Explore topic-wise InterviewSolutions in .

Xylem is a Vascular and mechanical tissue . In other words , it is a conducting tissue . Xylem is composed of cell ( called elements ) of four different types :1) Tracheids 2) Vessels or tracheae 3) Xylem parenchyma and4) Xylem scleroderma ( or fibre ) .

FUNCTIONS OF XYLEM

1) The main function of xylem is to carry water and mineral salts upward from the root to different parts of shoots .

Like my answer if you find it useful!

Xylem is a plant tissue used to transport water from roots to other plant parts.4 elements r :- 1)tracheids :- Provide mechanical support.2)tracheae :- Helps in transporting water and dissolved minerals.3)xylem parenchyma:- Stores food and transports water and minerals .4)xylem fibre:-Provide of mechanical support.

The following three points will highlight the three major types of transpiration.(1) Stomatal Transpiration (2) Lenticular Transpiration(3) Cuticular Transpiration.

A -VacuoleThe central vacuole of a plant cell helps maintain its turgor pressure, which is the pressure of the contents of the cell pushing against the cell wall.

B-Cell wallThe cell wall is a tough layer found on the outside of the plant cell that gives it strength and also maintains high turgidity

C- Cell membranethe plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.

D- CytoplasmCytoplasm provides mechanical support to the internal structures. It is the medium for suspension for the internal organelles of the cell.

E- NucleusThe nucleus contains a cell’s deoxyribonucleic acid (DNA), its genetic material. DNA contains instructions for making proteins, which controls all of the body’s activities. The nucleus also regulates the growth and division of the cell.

Pancreasare known to have a dual function because it acts as both an endocrine gland and exocrine gland i.e. it is a part of both the hormonal and digestive system of the body respectively. So, it is also called heterocrine gland. Itsecreteshormones insulin and glucagon as well as digestive enzymes.

Pancreasare known to have a dual function because it acts as both an endocrine gland and exocrine gland i.e. it is a part of both the hormonal and digestive system of the body respectively. So, it is also called heterocrine gland. Itsecreteshormones insulin and glucagon as well as digestive enzymes.

Enzymes are biological catalyst which usually speed up various biochemical reactions occurring in the body. All enzymes are not digestive in nature. The ones which do not help in digestion of any substance are known as non- digestive enzymes.

In intestine, various enzymes help in digestion but are in inactive state. The enzymes which help in activation of these enzymes are some of the non-digestive enzymes in the intestine.

Ferricyanide is the anion [Fe(CN)₆]3−. It is also called hexacyanoferrate(III) and in rare, but systematic nomenclature, hexacyanidoferrate(III)

Hexafluorocobaltate(III), [CoF6]3-,CoF6]3-: sp3d2hybridisation;octahedralshape, 4unpairedelectrons, i.e.paramagnetic. [Ni(CN)4]2-:dsp2hybridisation, square planar shape, nounpairedelectrons,diamagnetic

substance, usually produced by plants and animals, which helps a chemical change to happen more quickly, without being changed itself

Enzymesare biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells. They are vital for life and serve a wide range of important functions in the body, such as aiding in digestion and metabolism.

Enzymes are biological molecules that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.

a substance, usually produced by plants and animals, which helps a chemical change to happen more quickly, without being changed itself

(प्रायः पौधों और पशुओं द्वारा उत्‍पादित) एक प्रकार का पदार्थ जो रासायनिक परिवर्तन के घटित होने में सहायता करता है परंतु स्‍वयं परिवर्तित नहीं होता; एन्‍ज़ाइम

Enzymes are very efficient catalysts for biochemical reactions. They speed up reactions by providing an alternative reaction pathway of

Enzymes are biological molecules that significantly speed up the rate of virtually of the chemical recations thattake place within cells,They are vital forlife and serve a wide range of important functions in body

Enzymes are very efficient catalyst for biochemical reactions. they speed up reactions by providing an alternative reaction pathway of

Enzymes are biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells. They are vital for life and serve a wide range of important functions in the body, such as aiding in digestion and metabolism.

