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How single celled organisms are able to survive without any specific organs

Posted by Prashant Kumar 4 years, 4 months ago

2 answers

Sayantani Sen 4 years, 4 months ago

In unicellular organisms like Amoeba, the single cell is in direct contact with the environment. So, all the life processes takes place in the entire surface of the cell. Thus, single celled organisms are able to survive without any specific organs.

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Vishvesh Mishra 4 years, 4 months ago

Because they do all the life process through a cell only. The cell is in the environment and hence can do process like respiration and excreation with simple diffusion

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.What are the components of transport system in highly organised plants

Posted by Lakshya Garg 4 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 4 months ago

The highly organised plants contain conducting tissues like xylem and phloem. Xylem transports water and minerals from roots to aerial parts of the plant whereas phloem transport food from leaves to other parts of the plant.

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write the balance chemicals equation for phosphorus burns in presence of chlorine to form phosphorus penta chloride.

Posted by Preety Pandey 4 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Pankaj Kumar Patel 4 years, 4 months ago

4p+10cl2_______ 4pcl5

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Shubham Kumar 4 years, 4 months ago

4P4 + 10Cl2 → 4PCl5

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Even after forcible exhalation always some amount of air is present in respiratory tract, called __________

Posted by Dev Ranjan Singh 4 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Vishvesh Mishra 4 years, 4 months ago

Residual volume

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What is the SI unit of charge

Posted by Bhumika Patel 4 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Dibya Darshan Nayak 4 years, 4 months ago

Coulomb is the si unit of charge

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Harshitha ... 4 years, 4 months ago

Coulomb is the SI unit of electric charge .

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Uday Thakur 4 years, 4 months ago

Pascal

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Pankaj Kumar Patel 4 years, 4 months ago

SI unit of charge is coulomb.

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Alveoli are located at the end___________

Posted by Uday Dixit 4 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Yogita Gupta 4 years, 4 months ago

End of bronchioles

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Pankaj Kumar Patel 4 years, 4 months ago

The alveoli are located in the alveolar sacs of the lungs .

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Dev Ranjan Singh 4 years, 4 months ago

Alveolar Duct.(pakka 100%)

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Parth G 4 years, 4 months ago

Of bronchioles

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How heart works?

Posted by Saniya Parween 4 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Sia ? 4 years, 4 months ago

The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide. The left side of your heart receives oxygen-rich blood from your lungs and pumps it through your arteries to the rest of your body.

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Aliya . 4 years, 4 months ago

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Draw a schematic diagram of a circuit consisting 3v battery , 5ohm,3ohm,and 1ohm resister an ammeter and a plug key all connected in series

Posted by Shubham Upadhyay 4 years, 4 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Explain the different types of respiration in frogs?

Posted by Santosh Ram 4 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Sia ? 4 years, 4 months ago

The frog has three respiratory surfaces on its body that it uses to exchange gas with the surroundings: the skin, in the lungs and on the lining of the mouth. A frog may also breathe much like a human, by taking air in through their nostrils and down into their lungs

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Aliya . 4 years, 4 months ago

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What is the cause of dispersion

Posted by D.S Manhas 4 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 4 months ago

Dispersion occurs due to the different degrees of refraction experienced by different colours of light. Light of different colours may travel with the same speed in a vacuum, but they travel at different speeds in some refracting medium. The speed of violet light is relatively lower than that of red light.

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What is picric acid and use

Posted by Pankaj Kumar Patel 4 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 4 months ago

Picric acid, also called 2,4,6-trinitrophenol, pale yellow, odourless crystalline solid that has been used as a military explosive, as a yellow dye, and as an antiseptic.

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What is stomata ? And what is the process of photosynthesis in stomata

Posted by Anand Raj 4 years, 4 months ago

CBSE > Class 10 > Science

3 answers

Harshitha ... 4 years, 4 months ago

The tiny pores located on the surface of the leaves are called stomata . They help in photosynthesis by exchanging gases .

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Anshika Choudhary 4 years, 4 months ago

Stomata are tiny pores located in cross section of leaves which is covered by 2 guard cell. Stomata helps in exchange of gas during the time of photosynthesis.

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Aasif Chohan 4 years, 4 months ago

Stomata are tiny pores located in leaves covered by 2 guard cells.

