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alcohol, aspirin, are absorbed by which parts of the human digestive system

Answer is Autumn Wood- dark colour, high density

answer is Autumn wood - dark colour, high density

White light.

White is not defined as a color because it is the sum of all possible colors.

Monera is a kingdom that contain unicellular organisms with a prokaryotic cell organization having no nuclear membrane hence no well defined nucleus.

3) is the right answer of the following

Companion cell is the correct answer

option a is the correct answer

option c is the correct answer

After pollen is deposited on the stigma, it must germinate and grow through the style to reach the ovule. The microspores, or the pollen, contain two cells: the pollen tube cell and the generative cell. The pollen tube cell grows into a pollen tube through which the generative cell travels. The germination of the pollen tube requires water, oxygen, and certain chemical signals. As it travels through the style to reach the embryo sac, the pollen tube’s growth is supported by the tissues of the style. In the meantime, if the generative cell has not already split into two cells, it now divides to form two sperm cells. The pollen tube is guided by the chemicals secreted by the synergids present in the embryo sac, and it enters the ovule sac through the micropyle. Of the two sperm cells, one sperm fertilizes the egg cell, forming a diploid zygote; the other sperm fuses with the two polar nuclei, forming a triploid cell that develops into theendosperm. Together, these two fertilization events in angiosperms are known asdouble fertilization.After fertilization is complete, no other sperm can enter. The fertilized ovule forms the seed, whereas the tissues of the ovary become the fruit, usually enveloping the seed.After fertilization, the zygote divides to form two cells: the upper cell, or terminal cell, and the lower, or basal, cell. The division of the basal cell gives rise to thesuspensor, which eventually makes connection with the maternal tissue. The suspensor provides a route for nutrition to be transported from the mother plant to the growing embryo. The terminal cell also divides, giving rise to a globular-shaped proembryo.In dicots (eudicots), the developing embryo has a heart shape, due to the presence of the two rudimentarycotyledons. In non-endospermic dicots, such asCapsella bursa, the endosperm develops initially, but is then digested, and the food reserves are moved into the two cotyledons. As the embryo and cotyledons enlarge, they run out of room inside the developing seed, and are forced to bend. Ultimately, the embryo and cotyledons fill the seed , and the seed is ready for dispersal. Embryonic development is suspended after some time, and growth is resumed only when the seed germinates. The developing seedling will rely on the food reserves stored in the cotyledons until the first set of leaves begin photosynthesis.

the part of a seed which acts as a food store for the developing plant embryo, usually containing starch with protein and other nutrients.

The correct answer is b) stock

The endosperm is the tissue produced inside the seeds of most of the flowering plants following fertilization. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein.

Endosperm is a nutritive tissue found in the seeds of nearly all the flowering plants after fertilization. The endosperm is normally formed in the process of double fertilization.

Although an endosperm can contain oil and protein, it mainly contains starch. The starch surrounds the embryo and provides it with nutrients. Due to the abundance of starch in the endosperm, it is a food source for humans and other animals.

Red rust of tea is caused by Green algae(Cephaleuros parasiticus)

Red rust of tea is caused by (D) Brown Algae.

Red algaeare widely known toproduce floridean starch.

answer likha hua hai

far point of an eye is infinite and near point of normal eye is 25cm.please like

The female gametophyte of angiosperms is Embryosac

option (c) is correct

teritary structure of protein

Spindle Formation during cell division

Excessive thinning ofozone layerwhen more than half of the ozone gas in a particular area is depleted, and harmful ultraviolet rays can pass through to reach the earth's surface.Theozone holewas of particular concern to the environmental scientist in our research and development lab so it was focused on.

We studied theozone holeand my friend informed me that the world would end because the ozone layer would be destroyed.

Temperatures frequently drop below -112ºF. Antarctica is also one of the windiest places on Earth. In May and June, strong winds in the stratosphere begin to blow clockwise around the continent. These howling stratospheric winds gradually form an enormous ring of moving air, called the Antarctic polar vortex, that swirls around and around, far above the frozen land….

During the winter, temperatures inside the Antarctic polar vortex fall so low that water vapor and several other types of molecules in the stratosphere condense into extremely small icy particles. These icy particles, in turn, make up polar stratospheric clouds (PSCs). When the sun sets in the Antarctic around the end of March each year, its disappearance marks the beginning of a long, dark winter. Once the last rays of sunlight have faded away, temperatures on land and in the air fall very quickly.

