Science Question Paper Solutions (Maharashtra Board 6th Standard)

Maharashtra Board Science Test Question Paper Solution

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Q.A) Fill in the blanks.

1. The layer of ozone gas absorbs Ultraviolet (U.V) rays rays that come from the sun to the earth. 
2. 71% percentage of the land is covered by water. 
3. To inhale oxygen and to exhale carbon dioxide is called respiration. 
4. Pitcher plants are insectivorous.
5. Hen is a oviparous animal. 
6. Movements in the interior of the earth release tremendous amounts of energy . 
7. Landslides occur in hilly areas due to a cloudburst . 
8. When the substance cools, or loses heat, it changes from gaseous to liquid and liquid to solid state. 
9. A thermometer is used to measure temperature . 
10. The maximum production of rubber in India is in Kerala . 
11. Botanical name of rubber plant is Hevea brasiliensis . 
12. Cereals provide maximum energy to our body. 
13. Amla is a rich source of vitamin C. 
14. Cells of epidermis contain a pigment called melanin . 
15. The human skeletal, system is divided into two parts. 

Q.B) Match the pairs.

1.

2.

3.

Q.C) Draw neat labelled diagram.

01. Layers of land.

Answer: 

02. Structure of the skin.

Answer: 

03. Photosynthesis

Q.D) State whether True or False. Correct if False.

01. The amount of gases in the air is greatest near the surface and becomes rarer at higher 

altitudes.

Answer: True

02. Is all the food we eat used by the body?

Answer: False

Explanation: Non-essential and undigested food is thrown out of the body in the form of waste.

03. The human skeleton protects the internal organs.

Answer: True

04. All the skull joints are immovable.

Answer: False

Explanation: Except lower jaw, all the skull joints are immovable.

05. The biotic component of our body is bone cell.

Answer: True

06. Glass is a man-made substance.

Answer: True

Q.E) Give two examples of each of the following.

01. Synthetic fibres

Answer: terylene, rayon

02. Abiotic natural substances

Answer: air, water

03. Biotic natural substances

Answer: wool, jute

Q.F) Answer the following.

01. What is humus?

Answer: Humus is the topmost layer of the soil formed d by decomposition of remains of plants and animals and it makes the soil fertile.

02. What do you see on land? 

Answer: We see mountains, rivers, valleys, ocean, also terrestrial animals and plants. We also see roads, bridges, buildings etc.

03. How is the animal kingdom useful to us?

Answer: 

1. Dogs, cats, cows, etc. are domesticated. Dogs and cats are used as pets.
2. Cows, buffaloes, goats, etc. are used for getting their milk.
3. Sheep is used for obtaining wool.
4. Horses, oxen, camels and donkeys are used to carry burden and for various other occupations.
5. Earthworm is useful in agriculture.
6. Birds like hens, turkeys, and ducks provide their eggs to us for food.
7. Insects like bees provide us with honey, silkworm provides us with silk.

04. Why have so many plants and animals been able to survive on the earth even today?

Answer: All the animals and plants have ability to reproduce young ones similar to themselves.

Also they have ability to adjust themselves to the conditions in their surroundings.

Due to this ability we have so many types of plants and animals and they have been able to survive on the earth even today.

05. What are the parts of a plant?

Answer: The parts of a plant are: root, stem, leaves, flowers, fruit and seed.

06. Explain the characteristics of herbs with examples.

Answer: 

1. Herbs grow 1 to 1.5 m tall.
2. Their stem is green and quite flexible.
3. They may live for a few months or upto two years, e.g. Tulsi, oregano, etc.

07. What are the types of disasters?

Answer: Disasters are of two types: Natural disasters and man-made disasters.

08. Which are the main components of disaster management?

Answer: Emergency planning and implementation of disaster management work are the main components of disaster management. Community participation is close, related to disaster management.

09. Name some poisonous snakes.

Answer: Some poisonous snakes are cobras, kraits, vipers and sea snakes.

10. What are the effects of storms?

Answer: 

1. Great damage in the storm affected region.
2. Tremendous losses to life and property.
3. Disruption of electric supply.
4. Disruption of transport and communication.

11. What are the functions of your skin?

Answer: The functions of the skin are :

1. Protects the internal parts of the body like muscles, bones, organ systems etc.
2. Help to preserve the moisture in the body.
3. Synthesizing Vitamin D.
4. Regulates body temperature by releasing sweat.
5. Gives protection from heat and cold.
6. Functions as the sensory organ of touch

12. Why do living things need food and water?

Answer: Living things take food and water and use them for:

1. Obtaining energy
2. Growth of the body
3. Carrying out day to day functions of the body.
4. Fighting against diseases

13. What is obesity? How to avoid obesity?

Answer: Obesity is the state of being overweight. Junk food eaten frequently causes obesity. Obesity is not good for health.

14. Why did the need for man-made materials arise?

Answer: The need for man-made materials arose due to the following reasons:

1. To meet the needs of an increasing population.
2. Human nature to try to make life more comfortable.
3. They can be made available in plenty at a low cost.
4. The reserve of natural substances is decreasing.

15. What are the advantages of synthetic fibre?

Answer: Advantages of synthetic fibre are:

1. These fibres can be manufactured on a large scale.
2. They cost less.
3. They are strong and durable.
4. They can be used for a long time.
5. They are water repellent. They dyy easily.
6. They are light weight and comfortable to wear.
7. Clothes made from these threads are wrinkle free and scratch free.

16. Write a short note on natural rubber.

Answer: 

1. Rubber is a natural substance obtained by collecting the latex of certain trees.
2. The botanical name of this tree is ‘Hevea brasiliensis’
3. In India, the maximum production of rubber is in Kerala.

17. What happens when a substance loses heat?

Answer: When a substance loses heat, it changes its state from gaseous to liquid and liquid to solid state.

Q.G) Write a note on following topics.

01. Floods & It’s effects 

Answer:

1. Floods is a frequently occurring natural disaster in all parts of the world.
2. Due to excessive rains in the same place, a river overflows its banks causing a flood.
3. The water drainage system in big cities falls short when there is heavy rainfall, resulting in choking of gutters and drainage lines.
4. Water overflows on to the roads and surrounding houses.

02. Sublimation

Answer: 

1. The change of a solid substance directly into a gas or vapour without first changing into liquid is called sublimation.
2. Substances that sublimate: Camphor, napthalene balls, ammonium chloride, iodine.

03. Advantages and shortcomings of Synthetic Fibres.

Answer: Advantages of synthetic fibre are:

1. These fibres can be manufactured on a large scale.
2. They cost less.
3. They are strong and durable.
4. They can be used for a long time.
5. They are water repellent. They dyy easily.
6. They are light weight and comfortable to wear.
7. Clothes made from these threads are wrinkle free and scratch free.

Shortcomings of synthetic fibre:

1. They are water repellent. Hence, they do not absorb sweat from the skin.
2. Continuous use of these clothes keeps the skin moist which may cause skin diseases.
3. Synthetic clothes are uncomfortable to wear especially in summer.
4. They catch fire easily.
5. If they catch fire, they stick to the skin and cause skin injuries.
6. These fibres are not decomposed by micro-organisms.