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Ask QuestionPosted by Ansita Smita Pani 5 years, 5 months ago
- 3 answers
Yogita Ingle 5 years, 5 months ago
Sericulture involves rearing of silkworms to obtain silk from them. Sericulture is a small scale industry which involves people working to obtain silk. Silk worm is reared right from its egg stage cocoons are collected. These are boiled in hot water to kill the worms in it. Silk coiled in the cocoon is collected, washed, dyed, reeled onto threads.These silk threads are used to weave cloth form them.
Nisha Choudhary 5 years, 5 months ago
Posted by ? ? 5 years, 5 months ago
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Mayank Kumar 5 years, 5 months ago
Posted by Rashmi Kumar 5 years, 5 months ago
- 5 answers
Teja 16 5 years, 5 months ago
Kamalika Samadder 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
The organisms that feed on plants are called herbivores. For example, deer, goat, sheep.
Pranav Gautam 5 years, 5 months ago
Posted by ??Arghyarupa?? 5 years, 5 months ago
- 1 answers
Yogita Ingle 5 years, 5 months ago
Hair is made up of proteins, which are dead cells. They are attached to the scalp with living cells, from where they grow. So, while getting a haircut a person does not feel pain because dead cells are being cut, but when it is pulled from scalp the living cells are also being pulled along.
Posted by ??Arghyarupa?? 5 years, 5 months ago
- 1 answers
Gaurav Seth 5 years, 5 months ago
Cotton clothes are thin and do not have space in which air can be trapped. Thus, cotton clothes do not prevent heat coming out of our body. Woollen clothes keep us warm during winter because wool is a poor conductor of heat and it has air trapped in between the fibres
Posted by ??Arghyarupa?? 5 years, 5 months ago
- 3 answers
Shripad B 5 years, 5 months ago
Gaurav Seth 5 years, 5 months ago
keratin
Nails and hair are essentially made up of a tough protective protein called keratin. While the hair grows in a hair follicle, nails grow from the matrix (the base of the nail bed).
Posted by ??Arghyarupa?? 5 years, 5 months ago
- 2 answers
Gaurav Seth 5 years, 5 months ago
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Excessive use of fertilizers damages the plants and reduces soil fertility.
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Leaching occurs and the fertilizers reach the rivers causing eutrophication.
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Long term use reduces the microbial activity and disturbs the pH of the soil.
Yogita Ingle 5 years, 5 months ago
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Excessive use of fertilizers damages the plants and reduces soil fertility.
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Leaching occurs and the fertilizers reach the rivers causing eutrophication.
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Long term use reduces the microbial activity and disturbs the pH of the soil.
Posted by ??Arghyarupa?? 5 years, 5 months ago
- 1 answers
Gaurav Seth 5 years, 5 months ago
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Excessive use of fertilizers damages the plants and reduces soil fertility.
-
Leaching occurs and the fertilizers reach the rivers causing eutrophication.
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Long term use reduces the microbial activity and disturbs the pH of the soil.
Posted by ? ? 5 years, 5 months ago
- 3 answers
Yogesh Kumar 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
All plants and animals require food for their growth and getting energy. The process of utilization of food by an animal to obtain energy for growth and development is known as nutrition.
Carbohydrates, proteins, fats, vitamins and minerals are essential components of food, these components are called nutrients
Posted by Aditya Raj 5 years, 5 months ago
- 0 answers
Posted by Raagavi Parthasarathe 5 years, 5 months ago
- 1 answers
Gaurav Seth 5 years, 5 months ago
Acids in water solution dissociates H+ ions. Let us consider the reaction between water and hydrochloric acid (HCl). HCl in presence of water produces H+ ion. This ion cannot exist alone and hence combines with water molecules and forms H3O+. The reaction is as follows:
Base when dissolved in water produces OH- ion. Let us consider the reaction between water and sodium hydroxide NaOH. NaOH in presence of water produces OH- ion.
Therefore the neutralisation stands out as follows:
Posted by Nisha Choudhary 5 years, 5 months ago
- 5 answers
Varshini Nachinarkkiniyan 5 years, 5 months ago
Saksham Chugh 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
- Organisms which can make their own food from simple substances are called autotrophs.
- They are producers.
- For example, all green plants, cynobacteria, etc.
Posted by Ullas Gowda 5 years, 5 months ago
- 2 answers
Jaithra Paul 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
Animals often adapt themselves to the climatic conditions in which they are living. For example, a polar bear has a thick skin and a layer of fat and is adapted for Polar Regions. These conditions keep the animal warm.
Posted by Basheera Fatima 5 years, 5 months ago
- 5 answers
Divya Patkar 5 years, 5 months ago
Posted by Jaithra Paul 5 years, 5 months ago
- 2 answers
Tanuja Chaitanya 5 years, 5 months ago
Gaurav Seth 5 years, 5 months ago
When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.
The reaction is
CuSO4 (aq) + Fe (s) → FeSO4 (aq) + Cu (s)
Posted by Dhruv Gupta 5 years, 5 months ago
- 5 answers
Yogita Ingle 5 years, 5 months ago
- The clinical thermometer is used to measure body temperature, however, laboratory thermometer is not used for the purpose of measuring body temperature.
- The temperature range of clinical thermometers is 35°C to 42°C and that of laboratory thermometers is -10°C to 110°C.
- The least count of both the thermometers is different.
- The clinical thermometer is can be tilted while reading the temperature values whereas laboratory thermometer need to be kept upright.
