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Ask QuestionPosted by Akhila Gupta 7 years, 3 months ago
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Posted by Humanjit Rabha 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
Xerophytes: These plants grow in dry conditions where water is limited. In dry regions all plants not confined to the sides of streams or lakes are considered xerophytes whereas in the regions of high rainfall, xerophytes would likely be represented only by some shallow-rooted plants in light sandy soils, by the vegetation on dry hill-tops and the cryptogamic flora of lichens, algae and mosses.
Example: Cactus
Posted by Mihir Chandratre 7 years, 3 months ago
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Garima Sengupta 7 years, 3 months ago
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Posted by Garima Grover 7 years, 3 months ago
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Meghna Thapar 6 years ago
Pencil lead is a conductor. It is made of graphite, which conducts electricity due to its free electron.
Posted by Sujata Bhimani 7 years, 3 months ago
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Bhawna Katyayan 7 years, 3 months ago
Sonam Mandal 7 years, 3 months ago
Posted by Alok Singh 7 years, 3 months ago
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Meghna Thapar 6 years ago
A hinge joint allows the movement of bones in only one direction, forwards and backwards. It occurs at elbow, knee, knuckles and jaw. However, In the ball and socket joint, one end of the bone has a round shape like a ball which fits into a socket in the other bone. The ball type end of one bone can turn freely in the socket of the other bone. It occurs at the shoulder joints and the hip joints.
Posted by Vikrant Singh 7 years, 3 months ago
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Posted by Sujata Bhimani 7 years, 3 months ago
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Meghna Thapar 6 years ago
Those organisms which can make food themselves from simple substances like carbon dioxide and water by the process of photosynthesis are called autotrophs and the process is called autotrophic nutrition.
Posted by Vedant Singh 7 years, 3 months ago
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Posted by Sakshi Choudhary 7 years, 3 months ago
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Riya Gandhi 7 years, 3 months ago
Yogita Ingle 7 years, 3 months ago
Luminous Object: An object which produces light is called a luminous object, The luminus objects are the objects that give out light . Examples of luminous objects are the sun,flame in a lamp,tube light.
Posted by Amrita Shekher 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
- Living beings respire.
- Living beings take food for nutrition.
- Living beings show locmotion and movement.
- Living beings show growth and it comes from inside.
- All living beings produce their own likes.
Posted by Amrita Shekher 7 years, 3 months ago
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Amrita Shekher 7 years, 3 months ago
Yogita Ingle 7 years, 3 months ago
The surrounding in which a living being lives is called its habitat. For example; the pond is the habitat for a frog. Our home is our habitat. A tree is the habitat for a squirrel.
Types of Habitat: There are two main types of habitat, viz. terrestrial habitat and aquatic habitat.
- Terrestrial Habitat: The habitat on land is called terrestrial habitat. The terrestrial habitat can be further categorized as forests, grasslands, coastal, mountain and desert habitats.
- Aquatic Habitat: The habitat in water is called aquatic habitat. The aquatic habitat can be further categorized as ocean, rivers, lakes, ponds and swamps.
Posted by Kajal Kansal 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
Threshing: Threshing is used for separating seeds from the harvested stalks.
- Manual Threshing: When the quantity is small, threshing is done manually. Small bundles of the harvested stalks are thrashed on a hard surface. This helps in separating the grains.
- Threshing by Animals: For larger quantities, threshing is done in the traditional way; by using animals. For this, stalks are spread around a pole. Several bullocks are tied to the pole and are made to walk over the harvested stalks. Trampling by hooves of the animals helps in separating grains.
- Threshing Machine: Now-a-days, threshing machines are used for the purpose. It can be powered by either a diesel engine or an electric motor. It helps in saving time and labour.
Posted by Sanjana R 7 years, 3 months ago
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Suneheri Samal 7 years, 3 months ago
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Nandini Trivedi 7 years, 3 months ago
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Trisha Singh 7 years, 3 months ago
Trisha Singh 7 years, 3 months ago
Posted by Abhinav Rajput 7 years, 3 months ago
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Meghna Thapar 5 years, 11 months ago
Hemopoiesis ( hematopoiesis) is the process that produces the formed elements of the blood. Hemopoiesis takes place in the red bone marrow found in the epiphyses of long bones (for example, the humerus and femur), flat bones (ribs and cranial bones), vertebrae, and the pelvis.
Posted by Amalkrishna A S 7 years, 3 months ago
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Meghna Thapar 6 years ago
An earthworm does not have bones or legs. It has muscles which help to lengthen and shorten the body. An earthworm’s body consists of liquid-filled segments joined together. The earthworm’s body has two types of muscles circular and longitudinal muscles.
During movement, the earthworm first extends the front part of the body, keeping the rear portion fixed to the ground. Then it fixes the front end and releases the rear end. Such repeated muscle expansions and contractions, the earthworm can move through soil.
The tiny bristles on the underside of earthworm’s body help in gripping the ground when a part of its body moves.
Posted by Hemansh Singh Singh 7 years, 3 months ago
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Abhijeet Kharche 7 years, 3 months ago
Posted by Neevesh Singh 7 years, 3 months ago
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Posted by Neevesh Singh 7 years, 3 months ago
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Meghna Thapar 6 years ago
The places in the body where two bones join together are called joints. The joints of the bones help in body movements.
Posted by Amanat Hussain 7 years, 3 months ago
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Meghna Thapar 6 years ago
Light travels in straight lines. The formation of shadow by a source of light suggests that light travels in straight lines. The shape of the shadow remains the same as the shape of the object because light travels in straight line path. The property of light travelling in straight lines is called rectilinear propagation of light.
Posted by Vishant Atrey 7 years, 3 months ago
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Meghna Thapar 5 years, 11 months ago
Magnet attracts materials like iron, nickel, cobalt. These are called magnetic materials. Materials that are not attracted towards magnet are called non-magnetic.
Posted by Vedika Jindal 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
Magnetic Materials: Materials which are attracted towards a magnet are called magnetic materials, e.g. iron, nickel and cobalt.
Materials which are not attracted towards a magnet are called non-magnetic materials, e.g. aluminium, zinc, wood, rubber, etc.
Posted by Ankit Sahu 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
Protein helps in body growth and repairs the tissues so it is also called body building food. We get protein from milk, eggs, meat, fish and all kinds of pulse. Protein molecule is made of a large number of smaller molecules called amino acid. When the body is building new tissue, more proteins are required, so growing children and pregnant lady need more protein.
Posted by Rathinakumar Sivakumar 7 years, 3 months ago
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Chesta Pawan Manchanda 7 years, 3 months ago
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