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Posted by Faiz Khan 5 years, 3 months ago
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Kuruva K.Sri Harshitha 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
The process by which plants make their own food in the presence of sunlight, carbon-dioxide present in air, water, minerals and chlorophyll present in leaves is termed as photosynthesis.
Green plants make their food themselves. Green leaves make food from Carbon dioxide and water in the presence of sunlight and chlorophyll.
Leaves have several tiny pore-like structures on the lower surface. Such a pore is called stomata through which leaves absorb carbon dioxide from air. Water is transported to the leaves through hair like pipelines from the roots. These pipelines are present throughout the plant, i.e. from roots to branches and leaves. These pipe-lines are known as Xylem. Xylem is a type of tissue. Chlorophyll, a green pigment, is found in green leaves. Chlorophyll absorbs sunlight and gives energy. Chloroplast is the site of photosynthesis. Carbohydrate is used as food and oxygen is emitted out to atmosphere. This whole process of making food by plants is called photosynthesis.
The reaction that takes place in the process of photosynthesis can be written as:
<i>6CO2 + 6H2O → C6H12O6 + 6O2</i>
Posted by Bhuvana Sree S 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Speed: Speed can be defined as the distance travelled by an object in unit time.
In a pendulum, the bob is said to complete one oscillation, when it moves from one position and comes back to the same position.
The motion of pendulum starting from one extreme end to another extreme end and back to the first extreme end is called one oscillation. Similarly, the motion of a simple pendulum from its mean position to extreme left and extreme right and back to the mean position is called one oscillation.
Posted by Ritik Raj 5 years, 3 months ago
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Suhani Kahandal 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Turmeric: Turmeric is also used as natural indicator. Turmeric is of yellow colour. Turmeric paper turns into red when it is dipped into basic solution. Turmeric paper does not change its colour with acid.
Posted by Shivam Singh 5 years, 3 months ago
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Meghna Thapar 5 years, 1 month ago
(i) Substance X is Calcium Oxide whose solution we use in water which is used for white washing. The formula of substance X is Cao.
(ii) Calcium oxide reacts vigorously with water to produce slaked lime (calcium hydroxide) releasing a large amount of heat.
Ca0(s) + H2O(l) → Ca(OH)2(aq)
(Quick Lime) (Water) (Slaked Lime)
Posted by Shivam Singh 5 years, 3 months ago
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Brijesh Sharma 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Bases may either be soluble or insoluble in water. Therefore, all alkalis are bases because they will all neutralize acids, but not all bases are alkalis because not all bases will dissolve in water. An example of an alkali is sodium hydroxide.
Posted by Shivam Singh 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Dilution of concentrated acid is an exothermic process. If water is added to a concentrated acid, the heat generated may cause the mixture to splash out and cause burns. When the acid is added to water slowly with constant stirring, the mixture will not splash out.
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Yogita Ingle 5 years, 3 months ago
Parasites are plants or animals that live on or in a host getting their nutrients from that host.
There are two types of parasites- ectoparasites and endoparasites. Endoparasites live inside the host which include heartworm and flatworms. Ectoparasites live on the hosts which include lice and fleas.
There are other types of parasites that include protozoa and helminths.
Posted by Subham Mishra 4 years, 7 months ago
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Sia ? 4 years, 7 months ago
Aluminium composite panel its short form is ACP. It is also known as a sandwich panel. The aluminium composite panel was invented by 3A composites company in 1964 as a joint invention with BASF.
Posted by Alfiya Rauf 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Camel is called the "Ship of Desert" because it is the only mean of transportation found in deserts which helps human being go from one place to another easily in the desert.It has humps which help it to survive long dry periods without water.Its feet are thick which help it to move on the hot sand easily.Beacuse of its many adaptations,camel is called the "Ship of Desert".There are several species of camels, such as Arabian camel and Bactrian camel, whuch vary slightly in physical appearance, but share a suite of characteristics amd physical features, such as double rows of eyelashes, which protect them from the direct sunlight, to help them survive in dry and arid conditions.
Bhuvana Sree S 5 years, 3 months ago
Posted by Y . Sarandeep 10 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
There are eight planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto is not considered in the planets or called 'dwarf planet' because it did not meet the criteria of being a planet.
Posted by Y . Sarandeep 10 5 years, 3 months ago
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Posted by Jyoti Chavda Shivm Chavda 5 years, 3 months ago
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Suhani Kahandal 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
The parts of the digestive tract are:
- Mouth and buccal cavity
- Food pipe/Oesophagus
- Stomach
- Small intestine
- Large intestine
- Rectum
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Gaurav Seth 5 years, 3 months ago
It is a complex process involving the following steps:
- Ingestion – Ingestion refers to the intake of food. Ingestion takes place through Mouth
- Digestion – Digestion refers to the breakdown of ingested food into simpler forms. Teeth, Stomach, Small intestine and secretion from various glands help in Digestion
- Absorption – Absorption refers to the process in which digested food is absorbed into the body fluids (Blood & lymph). Small intestine plays a major role in Absorption
- Assimilation – Assimilation refers to the process in which absorbed food is transported to different cells of the body
- Egestion – Egestion refers to the process of removal of undigested food from the body. Large intestine plays a major role in Egestion
Posted by Komal Kumari 5 years, 3 months ago
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Gaurav Seth 5 years, 3 months ago
The presence of starch in leaves can be tested by the Iodine test. When we remove chlorophyll from the leaf by boiling it in alcohol and then put two drops of iodine solution, it is colour change to blue indicates the presence of starch.
Step 1: A fresh leaf is taken.
Step 2: The leaf is boiled in water for few minutes to soften the cells in the leaf.
Step 3: Now, dip this leaf in iodine solution.
Step 4: The color of the leaf will changes into blue black color when iodine is added to it which shows the presence of starch in it.
Posted by Komal Kumari 5 years, 3 months ago
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Posted by Piyush Pandey 5 years, 3 months ago
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Mayank Kumar 5 years, 3 months ago
Anishka Chaturvedi 5 years, 3 months ago
Nabiha Nazli Hashmi 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
A chemical reaction is in which the bonds are broken within reactant molecules, and new bonds are formed within product molecules in order to form a new substance.
Posted by Puneet Verma 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
We find animals of certain kind living in particular climatic conditions because every living organism is adapted to live in the particular habitat. Every living thing develops their feature according to the area they live in.
For example, penguins have thick skin to protect themselves from cold and webbed feet to swim in water. It will not be able to survive in the hot climate of tropical regions as they developed thick skin for the protection from cold not from the hot and humid temperature.
Posted by Saumya Seth 5 years, 3 months ago
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Anjali Kumari 5 years, 3 months ago
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Following are the basic three states of matter:
- Solid
- Liquid
- Gas
Posted by Likhith Ml 5 years, 3 months ago
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Gaurav Seth 5 years, 3 months ago
Decomposers are organisms that feeds on dead or decaying organisms so, they carry out the natural process of decomposition.
When plants and animals die, they become food for decomposers like bacteria, fungi and earthworms. They recycle dead plants and animals into chemical nutrients like carbon and nitrogen that are released back into the soil, air and water.
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Yogita Ingle 5 years, 3 months ago
A storm is a disturbed state of environment creating severe weather conditions mainly high speed winds. A thunderstorm is a storm with sound and lightning and typically also heavy rain or hail.
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