Divya Patkar 5 years, 5 months ago
Jaismeen Gill 5 years, 5 months ago
Posted by Rekha Kumari 5 years, 5 months ago
- 2 answers
Gaurav Seth 5 years, 5 months ago
Breeding sheep with special characters,selective breeding (also called artificial selection) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotype traits (characteristics) by choosing which typically animal or plant males and females will sexually reproduce and have offspring together. Domesticated animals are known as breeds, normally bred by a professional breeder, while domesticated plants are known as varieties, cultivates, or cultivars. Two purebred animals of different breeds produce a crossbreed, and crossbred plants are called hybrids.
Posted by Ajit Sarangi 5 years, 5 months ago
- 5 answers
Jaithra Paul 5 years, 5 months ago
Divya Patkar 5 years, 5 months ago
Zishan Ahmad 5 years, 5 months ago
Gaurav Seth 5 years, 5 months ago
Autatrophs mean-
Auto-Self
Trophes- norishment {self-nourishment}
Autotrophs are the organisms which exhibit autotrophic mode of nutrition. Autotrophs are organisms which can synthesise their own food by the process of photosynthesis. Plants and some bacteria that can synthesise their own food and are called as autotrophs.
Ishta Mahour 5 years, 5 months ago
Posted by Divya Patkar 5 years, 5 months ago
- 4 answers
Varshini Nachinarkkiniyan 5 years, 5 months ago
Gaurav Seth 5 years, 5 months ago
- Plants that eat insects are called insectivorous plants. They trap and digest insects. Pitcher plant is the example of an insectivorous plant.
- The soil of marshy land is deficient in nitrogen. Plants living in marshy areas do not get nitrogen from the soil. To fulfill their nitrogenous needs, they need to eat insects.
Meghna Thapar 5 years, 5 months ago
Plants like pitcher plant are green and carry out photosynthesis to obtain a part of the food required by them. But they do not get the nitrogen from the soil in which they grow. So, insectivorous or carnivorous plants feed on insects to obtain the nitrogen needed for their growth. Once they obtain the nitrogen, the carnivorous plants are able to build enzymes, chlorophyll and other structures and carry out photosynthesis to make their own food. ... And, unlike carnivorous animals, carnivorous plants do not capture prey for food energy… but just for the required building blocks.
Posted by M M 5 years, 5 months ago
- 1 answers
Gaurav Seth 5 years, 5 months ago
Kepler’s 2nd law: Law of Areas
Statement:-The line that joins a planet to the sun sweeps out equal areas in equal intervals of time.
- Area covered by the planet while revolving around the sun will be equal in equal intervals of time. This means the rate of change of area with time is constant.
- Suppose position and momentum of planet is denoted by ‘r’ and ‘p’ and the time taken will be Δt.
- ΔA=1/2xrxvΔt (where vΔt is distance travelled by a planet in Δt time.)
- ΔA / Δt =1/2(rxv)
- where
- (Linear momentum) p=mv or we can write as
- v =p/m
- =1/2m(rxp)
- =1/2 L/2m where L= angular momentum(It is constant for any central force)
ΔA / Δt = constant (This means equal areas are covered in equal intervals of time).
Posted by Pranav Prabhakar 5 years, 5 months ago
- 2 answers
Posted by Pranav Prabhakar 5 years, 5 months ago
- 1 answers
Yogita Ingle 5 years, 5 months ago
Mass (m) = 1.35 kg
Side (a) = 15 cm = 0.15 m
Volume of a cube = side x side x side = 0.153 =0.003375 cu. M
Density (ρ) = Mass (m) / Volume (V)
=> ρ = 1.35/0.003375
=> ρ = 400 Kg/m3
Posted by Souvik Mandal 5 years, 5 months ago
- 1 answers
Yogita Ingle 5 years, 5 months ago
Rearing and breeding of sheep :
- Apart from grazing sheep, rearers also feed them on a mixture of pulses, corn, jowar, oil cakes (material left after taking out oil from seeds) and minerals and In winter, sheep are kept indoors and fed on leaves, grain and dry fodder.
- Sheeps are reared in many parts of our country and Certain breeds of sheep have thick coat of hair on their body which yieldsgood quality wool in large quantities.
- Once the reared sheep have developed a thick growth of hair, hair is shaved off for getting wool.
Posted by Cdt. Devansh Bhayani 5 years, 5 months ago
- 3 answers
Posted by Dharam Veer 5 years, 5 months ago
- 1 answers
Yogita Ingle 5 years, 5 months ago
The transfer of heat because of movement of the molecules of the medium; via mass transfer; is called convection or convection of heat.
Water and air are bad conductors of heat. But they do become hot, in spite of being bad conductors. Heat transfer in fluids takes place through convection.
Posted by Sofia Malik 5 years, 5 months ago
- 1 answers
Yogita Ingle 5 years, 5 months ago
Mosquito-Throughout their movements in the ingestible parts, drops of an alkaline 'liquid saliva' are ejected and immediately ingested in rapid succession at the tips of the stylets.
Frog-frog's food goes through the digestive system and is then eliminated through a hole in the body.
Eagle-eagles have a highly efficient digestive system. Food is swallowed and passes through the esophagus to the crop, where it can be stored. ... Undigested food (bones and fur) regurgitated back up through the mouth as a pellet food pass.
Posted by . . 5 years, 5 months ago
- 4 answers
Posted by Suresh Chinnasamy 5 years, 5 months ago
- 1 answers
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Teja 16 5 years, 5 months ago
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