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5751.

Bats can fly like birds but they are not placed in Aves. JUSTIFY

Answer» Bats are mammals because they have mammary glands, they give birth to young ones, presence of hair on the body.They don\'t reproduce by laying eggs.They give birth to young ones.
5752.

what causes AIDS and what are its symptoms? How can it prevented and control?

Answer» AIDS is a disease that can develop in people with HIV. It’s the most advanced stage of HIV.Symptoms of AIDS can include:\trecurrent fever\tchronic swollen lymph glands, especially of the armpits, neck, and groin\tchronic fatigue\tnight sweats\tdark splotches under the skin or inside the mouth, nose, or eyelidsPrevention and Control\tSafe ***. Using a new, un-compromised condom during *** prevents the transmission of virus through open sores or open skin.\tOccupational safety. Medical care providers and scientists who frequently treat patients or handle patient samples must use personal protection equipment and follow safety guidelines set by their respective institutions.\tNeedle exchange programs. These programs provide sterile needles to those who inject drugs.
5753.

What is mariculture?

Answer» Mariculture is a specialized branch of aquaculture which involves the cultivation of marine organisms for food and other products in the open ocean. Mariculture helps in production of marketable food, to remove toxicity of sewage water, to produce substances for industrial use, medicinal use and food processing industries.
5754.

Mention any two precaution while preparing a Mount of human cheek cell

Answer» 1. Overstaining and understaining should be avoided.2. Folding of the peel should be avoided.3. Clean and dry glass slide and coverslip should be used.4. Cover slip should be kept gently on the slide to avoid entry of air bubbles.\xa0
5755.

How did Newton guess the Inverse Square rule obeyed by the gravitational force

Answer» According to the inverse-square law of gravitaion, the force of gravitation on a planet should decrease as the square of the distance of the planet from the sun.Newton further showed that the gravitational force is proportional to the product of the masses of the two objects.Thus, Newton formulated the universal law of gravitation.\xa0
5756.

Why are protozoans regarded as early animals?

Answer»
5757.

At which place on the earth the acceleration due to gravity is zero?

Answer»
5758.

How does one Pascal differ from one newton?

Answer» Newton is the SI unit of force.Pascal is the SI unit of pressure.1 Pascal is equal to 1 Newton over a square meter.Pa = N/m2Some conversions of Pa:1 kilo Pascal (kPa) equals 1000 Newtons over a square meter.1 mega Pascal (MPa) equals 1 Newton over a square millimeter, or 1 million newtons over a square meter.
5759.

Kuch what is the function of areolar tissue

Answer» Functions of areolar tissue.(i) It fills the space inside the organs, thus acts as a packing tissue between the organs.(ii) It supports many delicate organs in the body.(iii) It plays role in repair of tissues.
5760.

Write the chemical formula of sugar

Answer» The chemical or molecular formula for sucrose/sugar is :C12H22O11which means each molecule of sugar contains 12 carbon atoms, 22 hydrogen atoms and 11 oxygen atoms.
5761.

What are the similarities between plasma membrane and cell wall

Answer» \xa0\tPlasma MembraneCell WallPlasma Membrane is a delicate, thin structure of around 5-10nm wide and is visible under electron microscope, and it is present in all types of cell, helps in the passage of molecules and protects the protoplasm.Cell Wall is a thick, rigid structure of around 4-20um wide and is visible under light microscope; it is present in plant cell, bacterial and fungal cell, helps in providing shape and rigidity to the cell.Cell Wall is present in the plant cell, bacteria, fungi and algae.Cell Wall is present in the plant cell, bacteria, fungi and algae.Made up of lipids and proteins and carbohydrates.Made up of cellulose (plant cell), chitin (fungi), and peptidoglycan (bacteria).\t\xa0
5762.

How do we experiment onion peel

Answer» Ncert mein given hai
Pta ni
5763.

Write short nots an:(a) Typhoid (b) Malaria

Answer» An infectious bacterial fever with an eruption of red spoots on the chest and abdomen and severe intestinal irritation is called typhoidMalaria- it is an infectious disease caused by protoza
5764.

