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Ask QuestionPosted by Kritika Dhiman 5 years, 7 months ago
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Posted by Kritika Dhiman 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Transpiration plays a vital role in the body of the plants, some of them are :
It helps it to transport water and minerals towards the leaves from the roots in the upward direction against the gravitational pull
It cools down the plant during summers
It removes excess water
Also when water is eliminated from the plant it urges the roots to pull more water and along with them minerals are also absorbed with is beneficial for the plant.
Posted by Kritika Dhiman 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Meristematic cells divide frequently and give rise to new cells and hence they need dense cytoplasm and thin cell wall. Vacuoles causes hindrance in cell division as it is full of cell sap to provide turgidity and rigidity to the cell. Also vacuoles basically serve the purpose of storing of nutrients, excess salts etc. Meristematic cells do not need to store these nutrients as they have compact shape.
Posted by Nainee Veshu 5 years, 7 months ago
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Technical Reviews 5 years, 7 months ago
Posted by Rupak Singh Omi 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Acceleration due to the earth's gravity is zero at the centre of the Earth because at that point the mass of the earth is equally distributed in all directions, so pulling equally in all directions for a net zero pull.
As the distance from the centre decreases, the acceleration due to gravity also decreases.
At the centre the distance is zero, hence gravity is zero.
Posted by Kolli Varsha 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Longitudinal waves are the waves where the displacement of the medium is in the same direction, or in opposite direction, and direction of the travel of the wave. The distance between the centers of two consecutive regions of compression or the rarefaction is defined by wavelength, λ. When the compression and rarefaction regions are of two waves coincide with each other, it is known as constructive interference and if the regions of compression and rarefaction do not coincide, it is known as destructive interference.
Posted by Jitwsg Gangwar 5 years, 7 months ago
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Posted by Prabhjot Kaur 5 years, 7 months ago
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Meghna Thapar 5 years, 7 months ago
Posted by Prabhjot Kaur 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Pasture is land with herbaceous vegetation cover used for grazing of ungulate livestock as part of a farm or ranch. Prior to the advent of mechanized farming, pasture was the primary source of food for grazing animals such as cattle and horses. It is still used extensively, particularly in arid regions where pasture land is unsuitable for any other agricultural production.Pasture growth can consist of grasses, legumes, other forbs, shrubs or a mixture. better pasturage provides better habitat for honey bees & ensure more honey production.
Posted by Prabhjot Kaur 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Since no external force acts on the rifle, the change in momentum is zero.
Mometum of rifle = Momentum of bullet.
4 x V = 0.050 x 35
V = 0.44 m/s.
This is the recoil velocity of rifle.
Posted by Prabhjot Kaur 5 years, 7 months ago
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Anuradha Kumari 5 years, 7 months ago
Posted by Prabhjot Kaur 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
The work done by earth on the sun isZERO because the force acting on earth by the sun is the centriptal force and it works in 90 degree and the value of cos 90 is equal to 0. work done by the earth is zero in this case.
Posted by Sanjay Sen 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Electric Generator is the electric device that converts mechanical energy into electrical energy. It works on the principle of Electromagnetic Induction.
Posted by Sanjay Sen 5 years, 7 months ago
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Posted by Avijeet Kujur 5 years, 7 months ago
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Sanjay Sen 5 years, 7 months ago
Posted by Jyoti Chandra 5 years, 7 months ago
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Jyoti Chandra 5 years, 7 months ago
Posted by Sujit Patra 5 years, 7 months ago
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Posted by Saqlain Khan 5 years, 7 months ago
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Anuradha Kumari 5 years, 7 months ago
Sanjay Sen 5 years, 7 months ago
Piyush Pramanik 5 years, 7 months ago
Sujit Patra 5 years, 7 months ago
Posted by Abhay Sen 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
(i) Hypertonic Solution: A solution having higher concentration of solute with respect to another solution, is called hypertonic solution.
(ii) Hypotonic Solution: A solution having higher concentration of solvent with respect to another solution, is called hypotonic solution.
(iii) Isotonic Solution: A solution that have exactly the same water concentration with respect to another solution, is called isotonic solution.
Posted by Abhay Sen 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
|
Hypotonic Solution |
Isotonic Solution |
Hypertonic Solution |
|
Have a low concentration |
Have equal solute concentration |
Have higher concentration |
|
Causes cells to swell |
Show no effect on cells |
Causes cell to shrink |
|
They are not helpful in food preservation |
They are not helpful in food preservation |
They are helpful in food preservation |
Posted by Abhay Sen 5 years, 7 months ago
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Meghna Thapar 5 years, 7 months ago
A hypertonic solution is a solution that has a greater concentration of solutes on the outside of a cell when compared with the inside of a cell.
A hypotonic solution is a solution that has a lesser concentration of solutes on the outside of a cell when compared with the inside of a cell.
An isotonic solution has same concentration of solutes outside and inside of a cell.
Posted by Ashutosh Kumar Tiwari 5 years, 7 months ago
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Meghna Thapar 5 years, 7 months ago
Unbiunium, also known as eka-actinium or simply element 121, is the hypothetical chemical element with symbol Ubu and atomic number 121.a
Posted by Divyansh Bhati 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
- It protects and supports the body.
- The cells are loosely spaced and embedded in an intercellular matrix.
- The matrix may be jelly like, fluid, dense or rigid.
- The nature of matrix differs in concordance with the function of the particular connective tissue.
Posted by Fazil Khan 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Ernest Rutherford was interested in knowing how the electrons are arranged within an atom. Rutherford designed an experiment for this. In this experiment, fast moving alpha (α)-particles were made to fall on a thin gold foil.
- He selected a gold foil because he wanted as thin a layer as possible. This gold foil was about 1000 atoms thick.
- α-particles are doubly-charged helium ions. Since they have a mass of 4µ, the fast-moving α-particles have a considerable amount of energy.
It was expected that α-particles would be deflected by the sub-atomic particles in the gold atoms. Since the α-particles were much heavier than the protons, he did not expect to see large deflections. But, the α-particle scattering experiment gave totally unexpected results .
Posted by Pratee S 5 years, 7 months ago
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Prem Lata 5 years, 7 months ago
Posted by Aashmeen Khan 5 years, 7 months ago
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Posted by Nabeeha Khan 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
- Kepler’s Law of Orbits – The Planets move around the sun in elliptical orbits with the sun at one of the focii.
- Kepler’s Law of Areas – The line joining a planet to the Sun sweeps out equal areas in equal interval of time.
- Kepler’s Law of Periods – The square of the time period of the planet is directly proportional to the cube of the semimajor axis of its orbit.
Posted by Dishaka Solanki 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
The latent heat of vaporisation of a liquid is the quantity of heat in joules required to convert 1 kilogram of the liquid (at its boiling point) to vapour or gas, without any change in temperature.
The latent heat of vaporization of water is 22.5×105 joules per kilogram (or 22.5×105 j/kg).
Rohan Rauniyar 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
The outer layer of a plant is a very rough surfaces known as bark which consist of dead cells
The outer layer of stems is not that hard compared to bark and it's made up of living cells.
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