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ANSWER

Physics solution ch.electricity

Posted by Tamanna Patel 4 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Anand Raj 4 years, 4 months ago

Class X Chapter 12 – Electricity Science Page 1 of 27 Website: www.vidhyarjan.com Email: [email protected] Mobile: 9999 249717 Head Office: 1/3-H-A-2, Street # 6, East Azad Nagar, Delhi-110051 (One Km from ‘Welcome Metro Station) Question 1: What does an electric circuit mean? Answer: An electric circuit consists of electric devices, switching devices, source of electricity, etc. that are connected by conducting wires. Question 2: Define the unit of current. Answer: The unit of electric current is ampere (A). 1 A is defined as the flow of 1 C of charge through a wire in 1 s. Question 3: Calculate the number of electrons constituting one coulomb of charge. Answer: One electron possesses a charge of 1.6 × 10−19 C, i.e., 1.6 × 10−19 C of charge is contained in 1 electron. ∴ 1 C of charge is contained in Therefore, electrons constitute one coulomb of charge. Class X Chapter 12 – Electricity Science Page 2 of 27 Website: www.vidhyarjan.com Email: [email protected] Mobile: 9999 249717 Head Office: 1/3-H-A-2, Street # 6, East Azad Nagar, Delhi-110051 (One Km from ‘Welcome Metro Station) Question 1: Name a device that helps to maintain a potential difference across a conductor. Answer: A source of electricity such as cell, battery, power supply, etc. helps to maintain a potential difference across a conductor. Question 2: What is meant by saying that the potential difference between two points is 1 V? Answer: If 1 J of work is required to move a charge of amount 1 C from one point to another, then it is said that the potential difference between the two points is 1 V. Question 3: How much energy is given to each coulomb of charge passing through a 6 V battery? Answer: The energy given to each coulomb of charge is equal to the amount of work required to move it. The amount of work is given by the expression, Potential difference = Where, Charge = 1 C Potential difference = 6 V Therefore, 6 J of energy is given to each coulomb of charge passing through a battery of 6 V. Question 1: On what factors does the resistance of a conductor depend? Answer: The resistance of a conductor depends upon the following factors: (a) Length of the conductor (b) Cross-sectional area of the conductor (c) Material of the conductor (d) Temperature of the conductor Question 2: Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why? Answer: Resistance of a wire, Where, = Resistivity of the material of the wire l = Length of the wire A = Area of cross-section of the wire Resistance is inversely proportional to the area of cross-section of the wire. Thicker the wire, lower is the resistance of the wire and vice-versa. Therefore, current can flow more easily through a thick wire than a thin wire. Question 3: Let the resistance of an electrical component remains constant while the potential difference across the two ends of the component decreases to half of its former value. What change will occur in the current through it? Answer: The change in the current flowing through the component is given by Ohm’s law as, V = IR Where, Resistance of the electrical component = R

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What is force

Posted by Vishal Kumar Thakur Thakur 4 years, 4 months ago

CBSE > Class 10 > Science

5 answers

Agnivesh Mali 4 years, 4 months ago

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Abhinav Singh Singh 4 years, 4 months ago

Push ot pull of any object is known as force it is called force

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Geetha Sri 4 years, 4 months ago

In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity.

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Jejej Zjsjsjsj 4 years, 4 months ago

Push or pull on any object is known to be force. Hope it helps you (θ‿θ)

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Vishal Kumar Thakur Thakur 4 years, 4 months ago

Pull or push is called force SI unit of force is Newton

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Prepare chart of Ray diagram for mirror and Lens

Posted by Anshu Kumari Kumari 4 years, 4 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

explain your view in the choice of "how to observe the current electricity " on which basis you like it

Posted by Beast Boy 4 years, 4 months ago

CBSE > Class 10 > Science

0 answers

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which of the following represent the correct decreasing order of hydrogen atoms

Posted by Joban Singh 4 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Abhinav Singh Singh 4 years, 4 months ago

H+

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Name the following acid present in .1. tomato.2.vineger .3. termrind

Posted by Gagan Jorwal 4 years, 4 months ago

CBSE > Class 10 > Science

5 answers

Dibya Darshan Nayak 4 years, 4 months ago

Oxalic acid ,acetic acid and tartaric acid are present in following cases

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Anjali Shakya 4 years, 4 months ago

Oxalic acid present in tomato. Acetic acid present in vinegar. Tartaric acid present in termrind.