Enzymes=aremacromolecularbiologicalcatalysts. Enzymes acceleratechemical reactions. The molecules upon which enzymes may act are calledsubstratesand the enzyme converts the substrates into different molecules known asproducts

Enzymes:-

1.

All enzymes are proteins, except few (composed of RNA, e.g, hammerhead ribozyme)

2.

They are macromolecules with higher molecular weight

3.

They are non-diffusible through cell membrane

4.

They either act intracellularly or carried by some ducts to another site

5.

Always act as biological catalysts and increases the rate of metabolic physiological processes.

6.

They catalyze reversible or irreversible reactions.

7.

Reaction rate increases with increase in their concentration up to a limit.

8.

They act quickly



Hormones :-

1.

They may be proteins, amines or steroids

2.

They have only low molecular weight

3.

They are diffusible through cell membrane

4.

Generally carried by blood to a target organ

5.

They may be either excitatory or inhibitory in their action

6.

Hormone controlled reactions are not reversible

7.

Deficiency or overproduction of hormone causes metabolic disorders or diseases

8.

Some hormones are quick acting, while some are slow acting with a lag period.

this is above my brain level! 😥

it contains many terms which I've not listened or read ..can you please give me an answer in a simple language Accordinh to 10th standard

Could you tell me which terms you don't understand and I'll try to explain them as simply as possible.

macromolecules

excitatory, inhibitory

macromolecule is a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.

okay

Excitatory means promoting a state of excitation i.e. increased activity of anything, inhibitory is the exact opposite.

Thankyouuuu !!

enzymes are secreted by exocrine glands.hormones are secreted by endocrine glands.

The water doesn't become that dirty because water keep flowing. So, the dirty water doesn't stay at one place.

When a receptor is stimulated, it sends a signal to the central nervous system, where the brain co-ordinates the response. But sometimes a very quick response is needed, one that does not need the involvement of the brain. This is a reflex action. Reflex actions are rapid and happen without us thinking.

Thnx ji

The immediate response of a person to stimuli is called reflex actions. For example - sneezing or when you touch some thorns you immediately remove your hand.

परमाणु भार के लिए एक व्यवस्थित माप की अवधारणा ने मेंडेलीव की आवर्त सारणी की सफलता में बहुत योगदान दिया। 1864 में, लगभग 50 तत्वों के साथ ज्ञात, ब्रिटिश रसायनज्ञ जॉन न्यूलैंड्स ने एक पैटर्न पर ध्यान दिया जब उन्होंने तत्वों को परमाणु द्रव्यमान, या वजन के क्रम में व्यवस्थित किया।

Fat molecules are made up of four parts: a molecule ofglycerol(on the right) and. three molecules offatty acids

Fatsaredigestedin the small intestine. The secretion of liver, called bile, breaks down the large globules offatinto smaller globules.

The bile also makes the medium alkaline so that the pancreatic enzyme containing lipase furtherdigest fatsto form fatty acids.

Like my answer if you find it useful!

Fatsaredigested in thesmall intestine. The secretion of liver called bile, breaks down the large globules offatinto smaller globules. This is called emulsification offats. The bile also makes the medium alkaline sothat the pancreatic enzyme containing lipase further digestsfatsto form fatty acid.

Examples of oilseeds that provide us fats are safflower, sunflower and jatropha.

PLEASE HIT THE LIKE BUTTON

Ans :- 1- fats are made up of fatty acidsthat are connected together by another molecule, glycerol.

AIDS is caused by infection with the human immunodeficiency virus (HIV).

The malleus (Latin: "hammer") articulates with the incus through the incudomalleolar joint and isattached to the tympanic membrane(eardrum), from which vibrational sound pressure motion is passed.

Please hit the like button if this helped you

Step 1

Place some germinating gram or pea seeds in the conical flask. Insert the shorter end of the glass tube through the hole in the cork and fix it on the conical flask.

Step 2

Hang a test tube containing KOH solution inside the conical flask with the help of a thread. Fix the cork.

Step 3

Take coloured water in the beaker and keep the longer end of the glass tube dipped inside it. Apply some Vaseline on the rim of the conical flask to make it airtight. Note the level of water in the tube.

