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RESPIRATION is the overall process by which organisms oxidise food to release energy. In most plants, AEROBIC respiration takes place. The respiratory gases are exchanged through the stomata, tiny pores on the lower part of a leaf. The oxygen is then taken to plant cells where glucose is oxidised to produce energy in the mitochondria.

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Difference between simple and complex tissues

Posted by Aakriti Rustagi 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 4 years, 9 months ago

Tissues made of more than one type of cell are collectively known by the term complex tissues. Eg :- Xylem and Phloem. Tissues made of single type of cell are called simple tissues. Eg :- Parenchyma, Sclerenchyma, meristems, etc.

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Product of chloralkali process

Posted by Vaibhav Gupta 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Dilip Choudhary 4 years, 9 months ago

When electricity is passed through an aqueous solution of sodium chloride it decomposes to form sodium hydroxide . This process is called chlor alkali process in which chlor stands for chlorine and alkali stands for sodium hydroxide . 2NaCl + 2H2O = 2NaOH + Cl2 + H2

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Ch-8 all mcq

Posted by Urmila Yadav 4 years, 9 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

"Damage to the ozone layer is a cause of concern." Justify this statement. Suggest any two steps to limit this damage.

Posted by Khushi 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Ff_Girl Tannu 4 years, 9 months ago

Cause of concern: Ozone layer present in the stratosphere has thinned out by about 18 % over the equator and more so over the Antartica where a big ozone hole appears every year. This has increased the level of UV-B radiations reaching the earth by 15-20%. These radiations are causing increased number of skin cancers,cataracts and reduced immunity in human beings. There is increased incidence of blinding of animals ,death of young ones, reduced photosynthesis, higher number of mutations an damage to arteries. Steps to limit damage: (i) Dispose of pre-1995 refrigerators, freezers, and air conditioning units properly. (ii) Ban on production and use of chloroflurocarbons.

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ANSWER

How can we understand the colour of that solution

Posted by Rahul Gupta 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Ff_Girl Tannu 4 years, 9 months ago

Which Solution yrr ??

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ANSWER

The decomposers in an ecosystem convert dash

Posted by Kavipriya Kavipriya 4 years, 9 months ago

CBSE > Class 10 > Science

3 answers

Krishna Gupta Gupta 4 years, 9 months ago

Saprotroph, organism that feeds on nonliving organic matter known as detritus at a ... The enzymes convert the detritus into simpler molecules, which are then ... saprotrophic fungi are to a large extent responsible for the decomposition of.

1Thank You

Siya Singh 4 years, 9 months ago

Biodegradable waste

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Adithya Dev A 4 years, 9 months ago

Large complex molecules in dead decaying matter into simpler forms by which they can be utilized by green plants.

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ANSWER

Why is the importance of DNA copying in reproduction

Posted by Rayyan Ahmad 4 years, 9 months ago

CBSE > Class 10 > Science

5 answers

Khushi Pandey 4 years, 9 months ago

DNA contains all genetical information which needed to be transferred from parents to their offspring.

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Adithya Dev A 4 years, 9 months ago

DNA copying is considered to be very important in reproduction as it ensures that traits get transferred from parents to offsprings. Small inaccuracies in this process lead to formation of variations which, if hand in hand with constantly changing environment, enhances survival rate of the organism and also form the basis for evolution.

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Krishna Gupta Gupta 4 years, 9 months ago

DNA copying is essential part of reproduction because it ensures that same blue print of the body design is maintained. Variation for the species is beneficial for adaptation and better survival.

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Siya Singh 4 years, 9 months ago

Because it leads to variation

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Kavipriya Kavipriya 4 years, 9 months ago

DNA copying is essential part of reproduction because it ensures that same blue print of the body design is maintained.

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ANSWER

What is meant by catanation.

Posted by Sudhir Kumar 4 years, 9 months ago

CBSE > Class 10 > Science

5 answers

Adithya Dev A 4 years, 9 months ago

Carbon atoms possess the unique ability to combine with other atoms of the same element to form single long chains of different shapes, lengths and sizes. The unique electronic configuration and small size of a carbon atom makes the C-C bonds the strongest.

