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Can someone send me pic of human digestive system

Posted by Nishma Insulkar 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Samiksha .Sambyal 5 years, 3 months ago

https://live.staticflickr.com/5642/21214195866_6d967a0359_b.jpg

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what is clayey soil?

Posted by Äđiƭɏå Kúmãr 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 3 months ago

Clayey soil has very small sized particles. ... For growing crops such as wheat, gram, and paddy, the soil should be good at retaining water and rich in organic matter is suitable. Therefore, clayey soils having these characteristics are useful for such kind of crops. Clay soils feel very sticky and rolls like plasticine when wet. They can hold more total water than most other soil types and, although only about half of this is available to plants, crops seldom suffer from drought.

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million of second

Posted by Rithika Devi 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Tamanna Garg 5 years, 3 months ago

1 million seconds equal 11 and 1/2 days. 1 billion seconds equal 31 and 3/4 years. 1 trillion seconds equal 31,710 years

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What is meant by reeling, Subject science ,chapter fibre to fabric

Posted by Devyani Parmar 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Devyani Parmar 5 years, 3 months ago

Thank you Aryaan Chauhan

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Devyani Parmar 5 years, 3 months ago

Thank you Aryan raj

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Aryan Raj 5 years, 3 months ago

Reeling of silk is the process of drawing silk fibre from the cocoon.

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Aryan Chauhan 5 years, 3 months ago

Railing is the process by which the Silk fibre are taken out from the Cuccoon and unwound to get long thereads of silk . Than you

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Aarush Soni 5 years, 3 months ago

To make a single thread

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What is the meaning of aerated, retaining, percolation.

Posted by Anshika Kashyap 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 5 years, 3 months ago

Percolation Rate of Water: Amount of water drained through water in unit time is known as percolation rate of water in soil. Percolation rate of water can be calculated using the formula given here.

Percolation rate (mL/min) = Amount of water in mL/Time taken to percolate

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Differentiate between plane,concave and convex

Posted by Lakshita .G 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 5 years, 3 months ago

This can be done easily by studying the nature and size of the image and the relative movement of the mirror with respect to the image:

1. If the image is upright, of the same size as the object and it does not change in size when the mirror is moved, then the mirror is a plane mirror.
2. If the image is upright, magnified and it becomes inverted when the mirror is moved away from the face, then the mirror is a concave mirror.
3. If the image is upright and diminished and it remains upright when the mirror is moved away from the face, then the mirror is a convex mirror.

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Why the rate of transpiration is low at night????

Posted by Sneha Prasad 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Anshul Gothwal 5 years, 3 months ago

What is meaning of efficient

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What is bill

Posted by Piyush Kamal 5 years, 3 months ago

CBSE > Class 07 > Science

2 answers

Piyush Kamal 5 years, 2 months ago

❤❤

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Sakshi Kumari 5 years, 3 months ago

A piece of paper that shows how much money you pay somebody for goods or service.

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What is bill

Posted by Piyush Kamal 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Ritik Kushwaha 5 years, 2 months ago

Bill is that thing on which shopkeepers gives you the information of the things which you have brought.

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Class 7 chapter 1 ka pura solution