Step 4

After an hour observe and note the rise in the water level without disturbing the apparatus. Water level rises in the bent tube.

This shows that CO2 is produced by the germinating seeds during respiration.

The germinating seeds respire and produce CO2. The KOH solution absorbs it. Due to this a vacuum is created in the conical flask. The air in bent glass tube moves to the conical flask. As a consequence the water level rises in the bent tube.

First aid includes removing thechemicalthat caused theburn and rinsing the skin under running water for 10 to 20 minutes. If achemicalcame into contact with the eyes, rinse the eyes continuously for at least 20 minutes before seeking emergency care.

put it in the fire then automatically fire give the first aid

1. If you suspect that someone has a broken bone, provide first-aid treatment and help them get professional care:

Stop any bleeding:If they’re bleeding, elevate and apply pressure to the wound using a sterile bandage, a clean cloth, or a clean piece of clothing.Immobilize the injured area:If you suspect they’ve broken a bone in their neck or back, help them stay as still as possible. If you suspect they’ve broken a bone in one of their limbs, immobilize the area using a splint or sling.Apply cold to the area:Wrap an ice pack or bag of ice cubes in a piece of cloth and apply it to the injured area for up to 10 minutes at a time.Treat them for shock:Help them get into a comfortable position, encourage them to rest, and reassure them. Cover them with a blanket or clothing to keep them warm.Get professional help:Call the ambulance Hutu or help them get to the emergency department for professional care.

2. To manage a nosebleed include:Reassure the person, especially children, as crying increases blood flow.Sit the person up straight and drop their head slightlyforward.Apply finger and thumb pressure on the soft part of nostrils below the bridge of the nose for at least 10 minutes.Encourage the person to breathe through their mouth while their nostrils are pinched.Loosen tight clothing around the neck.Place a cold cloth or cold pack over the person’s forehead and one around the neck, especially around the sides of the neck.After 10 minutes, release the pressure on the nostrils and check to see if the bleeding has stopped.If bleeding persist, seek medical aid.Tell the person not to sniff or blow their nose for at least 15 minutes and not to pick their nose for the rest of the day. (Having a nose full of clotted blood is unpleasant and children in particular may find it difficult to avoid sniffing or nose blowing for a few hours. Fifteen minutes will at least give some time for the clot to stabilise.)You should go to the doctor or a hospital emergency department if the bleeding does not stop after simple first aid management. It is important to find and treat the cause of ongoing bleeding.

3. Treating Dehydration

1. Take Fluids

Ask your doctor what fluids are best for you or your child. Here are some basic tips:Give an adult plenty of clear fluid, like fruit juices, soda, sports drinks and clear broth. Avoid milk or milk-based products, alcohol, apple juice, andcaffeinewhile you havediarrheaand for 3 to 5 days after you get better. They may make diarrhea worse.Give a child orinfantfrequent sips of a rehydration solution such asPedialyte, CeraLyte, or Infalyte. Do not add salt tablets to a baby’s bottle.Make sure the person drinks more fluids than they are losing through diarrhea. If they are unable to keep up with their losses, call a doctor.

2. Rest

Have the person rest as needed and avoid strenuousexercise. Keep a sick child home from school orday care.

3. Ease Into EatingFeed aninfantor child easily digested foods; theBRAT diet(bananas, rice, applesauce, and toast) is a good choice as soon as they can tolerate food.For an adult, add semisolid and low-fiber foods gradually as diarrhea stops. Avoid spicy, greasy, or fatty foods.

3. When to Call a Doctor

Call a doctor if:You suspect that you or your child is dehydrated.Aninfant3 months old or younger hasvomitingor diarrhea.There isbloodor mucus in the stool, or the stool is black.An over-the-counter diarrhea medication seems to have worsened the diarrhea.You think the person hastraveler’s diarrheaor drank contaminated water.The person is taking an antibiotic that may be causing the diarrhea.There is stomach pain that is not relieved by having abowel movement.There is a fever.The person is losing more fluid in his stool than he can replace by drinking fluids.