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Kashish Ramnani 4 years, 9 months ago

The process of self linking of carbon known as catenation

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Sudhir Kumar 4 years, 9 months ago

Thanks

1Thank You

Dhananjay Gautam 4 years, 9 months ago

Property of making long chain by direct bonding in same element. For ex- Carbon, Silicon

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Shreya Gupta 4 years, 9 months ago

Catenation is a property of an atom that enables it to form large number of chains to form different atoms that are stable . Carbon exhibits the property of Catenation

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ANSWER

Write about sign convention in Electricity

Posted by Duvarakesh K 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Sudhir Kumar 4 years, 9 months ago

I think it is the property that shows us in which direction the current is flowing.

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ANSWER

What are the various ways in which a chemical equation can be made more information? Give example to illustration your answer.

Posted by Kashish Garg 4 years, 9 months ago

CBSE > Class 10 > Science

5 answers

Anurag Singh 4 years, 9 months ago

By indicating physical state

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Adithya Dev A 4 years, 9 months ago

1) By showing physical states. (Solid=s, liquid=l, gas=g, aqueous=aq). 2) Reaction conditions and catalysts (above and below the arrow) 3) Evolution of gas (Upward arrow) and formation of precipitate (Downward arrow). 4) Whether there is a temperature or if there is release or absorption of heat (where heat is delta or Δ)

0Thank You

Siya Singh 4 years, 9 months ago

By indicating physical states for example: (l), (s), (aq), and (g)

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Kodaparthi Gangothri 4 years, 9 months ago

By showing them with their formula

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Duvarakesh K 4 years, 9 months ago

*By indicating their Physical state. *By indicating the heat changes taking place in the reaction . *By indicating the condition under which the reaction takes place

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From which letter Magnetic field is represented

Posted by Aditya Kashyap 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Kashish Ramnani 4 years, 9 months ago

'B'

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Kashish Kumari 4 years, 9 months ago

Letter 'B'

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ANSWER

Define traid?

Posted by Akash Kumar 4 years, 9 months ago

CBSE > Class 10 > Science

4 answers

Smruti Rekha Sahoo 4 years, 9 months ago

The arrangement of elements in which the atomic mass of middle element is almost the mean of atomic masses of first and third elements is known as triads

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Simmi Fagna 4 years, 9 months ago

A group of three people or thing that are connected with each other.

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Sudhir Kumar 4 years, 9 months ago

A group of three closely related compound or elements

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Ayesha 6213 4 years, 9 months ago

Three

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In human beings the process of

Posted by Basavaraj Sindagi 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Shreya S.D 4 years, 9 months ago

Life

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Arjun Chaudhary 4 years, 9 months ago

Life

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Name any two a better component of an environment?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Siya Singh 4 years, 9 months ago

Biotic and abiotic

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Adithya Dev A 4 years, 9 months ago

Biotic and abiotic.

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ANSWER

How much percentage of solar energy is observed by the green plant?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

4 answers

Kodaparthi Gangothri 4 years, 9 months ago

10%

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Sar Sutar 4 years, 9 months ago

1% of energy is absorbed by plant from sun and from plant to other organisms 10% law starts

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Palak Thakur 4 years, 9 months ago

1 joule

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Serma Kani 4 years, 9 months ago

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Name the components of blood that help in the formation of blood clot in the event of a cut?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

4 answers

Shreya S.D 4 years, 9 months ago

Platelet: is the component of blood that help in the formation of blood clot in the event of a cut

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Khushi Upadhyay Upadhyay 4 years, 9 months ago

Platelet

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Adithya Dev A 4 years, 9 months ago

Platelet cells.