In the stratosphere, high-altitude winds that create the polar vortex begin to blow around the continent. Isolated from warmer air outside the vortex, the air inside gets colder and colder. Eventually, it is cold enough for PSCs to form. And that is when the trouble really begins.Drifting around inside the polar vortex are reservoir molecules that have bonded with chlorine atoms and in so doing prevented them—so far—from attacking ozone. When PSCs form above Antarctica, chlorine reservoir molecules bind to the icy particles that make up the clouds. Once this happens, complex chemical reactions begin to take place that result in molecules of chlorine gas (Cl2) being released from the reservoirs. In this form, however, chlorine doesn't attack ozone. It just collects inside the vortex. All through the long, dark winter, especially during July and August, the chemical reactions taking place on the surfaces of the PSC particles continue, and more and more Cl2 builds up inside the vortex. At this point, the stage is set for ozone destruction. All that is needed is a trigger to get the process going.

That trigger comes in late August, when the sun begins to rise. As the first rays of spring sunlight strike the stratosphere high over the frozen continent, conditions change very rapidly. The UV rays coming from the sun strike the Cl2 molecules inside the vortex. The molecules break apart, releasing billions of chlorine atoms that begin an attack on ozone molecules. The result is massive ozone destruction. Before long, so much ozone is destroyed inside the vortex that an ozone hole is formed.

Respire means breathing, which is an exchange of gases. Body cells get everything they need by osmosis, using hemoglobin to carry oxygen.

Skin layers are divided into 3 compartments, from the outermost to innermost layer namely epidermis, dermis and hypodermis.

Deep layer of epidermis, dermis and hypodermis are deep beneath the skin so they respire. Whereas superficial layer of epidermis are dead keratinized cells, they are dead so they don't respire anymore.

Human skin cell has 46 chromosomes.Human ovum has 23 chromosome

Eddy current of the transformer minimize use the core of the transformer is laminated

Kidneys are the important excretory organs of human body and it has lungs, skin , intestine , small amount of nitrogenous waste and liver also.

If you have excess of salt of calcium , magnesium and iron are the most excreted by the huge number of intestine for elimination along with the face of it.

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Vestigial structures are oftenhomologousto structures that are functioning normally in other species.

Therefore, vestigial structures can be considered evidence forevolution, the process by which beneficial heritable traits arise in populations over an extended period of time.

The existence of vestigial traits can be attributed to changes in the environment and behavior patterns of the organism in question.

Ans :- As their is no definateexcretory organ in unicellular organism;excretory product are stored in the vacuole of cell and from their it throw out of the body.

ask each question one by one...

which material is used to make the human body

who stored the mineral

In human beings different sense organs contains receptors for detecting differentstimuli. Ourskin, eyes, ears, nose and tongue contain different receptors. OLFACTORY RECEPTORS are present in nose they detect thesmell.They are sensitive to chemicalstimuli. GUSTATORY RECEPTORS are present in tongue they detecttaste.

Acquired traits as the name says are acquired by the individual during its life time. Acquired traits are due to changes in the life style, injury, loss of body parts, disuse of some body parts. These are the traits which occur in the somatic cells. Changes in the somatic cells are not passed on to the offspring belonging to next generation.Hence acquired traits cannot be passed on to next generation.

Inherited traitsare the characters which areinheritedby the offspring from the parents. ... Suchtraitswhich are carried from one generation to another generation are called as inherited traits.Acquired traitsas the name says areacquiredby the individual during its life time.

Acquired Traits :

1. These are somatic variations.

2. Acquired traits developed due to the effects of environmental factors, use and disguise of organs and special (conscious) efforts.

3. These traits develop throughout the lifetime of an individual, and the with death of that individual.

4. Example : Learning of dance, music, etc. and muscular body of a wrestler.

Inherited Traits :

1. These are genetic variations.

2. Inherited traits develop due to reshuffling of genetic material and mutation.

3. These traits are transferred (inherited) by the parents to their offspring. These don't die but are passed on to the next generation.

4. Example : Attached or free earlobe and curly hair

Read more on Brainly.in - https://brainly.in/question/291403#readmore

Anacquired traitis defined as a characteristicortraitthat produces a phenotype that is a result of an environmental influence.Acquired traits arenot coded in the DNA of an individual and therefore most scientists believe they cannot be passed down to offspring during reproduction.

