Chapter 7
Human Environment
Highlights
- A. Tick the correct option
- B. Fill in the blanks
- C. Match the following
- D. Correct the following sentences
- E. Answers the following questions
EXERCISE
A. Tick the Correct Option
- 1. Which one of the following represents human environment?
Answer: vacuole
- 2. The uneven terrain of highland areas results in-
Answer: vacuole
- 3. Transportation is helpful for the-
Answer: vacuole
- 4. The floating towns are-
Answer: vacuole
- 5. HBJ pipelines is used for the transportation of-
Answer: vacuole
B. Fill in the blanks.
- 1. Road transport is used for ___________ distances.
- 2. ___________ are commonly used for transportation of liquid materials.______.
- 3. Metro is available in large cities like ___________ and ___________.
- 4. Nomads are completely dependent on the ___________ to satisfy their basic needs.
- 5. ___________ provide communication services even to the remote areas of the country.
C. Match the following :
- Column A
- 1. Golgi Complex
- 2. Ribosomes
- 3. Chromosomes
- 4. Dead cells
- 5. Photosynthesis
- Column B
- (a) genes
- (b) cork
- (c) chloroplasts
- (d) packaging center
- (e) protein synthesis
C. Write True or False for the following statements.
- 1. Pipelines are the most important means for transporting solid goods.
Answer: Sharing of chores reduces the burden.
- 2. Metro rails are the fastest and the most comfortable means of transport in metropolitan cities.
Answer: The older family member pass on the family traditions to the younger generation.
- 3. Waterways are the cheapest mode of transport.
Answer: There is more interaction between parents and children in nuclear families.
- 4. In ancient times, cultivation was common in the hilly areas only.
Answer: A surname is a family name.
- 5. Plains are the least favourable location for the establishment of compact settlements.
Answer: A surname is a family name.
D. Answer the following questions in brief.
- 1. What are wet point settlements?
Answer: The (main) factors that determine the shape of a cell are location and function.
- 2. Explain the term ‘transportation’. Name the various means of transportation.
Answer: Distinguish between unicellular and multicellular organisms are
Unicellular organisms are made up of a single cell. e.g., Euglena and Amoeba.
Multicellular organisms are made up of many cells. e.g., Humans and Birds.
- 3. What is the importance of means of communication?
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
- 4. Give two advantages of electrification of railways.
Answer: Mitochondria is known as the Powerhouse of the cell.
Mitochondria are the site of cellular respiration. Energy is produced during this process. Due to this, mitochondria are called the Powerhouse of the cell.
- 5. Mention two advantages of waterways over airways.
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
E. Answer the following questions.
- 1. What are the various factors responsible for permanent settlements?
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
- 2. What are the various advantages of roadways over other means of transport?
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
- 3. Explain how transportation and communication help in the economic development of a country.
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
- 4. What was the impact of the discovery of fire, wheel and iron on human civilisations?
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
- 5. How has the computer technology revolutionised the process of communication?
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
Related Topics
- Chapter 1 The Cell – Its Structure and Functions
- Chapter 2 Microorganisms: Friends or Foes
- Chapter 3 Metals and Non-Metals
- Chapter 4 Force and Pressure
- Chapter 5 Friction
- Chapter 6 Sources of Energy
- Chapter 7 Combustion
- Chapter 8 Conservation of Plants and Animals
- Chapter 9 Crop Production and Its Management
- Chapter 10 Refraction and Dispersion of Light
- Chapter 11 The Human Eye
- Chapter 12 Sound
- Chapter 13 Synthetic Fibres and Plastics
- Chapter 14 Reproduction in Animals
- Chapter 15 Reaching the Age of Adolescence
- Chapter 16 Electric Current and Its Chemical Effects
- Chapter 17 Stars and Solar System
- Chapter 18 Earthquakes
- Chapter 19 Pollution of Air
- Chapter 20 Pollution of Water