Posted by Amresh A.K. 5 years, 3 months ago

CBSE > Class 07 > Science

2 answers

Sarthak Dhawley 5 years, 3 months ago

CBSE Class–VII Science NCERT Solutions CHAPTER-1 NUTRITION IN PLANTS Question 1. Why do organisms need to take food? Answer: Organism needs food to (i) Get energy to do work. (ii) Build body (iii) Repair damage in the body (iv) Maintain the functions of the body Question 2. Distinguish between a parasite and saprophyte. Answer: Parasite Saprotroph The organism that grows on the body of another organism and derives nutrients from it is known as a parasite The organism that obtains nutrients from the dead or decaying organic matter is called saprotroph. They directly feed on living organisms for their nutrition.They feed on dead and decaying organism.They take the readymade food from the host.They take the digested and decayed food.Examples: Cuscuta and orchidsExamples: Fungi and some bacteria. Question 3. How would you test the presence of starch in leaves? Answer: Steps to test the presence of starch in leaves : Step 1: A fresh leaf is taken. Step 2: The leaf is boiled in water for few minutes to kill the cells in the leaf. Step 3: Now, dip this leaf in iodine solution. Step 4: The color of the leaf will changes into blue black color when iodine is added to it which shows the presence of starch in it. Question 4. Give the brief description of the process of synthesis of food in green plants. Answer: Photosynthesis is the process synthesis of food in the plants with the help of chlorophyll and carbon dioxide in the presence of sunlight. Water and minerals present in the soil are absorbed by the roots and transported to the leaves by the vessels. Carbon dioxide from air is taken through stomata present in leaves. Leaves are the food factories of the plants which capture the energy of the sunlight with the help of chlorophyll. This energy is used to synthesize food from carbon dioxide and water. Question 5. Show with the help of a sketch that the plants are ultimate source of food. Answer: Question 6. Fill in the blanks: (a) Green plants are called ----------- since they synthesise their own food. (b) The food synthesised by the plants is stored as ----------------. (c) In photosynthesis solar energy is captured by the pigment called ------------. (d) During photosynthesis plants take in ------------- and release --------------. Answer: Fill in the blanks: (a) Green plants are called autotrophs since they synthesise their own food. (b) The food synthesised by the plants is stored as starch. (c) In photosynthesis solar energy is captured by the pigment called chlorophyll. (d) During photosynthesis plants take in carbon dioxide and release oxygen. Question 7. Name the following: (a) A parasitic plant with yellow, slender and tubular stem. (b) A plant that has both autotrophic and heterotrophic mode of nutrition. (c) The pores through which leaves exchange gases. Answer: (i) Cuscuta (ii) Insectivorous plants (iii) Stomata Question 8. Tick the correct answer: (a) Amarbel is an example of : (i) Autotroph (ii) Parasite (iii) Saprophyte (iv) Host (b) The plant which traps and feeds on insects is: (i) Cuscuta (ii) China rose (iii) Pitcher plant (iv) Rose Answer:(a) (ii) parasite (b) (iii) Pitcher plant Question 9. Match the item in given column I with those in column II. Column I Column II Chlorophyll Bacteria Nitrogen Heterotrophs Amarbel Pitcher plant Animals Leaf Insects Parasite Answer: Column I Column II Chlorophyll Leaf Nitrogen Bacteria Amarbel Parasite Animals Heterotrophs Insects Pitcher plant Question 10. Mark “T” if the statement is true and “F” if it is false: (i) Carbon dioxide is released during photosynthesis. (T/F) (ii) Plants which synthesis their food themselves are called saprotrophs. (T/F) (iii) The product of photosynthesis is not a protein. (T/F) (iv) Solar energy is converted into chemical energy during photosynthesis. (T/F) Answer: (i) F (ii) F (iii) T (iv) T Question 11. Choose the correct option from the following: Which part of plant takes in carbon dioxide from the air for photosynthesis? (i) Root hair (ii) Stomata (iii) Leaf veins (iv) Sepals Answer: (ii) Stomata Question 12. Choose the correct option from the following: Plants take carbon dioxide from the atmosphere mainly through their: (i) Roots (ii) Stem (iii) Flowers (iv) Leaves Answer: (iv) leaves

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Manish Kumar 5 years, 3 months ago

Cvnm

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ANSWER

Digestive system definition

Posted by Rita Singh 5 years, 3 months ago

CBSE > Class 07 > Science

4 answers

Damini Tejwani 5 years, 3 months ago

the system by which ingested food is acted upon by physical and chemical means to provide the body with absorbable nutrients and to excrete waste products; in mammals the system includes the alimentary canal extending from the mouth to the ****, and the hormones and enzymes assisting in digestion.