Lamarck was the scientist who put forth the theory of acquired traits in 1801

Inherited traitsare things that are passed down from parents or ancestors. They are in the genetic make up of the organism. For example, hair color, eye color, bone structure.

Acquired traitsare things that are not passed genetically from one organism to another. They are skills, memories or knowledge

There are two main causes of erythroblastosis fetalis:Rh incompatibilityandABO incompatibility.

Both causes are associated withblood type. There are four blood types:

A

B

AB

O

In addition, blood can be either Rh positive or Rh negative.

For example, if you’re type A and Rh positive, you have A antigens and Rh factor antigens on the surface of your RBCs. Antigens are substances that trigger an immune response in your body.

If you have AB negative blood, then you have both A and B antigens without the Rh factor antigen.

Rh incompatibility

Rh incompatibility occurs when a Rh-negative mother is impregnated by a Rh-positive father. The result can be a Rh-positive baby.

In such a case, your baby’s Rh antigens will be perceived as foreign invaders, the way viruses or bacteria are perceived. Your blood cells attack the baby’s as a protective mechanism that can end up harming the child.

If you’re pregnant with your first baby, Rh incompatibility isn’t as much of a concern.

However, when the Rh-positive child is born, your body will create antibodies against the Rh factor. These antibodies will attack the blood cells if you ever become pregnant with another Rh-positive baby.

ABO incompatibility

Another type of blood type mismatch that can cause maternal antibodies against her baby’s blood cells is ABO incompatibility. This occurs when the mother’s blood type of A, B, or O isn’t compatible with the baby’s.

This condition is almost always less harmful or threatening to the baby than Rh incompatibility. However, babies can carry rare antigens that can put them at risk for erythroblastosis fetalis.

These antigens include:

Kell

Duffy

Kidd

Lutheran

Diego

Xg

P

Ee

Cc

MNSs

e. is correct because in all the above options given they are promoting nation's goods and traits..

E is the right answer because aal are the national movement

E is the right answer

E is correct answer of your questions

Eye color, hair color, height, nose, weight, etc.

All the variations in the species do not have equal chances of survival in the environment. The survival of the variations depends upon the nature of variation. Different individuals have different chances. Selection of variants by environmental factors forms the basis for evolutionary processes.These variations may lead to increased survival advantages of the individuals due to positive adoption of traits or may merely contribute to the genetic drift.

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1. Whenever two traits of a character were crossed, the F1plants showed only one of the traits; the other trait never appeared. It did not matter whether the trait came from the pollen or the egg.

2. The trait that did not appear in F1reappeared in F2, but in ¼ of the total number of plants.

Acquired and Inherited traits

Acquired traits. Traits acquired by organisms during their lifetime. Not passed from one generation to another.

Inherited traits. Traits controlled bygenes. Passed on from one generation to the next

During summer we should wear white coloured clothes as they are poor absorbers of heat and keep us cool. During winter black clothes are preferable because they are good absorbers of heat and keep us warm.

400 kj

plz like my answers I like yours answer

It depict Phytoplankton 400kj

400 kj phytoplankton

phytoplankton 400 kj

Phytoplankton ans hai

400 kj

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400 kj right answer.....

phytoplankton 400kj is the right answer

phytoplankton 400kj is the correct answer

400 kj phytoplankton

400 kg is the correct answer me to

phytoplankton 400 kg weight is always but some time lose and encrease weight

(b) endemic diseases

Explanation:A disease that is endemic is found in a certain geographic region or in a specific race of people.

water at room temperature is liquid because at this temperature (i)it has fixed volume and (ii)it can flow.

Bryophytesalsoneeda moist environment to reproduce. Their flagellated sperm must swim throughwaterto reach the egg. Somossesand liverworts are restricted to moist habitats. ... They grow directly out of thefertilizedegg in the archegonia, and remain dependent on the parent gametophyte for their nutrition.

1)It's composition is about 75% of earth's surface.2) It is available in glaciers, stored underground as groundwater.

The mouth is the beginning of thedigestivetract. In fact,digestionstarts here as soon as you take the first bite of a meal. Chewing breaks thefoodinto pieces that are more easilydigested, while saliva mixes withfoodto begin the process of breaking it down into a form your body can absorb and use.

