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Ask QuestionPosted by Bindusar Maurya 5 years, 7 months ago
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Posted by Bindusar Maurya 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
- Inspiration and expiration are two processes involved in respiration. Inspiration is the process of taking in of the air and expiration is the breathing out of the air.
- During inspiration, there is an increase in the volume of the thoracic area. The diaphragm becomes flattened and there is the relaxation of the intercostal muscles. This allows the increase in the thoracic cavity and allows the lungs to expand and take the air inside.
- During expiration, there is a decrease in the volume of the thoracic cavity due to diaphragm being dome-shaped and contraction of the intercostal muscles. This allows the lungs to push the air outside.
Posted by Bindusar Maurya 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
At the top of the trachea (or wind pipe) there is a flap of cartilage called epiglottis. The function of epiglottis is to cover the mouth of trachea (or wind pipe) when we swallow food so that the food may not enter the trachea (or wind pipe).
Posted by Aditya Jaiswal 5 years, 7 months ago
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Posted by ? Ishika ?? 5 years, 7 months ago
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Meghna Thapar 5 years, 6 months ago
Anaerobic respiration takes place in human muscles during vigorous physical exercise because oxygen gets used up faster in the muscle cells than can be supplied by the blood. The end-products of anaerobic respiration in muscles of human beings is lactic acid and in yeast cells, ethanol and carbon dioxide are released. Carbon dioxide and water are released during aerobic respiration. Large amount of energy is released in aerobic respiration as compared to anaerobic respiration.
Posted by ? Ishika ?? 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
The major events during photosynthesis are:
- absorption of light energy by chlorophyll
- conversion of light energy to chemical energy
- splitting of H2O into H2,O2 and energy
- reduction of CO2 to carbohydrates
Posted by ? Ishika ?? 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
The adaptations of leaf for photosynthesis are:
(i) Large surface area for maximum light absorption.
(ii) The presence of chlorophyll containing chloroplast.
(iii) The presence of numerous stomata on the surface for gaseous exchange.
Posted by Rajesh Kumar Pandit 5 years, 7 months ago
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Lucifer??Morningstar?? . 5 years, 7 months ago
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Posted by Madhu Chauhan 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
- Incident ray: A ray of light from a source that falls on the surface is called an incident ray of light.
- Reflected ray: The ray of light that bounces back from the surface of an object is called a reflected ray of light.
- Normal at point of incidence: A line drawn perpendicular on the surface (i.e. making 90° angle with the surface) of an object at the point of incidence is called a normal point of incidence.
Posted by Akash Ps 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
- Sun's heat which falls on the earth can be harnessed for various heating and lighting purposes.
- Most of the sun's heat is absorbed is the atmosphere.
- Only a very small portion reaches the earth and it is this energy that can be harnessed for energy purposes.
- A black surface absorbs more heat than a white surface.
- This property is used in Solar cookers, Solar water heaters and Solar cells.
Posted by Anushka ???? 5 years, 7 months ago
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Lucifer??Morningstar?? . 5 years, 7 months ago
Yogita Ingle 5 years, 7 months ago
The Prime Meridian is the imaginary line used to indicate 0∘ longitude that passes through Greenwich. It is also known as Greenwich Meridian because it passes through the place called Greenwich in London.
Posted by Anushka ???? 5 years, 7 months ago
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Aryan Choudhary 5 years, 7 months ago
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Posted by Ashok Kumar 5 years, 7 months ago
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Asha Kumari 5 years, 7 months ago
Yogita Ingle 5 years, 7 months ago
Bile helps to emulsify fats (increasing surface area to help enzyme action), and thus aids in their absorption in the small intestine. It also makes the acidic food coming from the stomach alkaline, so as to enable the action of pancreatic enzymes.
Posted by Alpana Paliwal 5 years, 7 months ago
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Attishe Dewan 5 years, 6 months ago
Posted by Mohammad Adnan 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
We should conserve forests and wildlife because they are essential for us in following terms:
(1) Forest provide us oxygen, they cause rain fall.
(2) Forest prevents soil erosion.
(3) Plants are dependent on animals and birds for their pollination and seed dispersal.
(4) Forests provide us various medicines.
(5) Various forest products are used as raw materials in industries.
Posted by Mohammad Adnan 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Tiger is one of the key wildlife species in the faunal web. In 1973, the authorities felt that the tiger population had dwindled to 1,827 from an estimated 55,000 at the turn of the century. Major threats to tigers are poaching for trade, shrinking habitat, depletion of prey based species, growing human population, etc.
Project Tiger' is one of the well-publicised wildlife campaigns in the world that was launched in 1973. In 1993, the population of tiger had dropped to 3,600. There are 39 tiger reserves in India.
Corbett National Park in Uttaranchal, Sunderbans National Park in West Bengal, Bandhavgarh National Park in Madhya Pradesh, Sariska Wildlife Sanctuary in Rajasthan, Manas Tiger Reserve in Assam and Periyar Tiger Reserve in Kerala are some of the tiger reserves of India.
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Kriti Singh 5 years, 7 months ago
1Thank You