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Lakshita .G 5 years, 3 months ago

The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion. Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. The process of digestion has three stages. This is known as digestive system

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Abc Xyz 5 years, 3 months ago

The breakdown of complex components of food into simpler substances is known as digestion

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Anushri Rathi 5 years, 3 months ago

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ANSWER

What is meat by conversation

Posted by Pradnesh Kesh3 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Aryan Chauhan 5 years, 3 months ago

To talk between a two or more than two by the body language and expression

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How do elephant living in the tropical rainforest aboard itself

Posted by Anisa Khatun 5 years, 3 months ago

CBSE > Class 07 > Science

2 answers

Anisa Khatun 4 years, 10 months ago

Thank you

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Meghna Thapar 5 years, 1 month ago

Adaptation can be defined as the physical or behavioural characteristic of an organism that helps an organism to survive better in the surrounding environment. All animals adapt a few features for their smooth survival in the residing environment.

Elephant, the huge animal has also adapted a few features to survive in the tropical rain forest. Elephant living in the tropical rainforest are well adapted to this region.

Adaptive Features Adapted by Elephants for Living in the Tropical Rainforest

They have a strong sense of smell and uses its trunk for smell and to hold food.
They also use their trunk to hold food.
They have long ears which help them in keeping cool in hot and humid climate.
Long ears help them in hearing very soft sound.
They have thick padded feet which help them in moving silently.

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ANSWER

Do you know lemon is as sweet as strawberry ? but lemon ? is sour.which kind of acid make it sour ????

Posted by Ujjawal Uniyal 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Javni Ahir 5 years, 3 months ago

Citric acid in lemon. Acetic acid in vinegar.

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Jaspreet Saggu 5 years, 3 months ago

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Shamika Acharya 5 years, 3 months ago

Citric acid

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Muskan Singh 5 years, 3 months ago

Acetic acid

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Muskan Singh 5 years, 3 months ago

Acitic acid

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ANSWER

what is enviroment

Posted by Yuvraj Singh 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Renu Yadav 5 years, 3 months ago

Environment, the complex of physical, chemical, and biotic factors that act upon an organism or an ecological community and ultimately determine its form and survival.

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Chandrika Borah 5 years, 3 months ago

Environment is the surrounding in which we live... For example : water, land, parks, buildings , trees etc.

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Ujjawal Uniyal 5 years, 3 months ago

Relationship between organisms and their surroundings 8s called enviroment

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Niyati Jain 5 years, 3 months ago

Things that are in our surroundings are known as environment . For example - land, water , trees etc.

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Mayra Singh 5 years, 3 months ago

Anything that surrounds our earth is called environment.for ex-plants, animals ,land ,air,and water

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ANSWER

Name the sources of pashmina shawls

Posted by Sabita Deb Nath 5 years, 3 months ago

CBSE > Class 07 > Science

3 answers

Darshil Kewlani 5 years, 3 months ago

The under hair or fur of kashmiri goats

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Shivam Tomar 5 years, 3 months ago

Kashmiri goats are the source of pashimina shawls

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Gaurav Seth 5 years, 3 months ago

The under fur of Kashmiri goat is soft and It is woven into fine shawls called Pashmina shawls. The fur (hair) on the body of camels is also used as wool. Llamaand Alpaca, found in South America,also yield wool.

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What is the role of HCI in digestion system? long definition.

Posted by Saurav Das 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Gaurav Seth 5 years, 3 months ago

The role of HCl is

Hydrochloric acid is an essential acid in the stomach.
It helps destroy bacteria, as well as other harmful species.
It also works as a preservative of food.
HCl converts pepsinogen which is not active into pepsin to metabolize proteins in our stomach.
HCl also acts as another stomach cover apart from mucus, to avoid the pepsin to digesting the entire stomach.

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Which of the following does not yield wool? a. Yak b. Camel c. Goat d. Woolly dog

Posted by Punit Pujar 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Devyani Parmar 5 years, 3 months ago

Wooly dog

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Darshil Kewlani 5 years, 3 months ago

Wooly dog

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Shivam Tomar 5 years, 3 months ago

Ans=woolly dog

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Gautam Kumar 5 years, 3 months ago

Camel

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Punit Pujar 5 years, 3 months ago

d. Woolly dog

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(a).What happened to the following during digestion: (1)starch (2) protein (3)fat (b). What is the fate of this nutrients after digestion ?

