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Rings of cartilage are present in throat give reason

Posted by Surender Mola 5 years, 8 months ago

1 answers

Yogita Ingle 5 years, 8 months ago

Rings of cartilage are present in the throat as it helps the throat from collapsing when there is a low amount of air present.

It also helps them to expand when food or water passes through it.

Thus it plays an important role in supporting the throat during air blockage and helps in smooth air flow.

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Give reason fine hairs and muscle prevents in nasal passage

Posted by Surender Mola 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Tarushi Jaipuria 5 years, 8 months ago

Fine hair and mucus act as the first line of defense in the nasal passage. They keep foreign particles that could cause illness from entering the body. The hairs (cilia) and mucus along the nasal cavity are responsible for trapping dust and other particles in the air you inhale and sweeping it out again

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What is the function of trachea why do the wall do not collapse even when there is less air in it

Posted by Surender Mola 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 8 months ago

The cartilage provides support to the trachea which does not collapse even when there is less air in it.

The trachea or the windpipe is a cartilaginous cylinder that interfaces the pharynx and larynx to the lungs, permitting the entry of air, as is available in practically all air-breathing creatures with lungs.

The trachea reaches out from the larynx and branches into the two essential bronchi. At the top of the trachea, a completed ring of cartilage is located, which protects it from getting damaged or collapsed when the flow of air is inadequate.

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How are lungs designed in human beings to maximize the area for exchange of gases

Posted by Surender Mola 5 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Tarushi Jaipuria 5 years, 8 months ago

The alveoli provide a surface where the exchange of gases can take place. ... The walls of the alveoli are supplied with an extensive network of blood vessels. So lungs maximise the area for gaseous exchange through the presence of large number of alveoli which are richly supplied with blood

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(◍•ᴗ•◍)❤ . 5 years, 8 months ago

With the help of alveoli

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What advantage does a terrestrial organism possesses over aquatic organism with regard to obtaining energy for respiration

Posted by Surender Mola 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Sandli Thakur✍?✍?(Helping Hand)? 5 years, 8 months ago

terrestrial organisms have a advantage over aquatic organisms . 1. The terrestrial organism gets more oxygen as they get oxygen from the atmosphere which has high amount of oxygen. The quantity of oxygen is low in water, so the aquatic organisms gets less oxygen then the terrestrial ones

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Why is diffusion sufficient of meet the oxygen requirement of multicellular organism like us

Posted by Surender Mola 5 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Sandli Thakur✍?✍?(Helping Hand)? 5 years, 8 months ago

diffusion can not meet the requirement of multicellular organism like us because every cell is not exposed to oxygen containing environment.in our body there are millions of cells. in order to pass through diffusion it has to pass through all the cells and estimated about 3 yrs for oxygen to reach toes through diffusion. So multicellular organism have transport system which transport oxygen all cells within a minute....

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Sandli Thakur✍?✍?(Helping Hand)? 5 years, 8 months ago

its insufficient.....

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Even when we are not doing appearant activity we need energy justify giving reason

Posted by Surender Mola 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Tarushi Jaipuria 5 years, 8 months ago

Even when we are not doing any apparent activity we need energy. ... we need energy even if we're not doing apparent activities because the internal part like heart, respiratory organ is always working. it requires energy to work. therefore we need energy always even we're sleeping.

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When we breathe out the air passage doesn't collapse why

Posted by Surender Mola 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 8 months ago

The trachea or the windpipe connects the pharynx and larynx to our lungs.

This allows air to pass in and out of the lungs.

As the trachea is made of cartilaginous rings which are of C shape, it prevents the air passage not to collapse when we breathe out air.

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Why do metal conduct electricity ?

Posted by Avani Singh 5 years, 8 months ago

CBSE > Class 10 > Science

3 answers

Paritosh Suman 5 years, 8 months ago

Due to free electrons

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Lucifer ? Morningstar? 5 years, 8 months ago

Because they have free electrons

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Yogita Ingle 5 years, 8 months ago

Metals conduct electricity because the electrons inside the metal are relatively free to move.
So when electricity is through metals, electrons carry electricity and spread it all over the metal.
The mobility of electrons is the reason why metals conduct electricity.

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What is the advantage of terristrial organism in respiration than aquatic animals?

Posted by Pratham Patel 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

_Sandli ? 5 years, 8 months ago

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Why translation is essential for plants body

Posted by Suresh Gupta 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 8 months ago

The transport of soluble products of photosynthesis is known as translocation. Translocation in plants occurs by means of the vascular tissue known as phloem. Translocation is necessary because without it, the food prepared by the leaves cannot reach other parts of the plant. In plants, the synthesis of sugars takes place in the leaves by the process of photosynthesis. Hormones are synthesised away from their target site.

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What is the difference between covid19 and coronavirus❓

Posted by ? ????? ?????? ? 5 years, 8 months ago

CBSE > Class 10 > Science

5 answers

Paritosh Suman 5 years, 8 months ago

No difference because the full form of covid 19 is corona virus disease 2019

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Diksha? 5 years, 8 months ago

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Kancha Bala Sahu 5 years, 8 months ago

Covid 19 is a virus which spread in november 17,2019 and corona virus is spread in 2003 and 8,000 people died in all over the world

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? ????? ?????? ? 5 years, 8 months ago

Thanks ?

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Lucifer ? Morningstar? 5 years, 8 months ago

Corona is a virus but covid 19 is disease spread by this virus

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State ohm's law ? Explain it with graphically?

