.

Define the term (a) flora and (b) fauna.

List any three members each of the flora and fauna of tropical rain forests.

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 Selina Concise Biology Class 8 (2018-19 Session)

Selina Concise Biology for Class 8 (2018-19 Session)

Selina solutions for Class 8 Biology chapter 4 - Ecosystems

Selina solutions for Class 8 Biology 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 Selina Concise Biology for Class 8 (2018-19 Session) solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com are providing such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 8 Biology 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.

Using Selina Class 8 solutions Ecosystems exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 8 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 4 Ecosystems Class 8 extra questions for Biology and can use Shaalaa.com to keep it handy for your exam preparation

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