CBSE > Class 07 > Science | CBSE Board | Homework Help

Xylem is the vessels like structures in the plants' stem it transport water and mineral to all parts of the plant. It runs through out the plants' bodies.

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Yogita Ingle 5 years, 3 months ago

The transportation of water and dissolved mineral salts, from the root to stem, leaves, flowers and other parts of the plant takes place through xylem.

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Aayush Raj 5 years, 3 months ago

Xylem is the vessels which transport water and mineral

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Charuvrat Rawat 5 years, 3 months ago

Hear

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ANSWER

Explain about the rearing and breeding of sheep?

Posted by Sunil Patil 5 years, 3 months ago

CBSE > Class 07 > Science

3 answers

Omm Prasad Sahoo ??? 5 years, 3 months ago

Rearing of sheep means to look after the sheep by providing them food, shelter and health care. Breeding is done to obtain animals with desired characters . the two individuals of desirable character can be selected as parents. these are then crossed [ made to reproduce ] to obtain new breed of the animals having desirable characters of both parents . this is called selective breeding.

2Thank You

Yogita Ingle 5 years, 3 months ago

Rearing of sheep means to look after the sheep by providing them food, shelter and health care.

Breeding is done to obtain animals with desired characters . the two individuals of desirable character can be selected as parents. these are then crossed [ made to reproduce ] to obtain new breed of the animals having desirable characters of both parents . this is called selective breeding.

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Khushi Patil 5 years, 3 months ago

Selective breeding is a method that has been practice for many hundreds of years to get plants or animals with desired characteristics.

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ANSWER

Chemical equation for photosynthesis

Posted by Jay And Jiya Patel 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Omm Prasad Sahoo ??? 5 years, 3 months ago

The formula is 6CO2+6H2O = C6H12O6 + 6O2

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Gaurika Balha 5 years, 3 months ago

Check out best answer in your book.

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Srinidhi Reddy 5 years, 3 months ago

The formula is 6CO2+6H2O = C6H12O6 + 6O2

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Rigan Singh 5 years, 3 months ago

Physics

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Aanya Gupta 5 years, 3 months ago

6CO2 + 6H2O → C6H12O6 + 6O2

3Thank You

ANSWER

Why do lichens disappear from the polluted areas ?

Posted by Bharat Pratap Singh 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 2 months ago

Lichens have no vascular system for conducting water or nutrients; as a consequence, they have developed efficient mechanisms for taking up water and nutrients from atmospheric sources. ... Unlike many vascular plants, lichens have no deciduous parts, and hence cannot avoid pollutant exposure by shedding such parts. Lichens do not have roots; instead they receive all their nutrients from the atmosphere. Lichens are sensitive to atmospheric pollution such as nitrogen (N) because they receive all their nutrients and water from wet and dry atmospheric deposition (fall out). Nitrogen deposition can increase the load of nutrients.

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Are you all on Instagram Pls tell your ids

Posted by Avni ? 4 years, 10 months ago

CBSE > Class 07 > Science

3 answers

Gaurika Balha 5 years, 3 months ago

Please study here only.

1Thank You

Ipshita Pradhan 5 years, 3 months ago

Ipshita pradhan

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Bharat Pratap Singh 5 years, 3 months ago

HarshVardhan@

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ANSWER

When candle burns both physical एंड केमिकल change give another example of familier process in which both the chemical एंड physical change

Posted by Vansh Bhiyana 5 years, 3 months ago

CBSE > Class 07 > Science

2 answers

Samiksha .Sambyal 5 years, 3 months ago

Eating food is also an example of both physical and chemical change.... Physical change : breaking down of larger food particles onto smaller ones.... chemical change : digestion of food

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Bharat Pratap Singh 5 years, 3 months ago

Burning of wood is an another example of both physical and chemical change .

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ANSWER

The hotness bodies of an object is determined by it ______

Posted by Tulesh Sunani 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Ayush Nama. 5 years, 3 months ago

Temperature which can be measured by a clinical thermometer

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Bharat Pratap Singh 5 years, 3 months ago

Temperature

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Jay And Jiya Patel 5 years, 3 months ago

Temperature, and temperature can be measure by thermometer

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Mansi Gupta 5 years, 3 months ago

Temperature

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Unknown Students 5 years, 3 months ago

Temperature

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ANSWER

What is nutrient, give example ?