Posted by Shivänsh Kumar 5 years, 3 months ago

CBSE > Class 07 > Science

2 answers

Omm Prasad Sahoo 5 years, 3 months ago

Starch

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Ananya Singh 5 years, 3 months ago

Starch

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ANSWER

What is sceince

Posted by Rachit Narang 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Shivam Tomar 5 years, 3 months ago

Science gives us knowledge in systematic way

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Ahana Sharma Vii A 5 years, 3 months ago

Systematicly gain knowledge is called science

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Amar Shep 5 years, 3 months ago

Sorry hi ok xr to I hi so to xxxxxxxxxxxxxxxx I uuhfdtyuhxdtuudr u ut

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Depanshu Singh 5 years, 3 months ago

Sorry bro

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Depanshu Singh 5 years, 3 months ago

HABS7DDDUD DIDHD8DBDD8D D8D D8D DW8W SUD DUE E8EHW7QNWS 722BE 7W 2

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ANSWER

About cell

Posted by Manjinder Gill Gill 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 3 months ago

While examining a thin slice of cork, Robert Hooke saw that the cork resembled the structure of a honeycomb consisting of many little compartments. Cork is a substance which comes from the bark of a tree. In the year 1665, Robert Hooke made this chance observation through a self-designed microscope. Robert Hooke called these boxes cells. Cell is a Latin word for ‘a little room’.

Thus, cells were first discovered by Robert Hooke in 1665. He observed the cells in a cork slice with the help of a primitive microscope. Leeuwenhoek (1674), with the improved microscope, discovered the free living cells in pond water for the first time. Robert Brown in 1831 discovered the nucleus in the cell. Purkinje in 1839 coined the term ‘protoplasm’ for the fluid substance of the cell. The cell theory was presented by two biologists, Schleiden (1838) and Schwann (1839). This theory states that all the plants and animals are composed of cells and that the cell is the basic unit of life. The cell theory was further expanded by Virchow (1855) by suggesting that all cells arise from pre-existing cells.

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Explain about them (1) celcius scale (2) farenheit scale (3) Kelvin scale

Posted by Aanya Gupta 5 years, 3 months ago

CBSE > Class 07 > Science

2 answers

Aanya Gupta 5 years, 3 months ago

I want small answer

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Meghna Thapar 5 years, 3 months ago

The thermometer that measures our body temperature is called clinical thermometer. There are two types of thermometers i.e. clinical and laboratory thermometer. Both are based on the Celsius scale of temperature and both are mercury thermometers.

The Fahrenheit scale of temperature is the common form of temperature measurement used in the United States and some parts of the Caribbean. It was created by the German scientist Daniel Gabriel Fahrenheit in the early 18th century, and adapted its measurements standards from a previous scale created by Ole Roemer.

Water freezes at 32 degrees Fahrenheit, and boils at 212 degrees F. The Fahrenheit temperature scale includes negative temperatures, below 0 degrees F. The coldest possible temperature, absolute zero, is -459.67 degrees F.

The Celsius scale is sometimes referred to as the centigrade scale, because it is based on a 100 degree division between the freezing and boiling points of water: water freezes at 0 degrees Celsius and boils at 100 degrees C. Because of how the boiling and freezing points are arranged, each degree of Fahrenheit is 1.8 times the size of a degree Celsius. Like Fahrenheit, Celsius includes negative temperatures. Absolute zero falls at -273.15 degrees C.

The Kelvin scale was adapted from the Celsius scale in the 19th century by the British scientist William Thompson, later Lord Kelvin. Kelvin was designed in order to set the zero point of the temperature scale at absolute zero. Because of this, absolute zero is located at 0 K – Kelvin does not use degrees in its notation. You can convert from Celsius to Kelvin by adding 273.15 to a Celsius temperature. Water freezes at 273.15 K, and boils at 373.15 K. Because of its direct relation to absolute zero, Kelvin temperature is widely used in scientific equations and calculations. For instance, the ideal gas law, used to show the relationship between mass, pressure, temperature and volume, uses Kelvin as its standard unit.