What is the mass of protons

Answer» 1.67 *10power-24
1.67*10power_24
5765.

How genetically modified crops can be obtained

Answer» GMO’s are created in the laboratory using scientific methods like Recombinant DNA technology and Reproductive cloning.In Recombinant DNA technology, one or more genes of one organism are inserted into another organism’s DNA. On the other hand, Reproductive cloning involves the extraction of the nucleus from the cell of the organism that needs to be cloned and it is inserted into the cytoplasm present in the cell of another organism. This results in their creation.
Through intergeneric hybridisation
\t\t\tMeaningManure is a natural material, obtained by decaying plant and animal waste, that can applied to the soil to enhance its fertility.Fertilizer is a human-made or natural substance, that can be added to the soil to improve its fertility and increase the productivity.PreparationPrepared in fieldsPrepared in factoriesHumusIt provides humus to the soil.It does not provide humus to the soil.NutrientsComparatively less rich in plant nutrients.Rich in plant nutrients.AbsorptionSlowly absorbed by plantsQuickly absorbed by plantsCostIt is economicalIt is costlySide effectThere is no side effect, in fact it improves the physical condition of soil.It causes harm to the living organism present in the soil.\t
5766.

Compare the use of manure and fertilizer in maintaining soil fertility

Answer» BASIS FOR COMPARISON MANURE FERTILIZER
5767.

Tel me structur of a hydrogen atom

Answer» A hydrogen atom is an atom of the chemical element hydrogen ?
5768.

Name the two types of processes occuring in neuron.

Answer» To receive message and to convey messagr
5769.

What is meant by sounds

Answer» Sound is form of energy which gives us sensation of hearing....Sound travel fastest in solid
Sound is a form of energy and it comes from vibrations. These vibrations create sound waves which move through mediums such as air and water before reaching our ears. Sound is produced due to the vibration of objects. Vibration is the rapid to and fro motion of an object.
Sound is a form of energy which enables us to hear....
5770.

Short note on kidneys

Answer» Kidney: Kidney is a bean-shaped organ which lies near the vertebral column in the abdominal cavity. The kidney is composed of many filtering units; called nephrons. Nephron is called the functional unit of kidney.
5771.

What is immune system

Answer» Body\'s self defence mechanism which helps us to protect from diseases
While protect our body from viral disease and foreign organisms
5772.

What\'s phylem

Answer» as per we know Kingdom?phylum?class?order?family?genus?species So phylem is group of classes
5773.

Human body is of atom or cell

Answer» Our body is made up of so many cells a its true that atom is not a living Substance
Our body is made up of living substance know as cell but the atom were not living substance .So, our body is made up of cell
Yes human body is made up of atoms or cell because cell is made up of molecules, molecules are made up of elements and elements are made up of atoms...
5774.

What is the chemical formula of aluminium sulphide

Answer» Aluminum oxide has a chemical formula Al2O3. It is amphoteric in nature, and is used in various chemical, industrial and commercial applications. It is considered an indirect additive used in food contact substances by the FDA. Aluminum oxide is a white odorless crystalline powder.
5775.

What is diffusion and its examples

Answer» Diffusion is the process in which molecules move from higher concentration to the lower concentration.
Diffusion is gaseous exchange between the cell contents and its external environment. Eg oxygen diffuses in water which is taken by aquatic animals to breathe. If you like the answer thank me.
5776.

Anything dissolve faster in hot water than in hot water

Answer» Your question is wrong
5777.

Where is neutrons , electrons and protons found

Answer» electron are found in discrete Orbit or cells called energy levels that are found inside the atom and outside the nucleus
neutron and Proton are found in the centre of the nucleus or in the nucleus
5778.

What is asseration

Answer»
5779.

Is it a good app for scoring 90% and above marks in cbse board?

Answer» Yes if we are using it properly then it is a good app......
5780.