Posted by Divya Jha 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Jay And Jiya Patel 5 years, 3 months ago

Nutrients are components of food ??? that gives us energy help in growth or in repairing damage cells or parts and nutrients are of different types are 1 fats 2 carbohydrates 3 minerals 4 vitamins. Etc...

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Srinidhi Reddy 5 years, 3 months ago

Nutrients are the components of food which gives us energy, repairs damaged cells, and help in growth etc. The example for nutrients are 1) vitamins 2) minerals 3) fats 4) carbohydrates 5) proteins 6) roughage 7) water

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Swastika Gupta 5 years, 3 months ago

A process by which organisms take in food and wtilize it in order to survive

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Moinak Bhattacharya 5 years, 3 months ago

Nutrients are the components of food which help us to grow

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Akshita Yadav 5 years, 3 months ago

Nutrients are the components of food which help us in body growth , for heel our wounds etc . Nutrients are 1)carbohydrates 2)protiens 3)fats 4)vitamins 5)minerals 6)water and roughage

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ANSWER

Do colourful leaves have chlorophyll ?

Posted by Himani Chauhan 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Affan Affan 5 years, 3 months ago

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Divya Jha 5 years, 3 months ago

Yes

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Sehajvir Singh 5 years, 3 months ago

Yes ofcourse

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꧁༺Harsh༻꧂ Yt 5 years, 3 months ago

Chlorophyll is one type of pigment that is part of the machinery of photosynthesis, but there are other pigments that are other colors that can do photosynthesis too. In fact, even leaves that look green have other pigments in them.

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Mamta Kumar 5 years, 3 months ago

Yes colourfull leaves have chlorophyll as they contain other color pigment more than green so they appear colourfull in color

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ANSWER

Give the brief description of the process of synthesis of food in green plants

Posted by Menaka Devi Yadav 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Menaka Devi Yadav 5 years, 3 months ago

Photosynthesis is the process synthesis of food in the plants with the help cholorophyll and carbon dioxide in the presence of sunlight

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ANSWER

Explain nutrition in plants chapter in short.

Posted by Sai Kokil 5 years, 3 months ago

CBSE > Class 07 > Science

2 answers

Jay And Jiya Patel 5 years, 3 months ago

The process of taking food and utilized by our body is called nutrition

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Merin Alex 5 years, 3 months ago

The process of obtaining food and utilizing it to grow, stay healthy and repair any damaged body part is known as nutrition. Plants produce their food by taking raw materials from their surroundings, such as minerals, carbon dioxide, water, and sunlight.

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ANSWER

Explain sea breeze and land breeze in detail

Posted by Deep Anbhule 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Aryan Raj 5 years, 3 months ago

During day land becomes hot faster than the sea . So the warm air above land rises and cool air from sea take its place . Warm air moves toward sea to complete the cycle . This is called sea breeze . Land breeze is opposite of sea breeze . During night land cools faster than the sea . Warm air above sea rises and cool air above land take its place . Warm air move towards land to complete the cycle . This is called land breeze.

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ANSWER

Which is the holy book of Muslims

Posted by Sriya Misra 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Sai Kokil 5 years, 3 months ago

Quran

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Aryan Raj 5 years, 3 months ago

Quran

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Anushri Rathi 5 years, 3 months ago

Quran.

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Aaryan Kumar Sharma 5 years, 3 months ago

Quran obesli

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Aditya Dash 5 years, 3 months ago

Quran

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ANSWER

Longer line in the symbol for a cell represent it's what terminal???

Posted by Sriya Misra 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Himani Chauhan 5 years, 3 months ago

Positive terminal

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Aryan Raj 5 years, 3 months ago

the symbol of the electric cell, the longer line represents the positive terminal and the thicker,

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Aaryan Kumar Sharma 5 years, 3 months ago

Negative terminal

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Aditya Dash 5 years, 3 months ago

Position terminal

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Yogita Ingle 5 years, 3 months ago

Longer line in the symbol for a cell represents its positive terminal.