In chemicaldigestion, enzymes break downfoodinto the small molecules the body can use. In the humandigestive system,foodenters the mouth and mechanicaldigestionof thefoodstarts by the action of mastication (chewing), a form of mechanicaldigestion, and the wetting contact of saliva.

Digestionis the breakdown of large insolublefoodmolecules into small water-soluble food molecules so that they can be absorbed into the wateryblood plasma. In certain organisms, these smaller substances are absorbed through thesmall intestineinto theblood stream. Digestion is a form ofcatabolismthat is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The termmechanical digestionrefers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed bydigestive enzymes. Inchemical digestion,enzymesbreak down food into the small molecules the body can use.

In chemicaldigestion, enzymes break downfoodinto the small molecules the body can use. In the humandigestive system,foodenters the mouth and mechanicaldigestionof thefoodstarts by the action of mastication (chewing), a form of mechanicaldigestion, and the wetting contact of saliva.

In chemicaldigestion, enzymes break downfoodinto the small molecules the body can use. In the humandigestive system,foodenters the mouth and mechanicaldigestionof thefoodstarts by the action of mastication (chewing), a form of mechanicaldigestion, and the wetting contact of saliva.

The term mechanicaldigestionrefers to the physical breakdown of large pieces offoodinto smaller pieces which can subsequently be accessed bydigestiveenzymes. In chemicaldigestion, enzymes break downfoodinto the small molecules the body can use. ... Gastric juice in the stomach starts proteindigestion.

The term mechanicaldigestionrefers to the physical breakdown of large pieces offoodinto smaller pieces which can subsequently be accessed bydigestiveenzymes. In chemicaldigestion, enzymes break downfoodinto the small molecules the body can use. ... Gastric juice in the stomach starts proteindigestion.

Digestionis the breakdown of large insolublefoodmolecules into small water-soluble food molecules so that they can be absorbed into the wateryblood plasma. In certain organisms, these smaller substances are absorbed through thesmall intestineinto theblood stream. Digestion is a form ofcatabolismthat is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The termmechanical digestionrefers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed bydigestive enzymes. Inchemical digestion,enzymesbreak down food into the small molecules the body can use.

Digestionis the breakdown of large insolublefoodmolecules into small water-solublefoodmolecules so that they can be absorbed into the watery blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream.

Digestionis the breakdown of large insolublefoodmolecules into small water-soluble food molecules so that they can be absorbed into the wateryblood plasma. In certain organisms, these smaller substances are absorbed through thesmall intestineinto theblood stream. Digestion is a form ofcatabolismthat is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The termmechanical digestionrefers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed bydigestive enzymes. Inchemical digestion,enzymesbreak down food into the small molecules the body can use.

The humandigestivesystem consists of thegastrointestinal tractplus the accessory organs ofdigestion(the tongue, salivary glands, pancreas, liver, and gallbladder).Digestioninvolves the breakdown offoodinto smaller and smaller components, until they can be absorbed and assimilated into the body.



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Class-XI

Biology

Asked by Sanalkumar S

Feb 5, 2015

What is digestion? Briefly explain the process of digestion.

Define digestion. Explain the process of digestion in human beings.

