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Ask QuestionPosted by Seema Seems Patidar 5 years, 2 months ago
- 1 answers
Posted by Eshwari Nagaraj 5 years, 2 months ago
- 2 answers
Yogita Ingle 5 years, 2 months ago
ploughing helps in turning the soil and also and uprooting weeds. Levelling (i.e. to level the soil) helps in the following ways:if we do not level the soil before sowing then at some places water would not reach and at some places water wuld accumlate and plants would die at one place bacause of lack of water and at other place because of excess water.
Posted by Angel Patel 5 years, 2 months ago
- 3 answers
Mishthy Gupta 5 years, 2 months ago
Pragya Jain 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
The rabi crops are sown around mid-November, preferably after the monsoon rains are over, and harvesting begins in April/May. The crops are grown either with rainwater that has percolated into the ground, or using irrigation.
Posted by Saurav Raj 5 years, 2 months ago
- 1 answers
Gaurav Seth 5 years, 2 months ago
Algae: Cell wall is made up of cellulose. Cells contain chloroplasts. Hence, these are green in colour. These are autotrophic. Cells are uninucleated. The reserve food is starch.
Fungi: Cell wall is made up of chitin. Cells do not contain chloroplasts. Hence, these are colourless. These are heterotrophic. Cells or hypha is uninucleated, binucleated or coenocytic. The reserve food is glycogen.
Posted by Anna Maria 5 years, 2 months ago
- 3 answers
Pragya Jain 5 years, 2 months ago
Khushboo Tiwari 5 years, 2 months ago
Gaurav Seth 5 years, 2 months ago
The process of conversion of atmospheric nitrogen into nitrogenous compounds and making it available for plants is called as nitrogen fixation. The organisms which fix nitrogen to plants are called as nitrogen fixers. Microorganisms in the soil convert atmospheric nitrogen into ammonium compounds, thereby enabling the survival of plants and animals.
Posted by Bhumi Sahu 5 years, 2 months ago
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Pragya Jain 5 years, 2 months ago
Posted by Gyanshu Rastogi 5 years, 2 months ago
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Posted by Yash Raut 5 years, 2 months ago
- 2 answers
Gaurav Seth 5 years, 2 months ago
The natural fibres require raw materials from plants and animals. So they lead to cutting trees and killing of animals. Synthetic fibres are made up of chemicals and these chemicals are not available in forests. So manufacturing synthetic fibres is actually helping conservation of forests.
Posted by Helping Friends 5 years, 2 months ago
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Posted by Eshwari Nagaraj 5 years, 2 months ago
- 2 answers
Gaurav Seth 5 years, 2 months ago
Cultivators are used to stir and pulverize the soil, either before planting (to aerate the soil and prepare a smooth, loose seedbed) or after the crop has begun growing to kill weeds. Unlike a harrow, which disturbs the entire surface of the soil, cultivators are designed to disturb the soil in careful patterns, sparing the crop plants but disrupting the weeds.
Yogita Ingle 5 years, 2 months ago
Cultivators can be used instead of the hoe. Cultivators are used to stir and pulverize the soil, either before planting (to aerate the soil and prepare a smooth, loose seedbed) or after the crop has begun growing to kill weeds. Unlike a harrow, which disturbs the entire surface of the soil, cultivators are designed to disturb the soil in careful patterns, sparing the crop plants but disrupting the weeds.
Posted by Vaidang Maheshwari 5 years, 2 months ago
- 4 answers
Khushboo Tiwari 5 years, 2 months ago
Gaurav Seth 5 years, 2 months ago
The SI unit of force is the newton, symbol N.
Force is the product of mass and acceleration
∴ Force = Mass × acceleration
The S.I unit of force is kg.m/s2 or Newton
1 Newton =105 Dyne
Posted by Anna Maria 5 years, 2 months ago
- 3 answers
Pragya Jain 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
Vaccines contain dead or weakened microbes of a particular disease. When a vaccine is introduced into a healthy body, the body fights and kills them by producing suitable antibodies. These antibodies remain in the body and protect it when the microbe enters the body again.
Posted by Digbijoy Debnath 5 years, 2 months ago
- 0 answers
Posted by Helping Friends 5 years, 2 months ago
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Pragya Jain 5 years, 2 months ago
Akshiii ?? 5 years, 2 months ago
Posted by Tiwari Srishti Rajendra 5 years, 2 months ago
- 1 answers
Yogita Ingle 5 years, 2 months ago
|
Combustible substance |
non-combustible substance |
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A substance which burns in air and tends to produce heat and light is known as Combustible substances. |
Non-combustible substances are certain substances which are not combustible in the presence of air. |
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Necessary ingredients – Heat, fuel and air |
Will not burn on being exposed to flame. |
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Examples – Diesel, petrol, kerosene. |
Examples – Glass, stones. |
Posted by Dharmendr Kumar 5 years, 2 months ago
- 2 answers
Subhalaxmi Prusty 5 years, 2 months ago
Posted by Akshiii ?? 5 years, 2 months ago
- 2 answers
Gaurav Seth 5 years, 2 months ago
the thermoplastic and thermosetting plastics.