Posted by Siddhant Singh 5 years, 8 months ago

CBSE > Class 10 > Science

3 answers

Shakuntla Malik 5 years, 8 months ago

Source of energy chapter

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Angell Tripathi 5 years, 8 months ago

The relation between current flowing in a metallic wire and the potential difference across its terminal......

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Lucifer ? Morningstar? 5 years, 8 months ago

Ohm’s law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and directly proportional to the resistance of the circuit

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Methods for prevention from corrosion

Posted by Anjali Panghal 5 years, 8 months ago

CBSE > Class 10 > Science

2 answers

_Sandli ? 5 years, 8 months ago

1. By coating surface with paint. 2.by application of oil or grease. 3.by covering their surface with more reactive element which prevent oxidation.this process is called galvanization. 4.corrosion of some metal can be prevented by converting into alloys.

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Arjun Kashyap 5 years, 8 months ago

Galvanization, painting etc

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Which guide is best for science

Posted by Aditya Verma 5 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Kancha Bala Sahu 5 years, 8 months ago

I think full marks,golden or u-like

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Angell Tripathi 5 years, 8 months ago

I thik X'am guid is best guid

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What are the different life process ? Name them and define them.

Posted by Khushi Paliwal 5 years, 8 months ago

CBSE > Class 10 > Science

2 answers

_Sandli ? 5 years, 8 months ago

1.respiration: breakdown of food using oxygen to get energy...2.excretion: process of removal of waste from the body...3.movement: changing of position from one place to another....4.nutrition: process of obtaining food and utilizing it. ....5.digestion: process of breakdown of complex food into simple soluble food.....

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Lucifer ? Morningstar? 5 years, 8 months ago

Respiration,movement, nutrition, digestion, excretion, reproduction

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4 + ( 2+3×10 ) + 6 ×2 =???

Posted by ? ????? ?????? ? 5 years, 8 months ago

CBSE > Class 10 > Science

5 answers

Jasmeen Kaur 5 years, 8 months ago

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... ... 5 years, 8 months ago

48 is the correct answer ?

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Kamatchi M 5 years, 8 months ago

302

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? ????? ?????? ? 5 years, 8 months ago

Thanks

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Lucifer ? Morningstar? 5 years, 8 months ago

1Thank You

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Balanced equation of FEO2+O2+H2O=FE2O3

Posted by Asma Khatun 5 years, 8 months ago

CBSE > Class 10 > Science

0 answers

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How can be detect that 'how long ago it alive' with the help of fossils

Posted by Lucifer ? Morningstar? 5 years, 8 months ago

CBSE > Class 10 > Science

0 answers

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Sorry...for this pic....ye last h ???
<a href="https://ibb.co/2Wx3Tr1">

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Posted by ... ... 5 years, 8 months ago

CBSE > Class 10 > Science

0 answers

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Who z father of zoology

Posted by Syed Hilal Shah 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Lucifer ? Morningstar? 5 years, 8 months ago

Aristotle

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</a>
<a target='_blank' href='https://imgbb.com/'>how to download all pictures from facebook</a>

Posted by ... ... 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Arjun Kashyap 5 years, 8 months ago

ग़ज़ब

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Respiratory

Posted by Suman Kumar 5 years, 8 months ago

CBSE > Class 10 > Science

0 answers

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How can we know that a incident ray is at normal to a spherical mirror?

Posted by Akash Choudhary 5 years, 8 months ago

CBSE > Class 10 > Science

0 answers

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An object is placed at a distance of 30 cm in front of convex mirror of focal length 15 cm. Written four characteristics of the image formed by the mirrors.

Posted by Hennah R 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Arjun Kashyap 5 years, 8 months ago

Nature = virtual and erect, position=30 cm and same size

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How would it effect the digestion if pancreas and small intestine were absent in our body

Posted by Suresh Gupta 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 6 months ago

Digestion of carbohydrates, fats and proteins:

(i) Carbohydrates - The digestion of carbohydrates begins in the mouth. The human saliva contains an enzyme called salivary amylase which digests the starch present in the food into maltose sugar. The slightly digested carbohydrates when reaches the small intestine, pancreatic amylase present in the pancreatic juice breaks down the starch. The intestinal juice of the small intestine completes the digestion of carbohydrates and finally coverts it into glucose.

(ii) Fats - The process of digestion of fats begins in the stomach. The glands of stomach secrete a small amount of gastric lipase that breaks down the fats present in the food. From the stomach the partially digested food goes into small intestine where the pancreatic lipase breaks down the emulsified fats. The walls of small intestine secrete intestinal juice which converts the fats into fatty acids and glycerol.

(iii) Proteins - The digestion of proteins begins in the stomach. The glands of the stomach secrete gastric juice which contains an enzyme called pepsin. Pepsin converts the proteins into peptones. Pancreatic juice contains trypsin which digests the proteins into peptides and the intestinal juice completes the process of digestion of proteins thus converting it into amino acids.

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Neutralization

Posted by Ayush Mishra 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Lucifer ? Morningstar? 5 years, 8 months ago

In chemistry, neutralization or neutralisation (see spelling differences) is a chemical reaction in which an acid and a base react quantitatively with each other.

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Why is diffusion insufficient to meet the oxygen requirements of multi cellular organisms like humans

Posted by Rathor Natwarshig 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Lucifer ? Morningstar? 5 years, 8 months ago

Diffusion is insufficient to meet the oxygen requirement of multicellular organisms like human because all the cells are not direct contact in environment and diffusion is a slow process. Diffusion is too slow to cover the distance between the gas exchange surface and the sites where the oxygen is required.

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Balance the atom which is the maximum in number on either side of chemical equation

Posted by Sahil Kumar 5 years, 8 months ago

CBSE > Class 10 > Science