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Aruna kavitha Singupilla

Member since Jun 30, 2014

Sol:Digestion: Digestion is the process by which food is broken down into simple absorbable substances. Digestion of food takes place in the digestive system. Digestive system is made up of alimentary canal and associated glands.Parts of alimentary canal:The mouth, oesophagus, stomach, small intestine and large intestine form the alimentary canal. It is also known as the digestive tract.Mouth is guarded by upper lip and lower lip. The process of taking in food through mouth is called as ingestion.Buccal cavity is the inner region of the mouth. It encloses teeth and tongue.Teeth are of different types namely, incisors, canines, premolars and molars.Incisors are used for biting food.Canines are sharp and pointed and are used to pierce or tear food.Premolars and molars are the principal grinders helping to chew and grind the food.Tongue is a muscular organ attached to the floor of the buccal cavity at the back. It helps in mixing of food with saliva and swallowing it. It also helps in tasting different types of food with the help of taste buds present on it. The buccal cavity leads into pharynx.Pharynx is at the back of buccal cavity. The pharynx is the common channel for food and air. When you swallow food, a flap-like valve called the epiglottis closes the windpipe. It prevents the entry of food particles into respiratory tract.Oesophagus also called as food pipe helps in conveying the food from buccal cavity to stomach. The oesophagus is also known as the gullet. It is about 25 centimetres long. Food inside the oesophagus reaches the stomach by peristalsis movements.Stomach is the widest part of the alimentary canal. It is a J-shaped muscular organ with stomach occurs with the help of digestive juice. Digestive juice comprises of hydrochloric acid, mucous and some enzymes.Small intestine is made up of three regions namely duodenum, jejunum and ileum. Partially digested food called the chyme from the stomach is received by the duodenum. Duodenum also receives bile form the liver, enzymes from pancreas and secretes some enzymes on its own. All these substances bring about digestion of food in the intestine. The inner walls of the small intestine have millions of small finger like projections called the villi. Villi increase the surface area for digestion as well as absorption of digested food by eight times.Large intestine comprises of colon and rectum. Undigested food is sent into large intestine. Water from the food is reabsorbed to a great extent in the large intestine. Undigested waste is stored in the rectum for defecation.Anus is the opening of the alimentary canal to the exterior. This helps in the elimination of faeces by the process of egestion.Associated glands: These glands include salivary glands, gastric glands, intestinal glands, liver and pancreas.Salivary glands are present inside the buccal cavity. They secrete saliva. This saliva plays an important role in breaking down complex components like starch into simple sugars.Gastric glands present inside the stomach secrete gastric juice which helps in the digestion of food.Intestinal glands secrete various enzymes which aid in the process of digestion of food.Liver is the largest gland in our body. The liver secretes a yellowish green watery fluid called bile. It is temporarily stored in a sac called the gall bladder. Bile plays an important role in the digestion of fats. Bile is sent into duodenum through a narrow tube-like structure called the bile duct. Bile breaks the larger fat molecules into tiny droplets, thereby increasing their surface area, which helps in the digestion of fats easily.Pancreas is the mixed gland. It acts as a both endocrine and exocrine gland. The pancreas secretes the pancreatic juice that helps to digest carbohydrates, proteins and fats. The pancreatic juice converts carbohydrates into simple sugars and glucose, proteins into amino acids, and the lipids into fatty acids and glycerol.

the digestion is a process of food digested in our body to get energy then the process is firstly with using of food particle through mouth and it is breakdown very small particles and mixed with saliva to digest the starch and it enter through a pipe in in stomach and secret HCL to kill the all type of pathagenic bacteria and liver secret bile juice and then food are ends in small intestine to digest food particle and also absorb essential material and which are not essential then remove by anus

-basically the digestion of food will be start with our buccal cavity when we take bolas the break down of starch will be start.-the there is no digestion in esophagus according to class 10 NCERT science. page 100- then food went into the stomach and in stomach there were many enzymes present like HCl,pepsenogene,renine in children etc they act- digestion also held in intestine ref class 10 science NCERT. page 100.

there mout is the beginning part of human body.first the teeth crused or chewd the food after that tounge mix saliva which is secreted by salivary gland after that food passes through food pipe after that it will pass into stomach and it will be pass through the small intestine and after that lon intestine

the food goes firstly in mouth that is vocal cord and then saliva digest 30% starch in mouth and kill the bacteria present in food then it goes to oesophagus and then in stomach .In stomach there is HCl present which is created by stomach and digest it and break into small pieces and there is mucus also present in stomach which protect stomach from HCl.then it goes to pancreas which create pancreatic juice for digestion then in liver create bile juice and then in small intestine then large intestine then rectum

digestion involves The mixing of food. it's movemant through digestive tract, and the chemical breakdown of the large molecules of food into smaller molecules.

The major components of our food are carbohydrates,proteins and fats . Vitamins , and minerals are also required in small quantities. Food provides energy and organic material for growth and repair tissues. "The Biomacromolecule in food cannot be utilised by our body in their original form , since they have to be broken down and converted in to simple substance". This process of conversion of Complex food substantces to simple absorable form is called Digestion .

d part is the correct answer

option B is correct answer

Digestion is a form of catabolism that is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed by digestive enzymes.

Protein digestion.Protein digestionoccursin thestomach and duodenum in which 3 main enzymes, pepsin secreted by the stomach and trypsin and chymotrypsin secreted by the pancreas, break down foodproteinsinto polypeptides that are then broken down by various exopeptidases and dipeptidases into amino acids.

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