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Ask QuestionPosted by Jasim Muhammed 7 years, 6 months ago
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Posted by Vaishnavi Metkari 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Plants are autotrophs since they make their own food. Animals including humans depends on them for all their nutrition needs. Figure below shows that how meet eating animals ultimately depends on plants for their nutrition.
Posted by Rahithya Reddy 7 years, 6 months ago
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Posted by Rahul Sharma 7 years, 6 months ago
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Komal Rani 7 years, 6 months ago
Posted by Akriti Bisht 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
- Air exerts pressure and expands on heating and contracts on cooling
- Warm air rises up, and the comparatively cool air tends to sink towards the earth’s surface
- When warm air rises up, the air pressure at that place becomes less and cooler air moves toward that place
- Air moves from a region of high pressure to a region of low pressure
- Moving air is called wind
- Wind carrying water vapour brings rain
- Wind movement is caused because of the uneven heating of the earth’s surface
- Cyclones are huge revolving storms caused by winds blowing around a central area of low atmospheric pressure
- Tracking and monitoring cyclones have improved with technology and communication
- Self-help is the best help , thus it is better to plan in advance and be ready with defence against any approaching cyclone
Posted by Roopashree Niranjan 7 years, 6 months ago
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Posted by Vishvajit Mishra 7 years, 6 months ago
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Rishabh Sukhdeve 7 years, 6 months ago
Sonali Aggarwal 7 years, 6 months ago
A symbiotic relationship means a mutually interdependent relationship. Two different kinds of organisms live together for their mutual benefit. For example, algae, which is an autotroph, and fungus, which is a saprophyte, live together in lichen.
Sohan 420 7 years, 6 months ago
Posted by Aditya Tomar 5 years, 9 months ago
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Vishesh Kumar 7 years, 6 months ago
Posted by Yogi Patil 7 years, 6 months ago
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Rishabh Sukhdeve 7 years, 6 months ago
Rahul Sharma 7 years, 6 months ago
Sanskriti Suhani 7 years, 6 months ago
Posted by Rahul Sharma 7 years, 6 months ago
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Rishabh Sukhdeve 7 years, 6 months ago
Rishabh Sukhdeve 7 years, 6 months ago
Sandeshkumar Mallannavar 7 years, 6 months ago
Sandeshkumar Mallannavar 7 years, 6 months ago
Posted by Rahul Sharma 7 years, 6 months ago
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Sandeshkumar Mallannavar 7 years, 6 months ago
Posted by Rahul Sharma 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Life Cycle – Silk Moth: Actually silkworms are not worms, but the larvae or caterpillars hatched from the eggs of the silk moth. The life history of a silk moth starts when a female silk moth lays eggs.
The larvae or caterpillars hatched from the eggs of the silk moth. These silkworms feed on fresh mulberry leaves the silkworm grows in size and then becomes a pupa.
In the pupa stage, it weaves a net to hold itself. It then swings its head from side to side, secreting a fibre that hardens on contact with air. This fibre is made of a protein and becomes the silk fibre.
The caterpillar covers itself completely with silk fibre and turns into a pupa, this covering is known as the cocoon. The moth continues to develop within the cocoon. The silk thread or yarn is obtained from the silk moth’s cocoon.
Posted by Rahul Sharma 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
The unicellular Amoeba engulfs tiny particles of food by throwing its false feet, known as pseudopodia around it. The pseudopodia join together to form a small cavity known as a food vacuole. The food inside the vacuole is digested by digestive juices. It is absorbed and assimilated there to provide energy and perform other functions.
Posted by Rahul Sharma 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Hydrochloric acid is the only acid secreted by parietal cells of the stomach.
- This provides an acidic environment for many digestive enzymes to become active. Enzymes like pepsinogen get activated by HCl into pepsin which acts on proteins and brings about their digestion.
- HCl along with gastric lipase emulsifies the lipids present in our food.
- HCl kills most of the pathogenic bacteria entering the digestive tract along with our food and water.
Posted by Rahul Sharma 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Saliva is the first digestive juice secreted in our mouth by the salivary gland. It has an enzyme called salivary amylase that breaks down starch,a complex molecule,to sugar. So when saliva is added to starch it breaks it down into sugar and when we drop iodine solution to this mixture it will not turn blue black indicating that starch is broken into sugar. But if the solution turns blue black then it means that the starch has not completely broken into sugar. This is the effect of saliva on starch.