4. To care for a dog bite injury at home:

Place a clean towel over the injury to stop any bleeding.Try to keep the injured area elevated.Wash the bite carefully with soap and water.Apply a sterile bandage to the wound.Apply antibiotic ointment to the injury every day to prevent infection.

5. For All Burns

1. Stop Burning Immediately

Put out fire or stop the person's contact with hot liquid, steam, or other material.Help the person "stop, drop, and roll" to smother flames.Remove smoldering material from the person.Remove hot or burned clothing. If clothing sticks to skin, cut or tear around it.

2. Remove Constrictive Clothing Immediately

Take off jewelry, belts, and tight clothing. Burns can swell quickly.

Then take the following steps:

For First-Degree Burns (Affecting Top Layer of Skin)

1. Cool Burn

Hold burned skin under cool (not cold) running water or immerse in cool water until pain subsides.Use compresses if running water isn’t available.

2. Protect Burn

Cover with sterile, non-adhesive bandage or clean cloth.Do not apply butter or ointments, which can cause infection.

3. Treat Pain

Give over-the-counter pain reliever such asibuprofen(Advil,Motrin),acetaminophen(Tylenol), ornaproxen(Aleve).

I also want about 2nd degree and 3rd degree burn

First aid is simple medical treatment given as soon as possible to a person who is injured or who suddenly becomes ill.

First aid is the assistance given to any person suffering a sudden illness or injury, with care provided to preserve life, prevent the condition from worsening, or to promote recovery

tysm

pranet <3

first aid is a box 📦

The answer is Option B.

x+9+6=3

One solution was found :

x = -12

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

x+9+6-(3)=0

Step by step solution :

Step1:

Solving a Single Variable Equation:

1.1Solve:x+12 = 0

Subtract12 from both sides of the equation:x = -12

One solution was found :

x = -12

Processing ends successfully

Let us assume that√5 is a rational number.we know that the rational numbers are in the form of p/q form where p,q are intezers.

so,√5 = p/q

p =√5q

we know that 'p' is a rational number. so√5 q must be rational since it equals to pbut it doesnt occurs with√5 since its not an intezer

therefore, p =/=√5q

this contradicts the fact that√5 is an irrational numberhence our assumption is wrong and√5 is an irrational number.

The biggest driver of deforestation is agriculture. Farmerscutforests to provide more room for planting crops or grazing livestock. Often, small farmers will clear a few acres bycutting down treesand burning them in a process known as slash and burn agriculture.

Recyclingpaperconserves natural resources, saves energy, reduces greenhouse gas emissions, and keeps landfill space free for other types of trash that can't berecycled.

reuse...=we have to reuse the materials ,so that we can use it again without any process

recycle ....=we have to recycle the material ,so that there must be a process of material which is important to change the material in new form

hence reuse is better than recycle

Reuse is better than recycling because for recycling some energy is used to recycle an object whereas no energy is required during reuse.

Reuse: The biggest question here is: does the item I’m getting rid of still have a useful life even though I don’t need it anymore? If the answer to that question is ‘yes’, then you’ll want to seek out that alternative that can take advantage of using the ‘still good’ item. This is definitely a positive thing because if the item is ‘still good’ and can continue to be used, then a new one doesn’t need to be made. This means less resources need to be used to serve the same purpose.

Recycling: This is the act or process of taking something and making it new again through a series of steps. This could simply putting a non-refillable glass bottle into your recycling bin/cart and having it sent to a bottle plant where it will be cleaned, crushed and melted down and made into a new container where it’s resold to a beverage company as ‘new.’ The difference between recycling and reuse is the act of breaking the item down or de-manufacturing it and then using those outputs to make something new.

Both of these are good options to manage materials. Unfortunately not everything that we can reuse can be recycled. Nor can those things we recycle always be reused. The important thing is to take into account if there is useful life left. If there is, try and reuse the item. If it can’t be used anymore but can be recycled, then that is what you should try and do.

Soil formation can be both by biotic and biotic factors.

Biotic factorsincludes biological i.e. living factors like plants, animals. When plants grow their roots penetrate deep inside the ground and result in breaking of soil particles and formation of soil. Certain lichens and microbes secrete substances which also leads to weathering (process of formation of soil) of rock and formation of soil. Human activities such as mining, digging also result in weathering and formation of soil.

