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Ask QuestionPosted by Shankargouda Bammangoudar 6 years ago
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Posted by Shankargouda Bammangoudar 6 years ago
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Posted by Vrushti Doshi 6 years ago
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Meghna Thapar 5 years, 9 months ago
Biosphere has biotic (living) and non biotic (non living)components. Biotic components are plant, animals and microorganisms. Abiotic components air, water and land. Interactions happens between biotic and Abiotic component and constant transfer of food and energy goes on which provides stability and makes the system dynamic.
A constant interaction between biotic and abiotic components of biosphere makes it dynamic and stable. Interaction consists of transfer of matter and energy between different components of biosphere.
Posted by Aditya Sharma 6 years ago
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Vrushti Doshi 6 years ago
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Vrushti Doshi 6 years ago
Yogita Ingle 6 years ago
Change in velocity involves acceleration. So whenever the objects falls towards earth an acceleration is involved due to earth's gravitational force.
This acceleration due to earth's gravitational force is called acceleration due to gravity which is denoted by 'g' and its unit is m/s2
Posted by Ankita P 6 years ago
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Posted by Dr. Sharmila Behera 6 years ago
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Sneha Anand 6 years ago
Rashi Khattar 6 years ago
Posted by Shrwan Berwa 6 years ago
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Yogita Ingle 6 years ago
| Algae |
Fungi |
|
The term originated from Latin and it means “Seaweed” |
Originated in Latin and it means “mushroom” |
| Algae belong to the Kingdom Protista |
Fungi were once classified under Kingdom Protista, but are now classified under their own kingdom – Fungi |
|
Algae are autotrophic organisms |
Are usually heterotrophic. They prefer dead organic matter. |
| Strictly exists in bodies of water or any environment with high moisture content |
Found almost everywhere, including deserts and frigid environments |
|
Are not parasitic |
Some members are parasitic |
Posted by Bhabanis Sahoo 6 years ago
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Yogita Ingle 6 years ago
The characteristics of matter demonstrated by diffusion are :
- Matter is made up of tiny particles.
- The particles of matter have large space in between them.
Posted by Gaurav Jagatkar 6 years ago
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Yogita Ingle 6 years ago
Water is solvent and sugar and salt are solvent. When the sugar or salt are added to water, the positive ions (anions) attracts negative ions of sugar/salt while the negative ions (cations) attracts postive ions of sugar or salt.
Hence, the molecules of sugar or salt can form a mixture with molecules of water and this is called solubility.
Thus, sugar and salt gets easily dissolved in water after some time.
Posted by Naina Choudhary. 6 years ago
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Meghna Thapar 6 years ago
Health Effects of UV Radiation:
- Skin cancer (melanoma and nonmelanoma)
- Premature aging and other skin damage.
- Cataracts and other eye damage.
- Immune system suppression.
Posted by Naina Choudhary. 6 years ago
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Sneha Anand 6 years ago
Meghna Thapar 6 years ago
Heat is trapped by glass, and hence the temperature inside a glass enclosure will be much higher than the surroundings. This phenomenon was used to create an enclosure where tropical plants could be kept warm during the winters in colder climates. Such enclosures are called greenhouses. Carbon dioxide is one of the greenhouse gases. An increase in the carbon dioxide content in the atmosphere would cause more heat to be retained by the atmosphere and lead to global warming. The global warming is quite dangerous as it tends to melt polar ice and glaciers existing on mountains, rise in the water level of the oceans and submerge several coastal areas and islands. This could further lead to floods.
Posted by Naina Choudhary. 6 years ago
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Meghna Thapar 6 years ago
Soil types: The soil is classified on the basis of the proportion of particles of various sizes. The sizes of the particles in a soil have a very important influence on its properties. There are mainly three basic types of soils. These are:
i. Sandy soil: If soil contains greater proportion of big particles it is called sandy soil. This soil contains very little humus and it is found in desert areas. A disadvantage of this soil is that it cannot hold much of the water in it because the water gets drained out through large spaces between its particles.
ii. Clayey soil: If the proportion of fine particles is relatively higher, then it is called clayey soil. It contains mainly clay and very less humus. Clayey soil has very good water-holding capacity due to its very small and tightly packed particles. Clayey soil is very heavy and is more fertile than sandy soil.
iii. Loamy soil: If the amount of large and fine particles is about the same, then the soil is called loamy. It is a mixture of sand, clay, silt and humus in correct proportion. The excess water can also drain out through it easily. This soil has adequate air spaces between its particles to hold sufficient air needed by plant roots. It is the most fertile soil.