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Thermosetting |
Thermoplastics |
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1. Thermosetting plastic cannot be easily bent but if we force to bend, it will break. |
1. We can bend thermoplastics easily. |
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2. On heating thermosetting plastics, it cannot be softened. This is the reason it cannot be reshaped once it is moulded. |
2. On heating the thermoplastics, it becomes softened and can be moulded and reshaped easily. |
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3. For example: - Bakelite and Melamine. |
3. Polythene and PVC are some of the examples of thermoplastics. |
Posted by Akshiii ?? 5 years, 2 months ago
- 2 answers
Gaurav Seth 5 years, 2 months ago
Food can be poisoned by microbes. Microbes produce toxic substances and thus, poison/ spoil the food. Consuming spoiled food can make us ill. Therefore it is very important to preserve food items so that microbes cannot grow & spoil them.
Microbes just don’t attack any food item, they need a suitable environment to grow & survive. Only then, they can release toxic substances and thus spoil the food. Some factors which promote growth of microbes are moisture, warm temperature etc.
Posted by Akshiii ?? 5 years, 2 months ago
- 3 answers
Yogita Ingle 5 years, 2 months ago
Manure is the decomposed form of dead plants and animals which is applied to the soil to increase the production. It is a natural form of fertilizer and is cost-effective. The human and animal excreta is also used as manure. The livestock manure is rich in nitrogen, phosphorus, and potassium.
Posted by Vicky Digra 5 years, 2 months ago
- 5 answers
Posted by Anand Joshi 5 years, 2 months ago
- 1 answers
Sneha Ramparia 5 years, 2 months ago
Posted by Anand Joshi 5 years, 2 months ago
- 3 answers
Sneha Ramparia 5 years, 2 months ago
Posted by Yash Kadav 5 years, 2 months ago
- 2 answers
Gaurav Seth 5 years, 2 months ago
Answer : Acrylic
Explanation :
Acrylic is a man-made fibre . Acrylic is known as artificial wool or synthetic wool because it resembles wool . Acrylic is cheaper than natural wool and can be dyed in various colour . This makes acrylic is very popular among other fabrics .
Posted by Krishan Kumar Mahawar 5 years, 2 months ago
- 1 answers
Gaurav Seth 5 years, 2 months ago
Can be Recycled : Toys , carry bags , plastic bowls , ball point pens , plastic chairs , plastic covering on electrical wires .
Cannot be Recycled : Cooker handles , electrical switches , telephone instruments .
Posted by Kiran Joshi 5 years, 2 months ago
- 1 answers
Yogita Ingle 5 years, 2 months ago
If wheat is sown in the kharif season (from June to October), then the whole crop might get destroyed because of many factors such as lack of optimum temperature, adaptability, availability of pests, etc. Kharif season includes the rainy season, which is not favourable for the growth of wheat crop. Therefore, wheat crop should not be sown during this season.
Posted by Saraswati Shishu Mandir Karnawad 5 years, 2 months ago
- 2 answers
Posted by Vansh Malik 5 years, 2 months ago
- 1 answers
Gaurav Seth 5 years, 2 months ago
Consequences of deforestation:
- Soil erosion
- Loss of biodiversity
- Floods and droughts
- Climate change due to global warming
- Disruption of water cycle
Posted by Princi Kumari 5 years, 2 months ago
- 3 answers
Gaurav Seth 5 years, 2 months ago
c. An atom is defined as the structural and functional unit of a matter. The term "atom" comes from the Greek word which means indivisible, because atoms are the smallest things in the universe and could not be divided. atoms are made up of three subatomic particles like protons, neutrons and electrons.
Gaurav Seth 5 years, 2 months ago
B.
DNA is important due to the following reasons:
1) DNA plays a crucial role in research, and also to carry out different tasks pertaining to fields such as forensic science, genealogy, agriculture, medicine, etc.
2) Through the assessment of DNA, the paternity of a child can be identified, which has a significant effect on the child's upbringing and his or her life.
3) DNA is essential for the life of the human cell.
4) DNA codes for all the cell proteins that make life possible. The cell transcribes DNA into RNA, which it then translates into proteins. These include the enzymes, hormones and structural proteins that each cell needs.
5) Required for reproduction.
6) Cell division is essential for an organism to grow, but, when a cell divides, it must replicate the DNA in its genome so that the two daughter cells have the same genetic information as their parent.
Gaurav Seth 5 years, 2 months ago
a. In 1665, Robert Hooke examined a thin slice of cork and observed that it consists of many little compartments, resembling a honeycomb structure. He made this observation through a self-designed microscope. He termed these boxes as cells, which is a Latin word for ‘a little room".
Posted by Subhalaxmi Pradhan 5 years, 2 months ago
- 1 answers
Gaurav Seth 5 years, 2 months ago
The process in which the heavy nucleus of a radioactive atom ( such as uranium, plutonium or thorium ) splits up into smaller nuclei when bombarded with low energy neutrons, is called nuclear fission.
Posted by Anuj Kumar 5 years, 2 months ago
- 1 answers
Manoj Pal 5 years, 2 months ago
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