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Serma Kani 4 years, 9 months ago

Platelets

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Name the site of exchange of material between the blood and surrounding cells?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Laya Lalu 4 years, 9 months ago

Cappilaries

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Serma Kani 4 years, 9 months ago

Capillaries

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Give one example why multicellular organism require special organs for exchange of gases between their body and their environment?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Arjun Chaudhary 4 years, 9 months ago

A reason is that multicellular organismsneed special organs for exchange of gases with the environment because of prokaryotic cells found in the body. The cells are not in contact with the environment and therefore diffusion would not work in the exchange of gases. The organs in the body therefore serve this purpose

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Arjun Chaudhary 4 years, 9 months ago

Because of maintaining a great metabolism and it has more organ to function various activities there fore they need to lot of oxygen or other energy by which it can role their functions

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ANSWER

How is the direction of electric current related to the direction of flow of electrons in a wire?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Muhammed Hanan 4 years, 9 months ago

Opposite to the direction of flow ?

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Ashutosh Singh Jat 4 years, 9 months ago

Direction of electric current is always opposite to the direction of flow of electrons?

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ANSWER

name the physical quantities which are indicated by the direction of thumb and forefinger in the Fleming's right hand rule?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Kashish Kumari 4 years, 9 months ago

Thumb : Induced current Forefinger : Magnetic field

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ANSWER

The magnetic field lines near the poles of a bar magnet is very dense and diverge as we move away from the poles. Why?

Posted by Om Singh Singh 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 4 years, 9 months ago

Near the poles, the strength of magnetic field is maximum. So, magnetic field lines are crowded. But, away from the poles, the strength of field deteriorates constantly. So, they diverge away from poles.

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ANSWER

Why does a Ray of light bend when it travels from one medium to another?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Khushi Upadhyay Upadhyay 4 years, 9 months ago

Due to refraction

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Palak Thakur 4 years, 9 months ago

Because speed of light is different in different mediums

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ANSWER

Give an example of optical phenomenon which occur in nature due to atmospheric refraction?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Sudhir Kumar 4 years, 9 months ago

Twinkling of stars

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ANSWER

Name the natural source of each of the following acid?a) lactic acid and b) tartaric acid

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Adithya Dev A 4 years, 8 months ago

a) Sour milk / Curd. b) Tamarind and grapes.

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Sar Sutar 4 years, 9 months ago

a) Milk b) Tamarind

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ANSWER

Name the gas generally liberated when an acid reacts with a metal

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

3 answers

Smruti Rekha Sahoo 4 years, 9 months ago

Hydrogen gas liberated

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Sar Sutar 4 years, 9 months ago

Hydrogen (H2)

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Palak Thakur 4 years, 9 months ago

Hydrogen

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ANSWER

What is role of seminal vesicle and prostrate gland?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Sar Sutar 4 years, 9 months ago

They both add their secretion to sperms so that it becomes fluid which makes it's transport easier and this fluid provides nutrition to sperm.

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Rishita Agarwal 4 years, 9 months ago

Seminal vesicle provide motility and fluidity to sperm and prostate gland provide nutrition to sperm.

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ANSWER

What is the advantage of sexual reproduction over asexual reproduction?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Aman Singh 4 years, 9 months ago

Advantages of sexual reproduction:

Sexual reproduction has a dual significance for the species.
1) It results in multiplication and perpetuation of the species.
2) It contributes to evolution of the species by introducing variation in a population much more rapidly than asexual reproduction.
3) In sexual reproduction, more variations are produced. Thus, it ensures survival of species in a population.
4) The new formed individual has characteristics of both the parents.
5) Variations are more viable in sexual mode than in asexual one. This is because in asexual reproduction, DNA has to function inside the inherited cellular apparatus.

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ANSWER

Why is vegetative propagation practiced for growing some type of plants?

Posted by Monika Gaur 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 4 years, 9 months ago

1) Plants with non viable seeds can reproduce via this method. Eg:- Banana, Onion, Potato, etc. 2) These plants are able to reproduce a lot before sexually reproducing Angiosperms. 3) The new plant would be GENETICALLY similar to parents.

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