Posted by Naina Choudhary. 6 years ago
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Amrita Kushwaha 6 years ago
Meghna Thapar 6 years ago
Organ Specific Manifestation- These are the diseases caused in the same organ or organ system as the point of entry of the microbe. E.g. Tuberculosis which enters through the nose and affects the lungs. (Both are organs of the respiratory system)
Tissue Specific Manifestation- These are the diseases caused in a different organ at the point of entry. E.g. Japanese Encephalitis which enters through the blood but affects the brain.
An infection like HIV comes into the body via the sexual organs, will spread to lymph nodes all over the body. Malaria-causing microbes, entering through a mosquito bite, will go to the liver, and then to the red blood cells. The virus causing Japanese encephalitis, or brain fever, will similarly enter through a mosquito bite. But it goes on to infect the brain.
Posted by Naina Choudhary. 6 years ago
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Meghna Thapar 6 years ago
Applications of ultrasound:
- Ultrasound is used in industry for detecting flaws in metal blocks without damaging them.
- Ultrasound is used in industry to clean ‘hard to reach’ parts of objects such as spiral tubes, odd-shaped machines and electronic components, etc.
- It is used to investigate the internal organs of the human body such as liver, gall bladder, pancreas, kidneys, etc.
Posted by Naina Choudhary. 6 years ago
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Amrita Kushwaha 6 years ago
Meghna Thapar 6 years ago
Sound is produced by vibrating objects. The matter or substance through which sound is transmitted is called a medium. It can be solid, liquid or gas. Sound moves through a medium from the point of generation to the listener. When an object vibrates, it sets the particles of the medium around it vibrating. When an object vibrates, then the air layers around it also starts vibrating in exactly the same way and carry sound waves from the sound producing object to our ears. The disturbance created by a source of sound in the medium travels through the medium and not the particles of the medium. The particles of the medium do not move forward themselves, but the disturbance is carried forward. This is what happens during propagation of sound in a medium, hence sound can be visualised as a wave.
Posted by Naina Choudhary. 6 years ago
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Bharti Gupta 6 years ago
Meghna Thapar 6 years ago
- The time taken for one complete oscillation in the density (or pressure) of the medium is called the time period (T) of the wave.
- The magnitude of maximum disturbance in the medium on either side of the mean position is called the amplitude (A).
Posted by Naina Choudhary. 6 years ago
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Alok Jha😊😁 6 years ago
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Meghna Thapar 6 years ago
- The distance between two consecutive compressions or two consecutive rarefactions is called wavelength (λ) of the wave.
- The number of complete oscillations per second is called the frequency (ν) of the sound wave.
Posted by Naina Choudhary. 6 years ago
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Bharti Gupta 6 years ago
Meghna Thapar 6 years ago
The law of reflection of sound waves states that the angle of incidence is always equal to the angle of reflection. But unlike reflection of light on a highly smooth surface, in the reflection of the sound wave, a part of the incident wave gets transmitted to the medium where it hits.
Posted by Naina Choudhary. 6 years ago
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Alok Jha😊😁 6 years ago
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Posted by Naina Choudhary. 6 years ago
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Posted by Shankargouda Bammangoudar 6 years ago
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Yogita Ingle 6 years ago
Simple permanent tissues are of three types: Parenchyma, Collenchyma, and Sclerenchyma. Parenchyma is two types
- Chlorenchyma
- Aerenchyma.
Posted by Shankargouda Bammangoudar 6 years ago
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Yogita Ingle 6 years ago
All cellular processes take place in a water medium. All the reactions that take place within our body and within the cells occur between substances that are dissolved in water. Substances are also transported from one part of the body to the other in a dissolved form. Hence organisms need to maintain the level of water within their bodies to stay alive. Terrestrial life forms need fresh water for this since their bodies cannot tolerate or get rid of the high amounts of dissolved salts in saline water. Plants require large amount of water for carrying out transport through xylem.
Posted by Shankargouda Bammangoudar 6 years ago
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Yogita Ingle 6 years ago
Peptic ulcers are ulcers that form in the stomach or the upper part of the small intestine, called the duodenum. An ulcer in the stomach is called a gastric ulcer and an ulcer in the duodenum is called a duodenal ulcer.
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