What is balance force

Answer» Equal amount of force are applied from the both directions . Resultant of all the the force acting on a body is zero is called balance force.
A force where two forces of equal size, act on a body, in opposing directions is known as a Balanced Force. In Balanced Force, a body continues to be in its position i.e. it may be continuously moving with the same speed and in the same direction or it may be still in its position.Example of Balanced Forces- Suppose you are pushing a wall and as expected, the wall does not move and neither do you. It means that you and the wall are exerting a balanced force on each other.
when the resultant of all forces acting on a body is zero then the forces are called balanced forces.
5781.

Drawback of rutherfprd model

Answer» Drawbacks of Rutherford’s Model of an Atom\tRutherford’s atomic model could not explain how the moving electrons could remain in its orbit.\tAny charged particle during acceleration would give out energy; and while revolving it would lose energy and eventually fall into the nucleus.\tThis means that the atom would be highly unstable.\tBut, matter is composed of stable atoms.\t·Thus, the major drawback of Rutherford’s atomic model was that it could not explain the stability of atoms.
You can check in ncert book of science in 4th chapter
5782.

What is evaporation how can the evaluation of a liquid be made faster

Answer» Evaporation takes place when a liquid turns into a gas. Evaporation is also known as vaporization. Vaporization usually happens on the surface of the water. It is a slow process and occurs at all temperatures.Raising the temperature of water increases the kinetic energy of surface molecules, hastening the rate of evaporation. Moving air channels saturated air away from the liquid, effectively lowering concentrations of water and other substances in the local air.\xa0
5783.

Write the characteristics of nematoda.

Answer» The word nema toda means organisms with roundwarm they are bilateraly symetrical and triploblastic paracitic mode of nutrition psedocelmetes ,example ascaris
5784.

Explain the functioning of Ear

Answer» To hear .
5785.

what is the full form of SMT

Answer» Surface mount technology
5786.

What is the importance of nucleus

Answer» It also helps in carrying inherents from parents to off - spring because chromosomes contain genes and chromosomes are present in nucleus
It helps to control whole cell working like brain in humans
5787.

what is the full form SMT

Answer» Surface Mount Technology
what is the full form of SMT
5788.

What were the observation of rutherford in the gold foil experiment ?

Answer» Guntur???
Most of the space inside the atom was empty
Guntur
5789.

What is a ascariasis?

Answer»
5790.

Calculate the no. Of aluminium ions present in 0.051g of aluminium oxide

Answer»
5791.

What is the atomic mass of argon

Answer» Atomic number of Argon is : 18It is an inert gas.Atomic mass of Argon is: 39.9 amu
It is 40
5792.

Plant cell shrink when kept in hypertonic solution why?

Answer» Plant cell will not shrink because of the presence of the cell wall.
As osmosis is the passive movement of water from the region of higher water concentration to the region of lower water concentration ,and in hypertonic solution the surrounding medium is concentrated(here the concentration is of the substance present outside the cell)and that means water is less therefore water comes out through osmosis from the cell in order to qualize he concentration.
This is because exosmosis takes place, which means the water moves out of the cell
I don\'t no
5793.

What is variation of acceleration due to gravity?

Answer»
5794.

What is convex mirror

Answer» Concave mirror:if the inner surface of the spherical mirror is the reflecting surface then it is called concave mirror ✌️convex mirror:if the outer surface of the spherical mirror is the reflecting surface then it is called convex mirror.
5795.

Electro configuration

Answer»
5796.

How does efficiency of nutrients affect the crop?

Answer» Plant requires 16 elements for their growth.These includes macronutrients and micronutrients.Nitrogen,phosphorous and potassium are some macronutrients
5797.

Give points of difference between egg producing chicken and boiler producing chicken

Answer»
5798.

What are the different ways of hybridization

Answer» Hybridization is the process of mixing different species or varieties genetically to produce hybrids with new characteristics.Types of hybridization:1) Intervarietal hybridization: In this two parents from the same species are crossed.2) Distant hybridization : This includes intergeneric or interspecific that is parents belonging to different genus or species respectively.\xa0
5799.

Write a short note on malaria as a disease , its symptoms and control

Answer»
5800.

What are baic conditions of good health ?

Answer» The basic conditions for good health are the person ? should be mentally, physically and socially fit