Posted by Rahul Sharma 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
No digestion occurs in large intestine yet its role is important. Justify the statement.
The large intestine plays an important function in two most important steps of digestion .
1. It absorbs water and some salts from the undigested food material.
2. It is also responsible for the transfer of the waste material after complete absorption to the rectum and then **** for egestion
Posted by Rashmi Chandel 7 years, 6 months ago
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Sandeshkumar Mallannavar 7 years, 6 months ago
Posted by Debjani Dash 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Pancreatic juice is a liquid secreted by the pancreas. Pancreatic juice is alkaline in nature due to the high concentration of bicarbonate ions. It contains enzymes which help in digestion and it also helps in regulating the sugar level in the body.
Posted by Rahul Sharma 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
The growing of different kinds of crops on a piece of land in a preplanned succession is known as crop rotation. In the rotation of crops, leguminous crops like pulses, beans, peas, groundnut and Bengal gram are sown in-between the seasons of cereal crops like wheat, maize and pearl millet. The leguminous plants are grown alternately with non-leguminous plants to restore the fertility of the soil. When the cereal crops like rice, wheat, maize are grown in the soil, it uses up a lot of nitrogenous salts from the soil. If another crop of cereal is grown in the same soil, the soil becomes nitrogen deficient. So by rotation a leguminous crop is grown. There plants have the ability to fix atmospheric nitrogen to form nitrogen compounds through the help of certain bacteria present in their root. These nitrogen compounds go into the soil and make it more fertile. After the leguminous plants utilize some of the nitrogen compounds, the rest of it is left in the soil to enrich it. Thus, planting a leguminous plant will result in nitrogen rich soil and when a cereal is grown in this soil there is increase in food grain production.
Posted by Gollapudi Santosh 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Glucose is a simple sugar. Carbohydrates, when consumed, have to be digested into glucose. As glucose can be easily absorbed in blood, it provides energy to the body. Hence, when glucose is directly taken, it does not have to be digested and thus acts as an instant source of energy.
Posted by Gollapudi Santosh 7 years, 6 months ago
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Deepanshi Sachdeva 7 years, 6 months ago
Posted by Gollapudi Santosh 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Photosynthesis is defined as the process in which the chlorophyll-containing plant cells synthesize food in the form of carbohydrates, using carbon dioxide and water in the presence of solar energy.
Sources of raw materials required for photosynthesis:
(a) Water is taken in, from the roots of the plant and is transported to the leaves.
(b) Carbon dioxide from the air enters the leaves through the pores called stomata and diffuses to the cells containing chlorophyll.
(c) Solar energy is used to break water into hydrogen and oxygen. This hydrogen is combined with carbon dioxide to form food for the plants, which is ultimately used by the animals as well.
Posted by Gollapudi Santosh 7 years, 6 months ago
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Jhumur Roy 7 years, 6 months ago
Posted by Gollapudi Santosh 7 years, 6 months ago
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Rahul Sharma 7 years, 6 months ago
Posted by Gollapudi Santosh 7 years, 6 months ago
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Sanskriti Suhani 7 years, 6 months ago
Posted by Het Patel 7 years, 6 months ago
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Sonali Aggarwal 7 years, 6 months ago
Convex lens are called converging lens because when a ray of light is passed through it coverges the ray towards principal axis as they are bulging out in shape.
Posted by Vaishnavi Urankar 7 years, 6 months ago
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Posted by Aman Kumar 7 years, 6 months ago
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Aman Kumar 7 years, 6 months ago
Gollapudi Santosh 7 years, 6 months ago
Posted by Durga Pramod 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
A chlorophyll containing partner, which is an alga and a fungus live together. The fungus provides shelter, water and minerals to alga and in return the alga provides food which is prepared by photosynthesis by alga. Lichens are composite organisms composed of fungus and alga. Fungus is a saprophyte and alga is an autotroph. The Fungus supplies water and minerals to the cells of the alga while the alga supplies food; prepared by photosynthesis.
Posted by Ramanti Nuwal 7 years, 6 months ago
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Binash Maryam 7 years, 6 months ago
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