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ANSWER

Discuss the harmful effect of deforestation

Posted by Shubh Saxena 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Ishan Verma 5 years, 3 months ago

There will be difficulty in breathing

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Srinidhi Reddy 5 years, 3 months ago

It may lead to soil erosion, global warming, drought, and it may also effect to the environment!!???

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Sai Kokil 5 years, 3 months ago

There will be difficulty in breathing

1Thank You

Aryan Raj 5 years, 3 months ago

The loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere, and a host of problems for indigenous people.

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Yogita Ingle 5 years, 3 months ago

Global warming: Due to deforestation there is an increase in quantity of carbon dioxide, thereby, increasing the temperature of earth. This is known as global warming. Moreover, it causes harmful effects of skin burning, melting of polar ice caps, increase of seawater level, floods thereby submerging the coastal areas.
Drought: Increase in temperature disturbs the water cycle . Therefore it causes less rainfall. thus, this condition of less rainfall causes drought i.e. condition when there is no water for crop as well as drinking
Flood: Trees increases water holding capacity of soil. Moreover, it helps to increase ground water level. Because of deforestation, water cannot be hold for in the ground and so flow of water from the ground surface reduces. Thereby, lowering ground water level. This also increases level of water in the river. If river fails to hold the increase in waterlevel it brings flood.
Soil erosion and desertification: Roots of trees holds the top layer of the soil. Because of deforestation top layer of the soil is removed by water or wind. This is known as soil erosion. This causes change in nutrient content, texture, which gradually converts land into desert
Loss of biodiversity: Forest provides shelter to various plants and animals . By cutting plants humans are disturbing their habitat. Due to which life of such plants and animals are in threat.

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ANSWER

How can hard water convert io soft water

Posted by Shubh Saxena 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Aaryan Kumar Sharma 5 years, 3 months ago

Boil the water

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ANSWER

Write a chemical equation, names of the reactants and products involved in them

Posted by Ravi Singh 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Aryan Raj 5 years, 3 months ago

A chemical equation describes a chemical reaction. Reactants are starting materials and are written on the left-hand side of the equation. Products are the end-result of the reaction and are written on the right-hand side of the equation.

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ANSWER

Uii

Posted by Ha Ha Padu. 5 years, 3 months ago

CBSE > Class 07 > Science

2 answers

Bharat Pratap Singh 5 years, 3 months ago

Umbrella ☔ ice igloo

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Merin Alex 5 years, 3 months ago

United india insurance - full form.

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ANSWER

The angle of incidence equals the angle between the incident raw and the

Posted by Himanshu Kumar 5 years, 3 months ago

CBSE > Class 07 > Science

3 answers

Shubh Saxena 5 years, 3 months ago

The angle formed between the normal and the incident ray at the point of incidence is called the angle of incidence. Similarly, the angle formed between the normal and the reflected ray at the point of incidence is called the angle of reflection.

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Margi Mishra 5 years, 3 months ago

What is photosenthysis?

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Yogita Ingle 5 years, 3 months ago

The incident ray and reflected ray form two angles at the point of incidence:

The angle formed between the normal and the incident ray at the point of incidence is called the angle of incidence.
Similarly, the angle formed between the normal and the reflected ray at the point of incidence is called the angle of reflection.

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ANSWER

Define rusting of iron?

Posted by Poonam Yadav 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Vanshika Upmanyu 5 years, 3 months ago

When iron comes in contact with oxygen and water, it reacts amd form a red colored substance called rust, this process is called rusting of iron

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Aryan Raj 5 years, 3 months ago

Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.

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Shubh Saxena 5 years, 3 months ago

Rusting of iron refers to the formation of rust, a mixture of iron oxides, on the surface of iron objects or structures. This rust is formed from a redox reaction between oxygen and iron in an environment containing water (such as air containing high levels of moisture). The rusting of iron is characterized by the formation of a layer of a red, flaky substance that easily crumbles into a powder.