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Abhinav Singh Singh 4 years, 4 months ago

Tomato =oxalic acid vinegar= acetic acid termrind= tartaric acid

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Vishal Kumar Thakur Thakur 4 years, 4 months ago

In tomato ? oxalic acid presents

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Pankaj Kumar Patel 4 years, 4 months ago

Acid present in tomato is oxalic acid and present in vinegar is acetic acid or present in termrind is tartaric acid

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Work done in moving an electron form one point to another in an electric field is 9.6× 10−19 J. Find electric potential difference between the two points.

Posted by Lakshya Garg 4 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 4 months ago

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Identify the reducing agent in the reaction 4NH3+5o2----4No+6H2o

Posted by Manish Dhangar 4 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Saloni Harinkhede 4 years, 4 months ago

NH3

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Sohit Narayan 4 years, 4 months ago

NH3 Is a reducing agent

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Sohit Narayan 4 years, 4 months ago

NH3

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Naman Sarraf 4 years, 4 months ago

1Thank You

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What are tricuspid valves and bicuspid valves?

Posted by Sehaj Kaur 4 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Dev Ranjan Singh 4 years, 4 months ago

Tricuspid valve - Valve containing three cusp ( Looks like the logo of MERCEDES) Bicuspid valve- Valve two cusp (like a circle with a diameter)

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Sia ? 4 years, 4 months ago

Tricuspid valve – located between the right atrium and the right ventricle (right atrioventricular orifice). Mitral valve – located between the left atrium and the left ventricle (left atrioventricular orifice). It is also known as the bicuspid valve because it has two cusps (anterior and posterior).

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Veins are thin walled and have valves. Justify.

Posted by Sehaj Kaur 4 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Pankaj Kumar Patel 4 years, 4 months ago

Veins have thin wall because the blood there is no longer under pressure and also they have valve which helps in blood in one direction .

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Write the types of acid and base with properties

Posted by Amisha Kumari 4 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 4 months ago

Properties	Acids	Bases
Colour	Mineral acids are colourless liquids but sometimes sulphuric acid becomes yellow due to impurities. Some organic acids are white coloured solids. Examples: benzoic acid	Bases are colourless except the hydroxides of iron and copper.
Taste	Sour	Bitter
Touch	–	Slippery
Solubility	Soluble in water	Some bases are soluble in water.

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Sorry i am go to wastage question but this question was very important i am on classs 10 pleese give. Me best timetable

Posted by Hardik Pandey 4 years, 4 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

How can i score out of out in science

Posted by Srinivas K.C 4 years, 4 months ago

CBSE > Class 10 > Science

3 answers

Anand Raj 4 years, 4 months ago

By analising topic carefulluy line by line

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Jasleen Gill 4 years, 4 months ago

By spending at least 8 to 9 hours studying

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Laxminarayan Bainsla 4 years, 4 months ago

By hard-working

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Name the accessory ducts of heart for transportation. Class 10th Chapter 5

Posted by Shaurya Vikramaditya 4 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Parth G 4 years, 4 months ago

Aorta - for transporting oxygenated blood to all body parts from heart Vena cava - brings deoxygenated blood from all body parts to heart Pulmonary vein - brings oxygenated blood from lungs to heart Pulmonary artery - carry deoxygenated blood from heart to lungs ??

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Describe the working of human blood circulatory system with the help of a suitable diagram which shows all the steps involved.

Posted by Atul Jee 4 years, 4 months ago

CBSE > Class 10 > Science

0 answers

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Explain Nutrition in himan being.

Posted by Krish Patel 4 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Anand Raj 4 years, 4 months ago

It is procesa of obtaining and utilization of food for various requirement of a living beings called nutrition. Importance of nutrition:- 1.for energy 2.for reprofuction 3.for body structure 4.for growth 5. For repair of body 6.for resistance(imunity)

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Ritik Yadav 4 years, 4 months ago

Nutrition in human beings evolved 1,Ingestion-in taking of food 2,digestion-the process of converting complex food into simpler one 3,absorption -it is the process of absorbing nutrients from digested food 4,assimilation - it is the process of obtaining energy from absorbed food 5, egestion-it is the process of expelling out unabsorbed food

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.3 An object is placed 18cm front of a mirror. If the image is formed at 4cm to the right of the mirror. Calculate its focal length. Is the mirror convex or concave? What is the nature of the image? What is the radius of curvature of the mirror?

Posted by Vishvesh Mishra 4 years, 4 months ago

CBSE > Class 10 > Science