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Define acidic

Posted by Sanskruti Bhojane 5 years, 3 months ago

CBSE > Class 07 > Science

2 answers

Mayra Singh 5 years, 3 months ago

Acid leterally means sour in taste and came from the word acere whoch means sour in taste,and acid changes blue litmus in red

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Yogita Ingle 5 years, 3 months ago

The substances that taste sour are called acid and their nature is acidic. The term acid is derived from a Latin word acere which means sour. Examples of acidic substances are Curd containing lactic acid, lemon juice and tomato containing citric acid, and vinegar containing acetic acid.

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Define basic

Posted by Sanskruti Bhojane 5 years, 3 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 5 years, 3 months ago

The substances that taste bitter are called base and their nature is basic. They are slippery to touch. Example: baking soda containing sodium hydrogen carbonate, Milk of magnesia, Soaps, Lime water containing calcium hydroxide, Household cleaners.

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ANSWER

What is the role HCI in human digestion

Posted by Saurav Das 5 years, 3 months ago

CBSE > Class 07 > Science

4 answers

Saurav Das 5 years, 3 months ago

Thanks but can you give a long definition

1Thank You

Ananya Singh 5 years, 3 months ago

HCI means hydrochloric acid.Hydrochloric acid is present in our stomach.It is very dangerous acid.It is essential acid in stomach.Hydrochloric acid kills bacteria which is present in our stomach.

1Thank You

Omm Prasad Sahoo 5 years, 3 months ago

HCL IS A CHEMICAL PRESENT IN OUR STOMACH, THE FILL FORM OF HCL IS HYDROCHLORIC ACID. I HOPE I AM NOT WRONG.

2Thank You

Ritisha Sharma 5 years, 3 months ago

HCL IS A CHEMICAL PRESENT IN OUR STOMACH, THE FILL FORM OF HCL IS HYDROCHLORIC ACID. I HOPE I AM NOT WRONG.

2Thank You

ANSWER

Why do lime water turn milky in passing carbon dioxide from it

Posted by Vijeta Dahiya 5 years, 3 months ago

CBSE > Class 07 > Science

3 answers

Shivam Tomar 5 years, 3 months ago

Because due to formation of calcium carbonate

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Omm Prasad Sahoo 5 years, 3 months ago

1.This is because of the formation of white coloured insoluble calcium carbonate which is milky. 2.Carbon dioxide is evolved due to the chemical reaction between acetic acid and sodium hydrogencarbonate.

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Yogita Ingle 5 years, 3 months ago

This is because of the formation of white coloured insoluble calcium carbonate which is milky.
Carbon dioxide is evolved due to the chemical reaction between acetic acid and sodium hydrogencarbonate.

1Thank You

ANSWER

What are physical change

Posted by Dimpal Dudhabale 5 years, 3 months ago

CBSE > Class 07 > Science

5 answers

Darshil Kewlani 5 years, 3 months ago

In which no new substance is formed is called physical change

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Shivam Tomar 5 years, 3 months ago

The change that can be reversed is called physical change

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Omm Prasad Sahoo 5 years, 3 months ago

Physical Changes Physical Properties of a substance are those characteristic of a substance that describes its physical nature. For Example colour, density, shape, size and volume are some physical properties. Physical Change is a change which occurs when there is an alteration in the physical properties of a substance. The physical change does not result in the formation of any new substance but can alter the shape and size of the existing substance.

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Yogita Ingle 5 years, 3 months ago

Physical Changes

Physical Properties of a substance are those characteristic of a substance that describes its physical nature.
For Example colour, density, shape, size and volume are some physical properties.
Physical Change is a change which occurs when there is an alteration in the physical properties of a substance.
The physical change does not result in the formation of any new substance but can alter the shape and size of the existing substance.