Abiotic factorsmeans physical factors such as temperature, wind and water. When water flow with high speed it results in breaking of rocks. Wind also result in weathering when blow with high speed. The difference in the temperature of the day and night time results in expansion and contraction of the rocks leading to weathering and formation of soil.

Soil formation can be both by biotic and biotic factors.

Biotic factorsincludes biological i.e. living factors like plants, animals. When plants grow their roots penetrate deep inside the ground and result in breaking of soil particles and formation of soil. Certain lichens and microbes secrete substances which also leads to weathering (process of formation of soil) of rock and formation of soil. Human activities such as mining, digging also result in weathering and formation of soil.

Abiotic factorsmeans physical factors such as temperature, wind and water. When water flow with high speed it results in breaking of rocks. Wind also result in weathering when blow with high speed. The difference in the temperature of the day and night time results in expansion and contraction of the rocks leading to weathering and formation of soil.

Abiotic factors involved in soil formation are(a) Rocks (b) Water(c) Sun (d) WindBiotic factors involved in soil formation are(a) Lichens (b) Bryophytes(c) Bacteria (d) Fungi(e) Nematodes (f) Earthworm(g) Arthropodse.g., ants.

Five different forces have influenced humanevolution: natural selection, random genetic drift, mutation, population mating structure, and culture. Allevolutionarybiologists agree on the firstthreeof these forces, although there have been disputes at times about the relative importance of each force

monocots are fruit which can be simitrical and dicots are the fruit which can be cut in a symmetrical shape monocot example of groundnuts and dicot example are mangoes watermelon

Leaves emerge from the stem.

14th century:spectacles first made in Italy

1590:Two Dutch spectacle-makers and father-and-son team,Hans and Zacharias Janssen, create the first microscope.

1667: Robert Hooke's famous"Micrographia"is published, which outlines Hooke's various studies using the microscope.

1675:EnterAnton van Leeuwenhoek, who used a microscope with one lens to observe insects and other specimen. Leeuwenhoek was the first to observe bacteria. 18th century: As technology improved, microscopy became more popular among scientists. Part of this was due to the discovery that combining two types of glass reduced the chromatic effect.

1830: Joseph Jackson Listerdiscovers that using weak lenses together at various distances provided clear magnification.

1878:A mathematical theory linking resolution to light wavelength is invented byErnst Abbe.

1903: Richard Zsigmondy invents the ultramicroscope, which allows for observation of specimens below the wavelength of light.

1932:Transparent biological materials are studied for the first time usingFrits Xernike's invention of the phase-contrast microscope.

1938:Just six years after the invention of the phase contrast microscope comes the electron microscope, developed byErnst Ruska, who realized that using electrons in microscopy enhanced resolution.

1981:3-D specimen images possible with the invention of the scanning tunneling microscope byGerd BinnigandHeinrich Rohrer.

Dicots

The first leaves produces by a plant are called cotyledons or seed leaves. Plants with two seed leaves are called dicotyledons or dicots.

plant having two seed leaves are called dicotyledon

DEAR FRIEND HERE IS YOUR ANSWERPLANT HAVING TWO SEED LEAVES CALLED DICOTYLEDON.

Specieswithonecotyledon are calledmonocotyledonous ("monocots").Plants with twoembryonicleaves are termeddicotyledonous ("dicots"). ...Cotyledonsare formed during embryogenesis, alongwiththe root and shoot meristems, and are therefore present in theseedprior to germination.

DICOTYLEDON IS THE CORRECT ANSWER

a.. AIDS belong to a category of sexually transmitted disease. It is caused by human immuno deficiency virus. The viral infection is transmitted by sexual intercourse with a infected partner, application of injection previously used by a infected person, blood transfusion from a infected person.

b. The government wants to create awareness among the population regarding the transference of disease. The awareness will help individuals to take preventive measures such as use of contraception during sexual intercourse, avoiding intercourse with multiple partners and prevention of blood transfusion from an infected individual