1Thank You

Yogita Ingle 5 years, 3 months ago

Rusting of iron refers to the formation of rust, a mixture of iron oxides, on the surface of iron objects or structures. This rust is formed from a redox reaction between oxygen and iron in an environment containing water (such as air containing high levels of moisture). The rusting of iron is characterized by the formation of a layer of a red, flaky substance that easily crumbles into a powder.

1Thank You

Hans Kumar 5 years, 3 months ago

When air(moisture) and water both are with iron this is how rusting of iron are formed

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ANSWER

Chapter = time and motion full explain in hindi

Posted by Nishika Yadav 5 years, 3 months ago

CBSE > Class 07 > Science

3 answers

Nishika Yadav 5 years, 2 months ago

Motion detect change our and my body ok for all

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Anshuman Kumar 5 years, 3 months ago

Asffx

3Thank You

Nishika Yadav 5 years, 3 months ago

1Thank You

ANSWER

Plant synthesis food component rather than carbohydrates

Posted by Shaira Noor 5 years, 3 months ago

CBSE > Class 07 > Science

3 answers

• _ • 5 years, 3 months ago

True

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Poonam Yadav 5 years, 3 months ago

True

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Shaira Noor 5 years, 3 months ago

Fgg

3Thank You

ANSWER

What are the four chambers of cows stomach

Posted by Aftab Hussain 5 years, 3 months ago

CBSE > Class 07 > Science

3 answers

Shubh Saxena 5 years, 3 months ago

As mentioned earlier, the stomach of these Ruminants is divided into 4 chambers – rumen, reticulum, omasum, and the abomasum

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Shaira Noor 5 years, 3 months ago

How plants synthesis food compenent rather than carbohydrate

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Yogita Ingle 5 years, 3 months ago

As mentioned earlier, the stomach of these Ruminants is divided into 4 chambers – rumen, reticulum, omasum, and the abomasum.

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ANSWER

Which of the following metals have highest melting point?

Posted by Aryan Raj 5 years, 3 months ago

CBSE > Class 07 > Science

3 answers

Shubh Saxena 5 years, 3 months ago

Tungsten has the highest melting point of 3422o C

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Aryan Lohiya 5 years, 3 months ago

Tungsten at 3422 degree Celsius

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Yogita Ingle 5 years, 3 months ago

Tungsten has the highest melting point of 3422^o C

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ANSWER

Iron+air+water gives

Posted by Sriya Misra 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Ishita Jain 5 years, 3 months ago

The rusting process will begin

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Nivedya?? Manoj 5 years, 3 months ago

The process of rusting will occur

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Aryan Lohiya 5 years, 3 months ago

Iron metal reacts in moist air by oxidation to give a hydrated iron oxide. This does not protect the iron surface to further reaction since it flakes off, exposing more iron metal to oxidation. This process is called rusting and is familiar to any car owner.

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Aryan Raj 5 years, 3 months ago

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Parth Dotasra 5 years, 3 months ago

Rusting will happen

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ANSWER

Preventing to rusting which process is required???

Posted by Sriya Misra 5 years, 3 months ago

CBSE > Class 07 > Science

4 answers

#Mrunmayee# Bawankar 5 years, 3 months ago

Galvanizing, painting, applying grease can be done to prevent rusting

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Aryan Lohiya 5 years, 3 months ago

Galvanizing,painting,applying grease can be done to prevent rusting

0Thank You

Aryan Raj 5 years, 3 months ago

Galvanizing,painting,applying grease can be done to prevent rusting

0Thank You

Parth Dotasra 5 years, 3 months ago

Galvanizing, painting, applying grease

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ANSWER

(copper sulphate + iron) on reaction gives???

Posted by Sriya Misra 5 years, 3 months ago

CBSE > Class 07 > Science

2 answers

Aryan Lohiya 5 years, 3 months ago

Iron displaces copper ions from an aqueous solution of copper sulphate.

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Aryan Raj 5 years, 3 months ago

Iron displaces copper ions from an aqueous solution of copper sulphate. It is a single displacement reaction of one metal by another metal. ... Thus iron is more reactive than copper. In this reaction, metallic iron is converted into ferrous ion (Fe2+) and cupric ion (Cu2 +) is converted into metallic copper.

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ANSWER

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