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The inner lining of stomach is protectedby mucus. Mucus produced in thestomachforms a layer on the cells of thestomachpreventing them directly coming in contact with acid in thestomach.

A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension.

Keeping food in air tight containershelp inpreventing rancidity. It does not allowair(oxygen) to come in contact with thefoodand this preventsoxidation offood. Thus thefoodnever becomerancidand its smell and taste remains the same.

A tendon (or sinew) is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments and fasciae; all three are made of collagen. Ligaments join one bone to another bone; fasciae connect muscles to other muscles. Tendons and muscles work together to move bones.

tendon connects muscles and bones

Ligaments connects muscle with bones

tendon connects muscles with bones

There are two types of muscle: striated and smooth. The formerhave regular stripes, or striations, when observed under a microscope. These striations are due to the arrangement of muscle fibers, which form parallel lines.

The muscles that move our body parts are called skeletal muscles, and they area type of striated muscle. We can actively control these with our brain. Another type of striated muscle are those that keep our hearts pumping, which we are unable toactively control.

Specific molecules within the muscle fibers allow striated muscles to contract rapidly, allowing us to move. The main players in this intricate process are molecules called actin and myosin.

Ans:-Red musclesare themusclesin which dark bands or fibers are dominant, and they contain a large amount of myoglobin and mitochondria in it, whereaswhite musclesare the musclesin whichwhitefibers are dominant, and they have a small amount of myoglobin and mitochondria in them.

1)In striated tissue ,striations are present whereas in unstriated ,striations are absent.

2)Striated are Voluntary in Action whereas Unstriated are involuntary in actions .

3)Striated are long and cylindrical while unstriated are long with pointed ends.

4)Striated are multinucleated whereas unstriated are uninucleated.

5)Sarcomeres are Absent in striated whereas in Unstriated Sarcomeres reticulum is poorly developed.

6)In striated Numerous mitochondria and glycogen granules are present whereas in unstriated they are present in less number.

7)Striated can be seen attached to the skeleton whereas unstriated are seen in internal organs .

Example : Biceps muscle is the example of striated and intestinal muscle is the example of unstriated.

When growing plants detect light a hormone calledauxin, synthesized at the shoot tip helps the cells to grow longer. When light is coming from one side of the plant,auxindiffuses towards the shady side of the shoot.

Under normallightconditions auxins are spread out in theplant. But when sunlight varies, auxin is broken down on the sunnier side of the stem. The higher concentration of auxin on the shady side causes theplantcells on that side to grow more so itbendstoward thelight.

The property by which Chlamydomonas leans towards light is called phototropism.

In this phenomenon, plants tend to bend towards incoming light, that is, they bend in the direction of the light.

This is to boost growth and to photosynthesize with ease due to sufficient light available.

This is one important property found for plant growth.

THREE parts include nitrogen-containing base, sugar backbone and phosphate group.

Nitrogenous Base: Purines and pyrimidines are the two categories of nitrogenous bases. Adenine and guanine are purines. Cytosine, thymine, and uracil are pyrimidines. In DNA, the bases are adenine (A), thymine (T), guanine (G), and cytosine (C). In RNA, the bases are adenine, thymine, uracil, and cytosine.

Pentose Sugar: In DNA, the sugar is 2'-deoxyribose. In RNA, the sugar is ribose. Both ribose and deoxyribose are 5-carbon sugars. The carbons are numbered sequentially, to help keep track of where groups are attached. The only difference between them is that 2'-deoxyribose has one less oxygen atom attached to the second carbon.

Phosphate Group:A single phosphate group is PO43-. The phosphorus atom is the central atom. One atom of oxygen is connected to the 5-carbon in the sugar and to the phosphorus atom. When phosphate groups link together to form chains, as in ATP (adenosine triphosphate), the link looks like O-P-O-P-O-P-O, with two additional oxygen atom attached to each phosphorus, one on either side of the atom.

(d)Kingfisher is the correct option.

Thedigestive tractprovides the nutrient molecules, through the process ofdigestion, while therespiratory tractprovides oxygen. As such, the twosystems worktogethertogive your cells the ingredients they needtoproduce energy, which they usetocommunicate, build cellular products and grow.

Thedigestive tractprovides the nutrient molecules, through the process ofdigestion, while therespiratory tractprovides oxygen. As such, the twosystems work togetherto give your cells the ingredients they need to produce energy, which they use to communicate, build cellular products and grow.

Theunit of momentumis the product of theunitsof mass and velocity. InSI units, if the mass is in kilograms and the velocity is in meters per second then themomentumis in kilogram meters per second (kg⋅m/s).

the unit of momentum is the product of the unit of mass and velocity

(kg.m/s) is the right answer

InSI units, it is measured inkilogram meters per second(kg⋅m/s).Newton's second lawof motion states that a body's rate of change in momentum is equal to the net force acting on it.

kilogram metre per second

InSI units, momentum is measured inkilogram meters per second(kg⋅m/s).

kilogram meters per second.

The functional group is defined as an atom or group of atoms joined in a specific manner, which gives the chemical properties of the organic compound and are the centers for chemical reactivity.

Compounds having a similar functional group have undergone similar reactions.

The functional group presence in the alkane is -C-C-. The IUPAC group suffix of an alkane is –ane.

Example: Methane CH4

ADVANTAGES Of Wind Energy1) Wind Energy is an inexhaustible source of energy and is virtually a limitless resource.2) Energy is generated without polluting environment.3) This source of energy has tremendous potential to generate energy on large scale.4) Like solar energy and hydropower, wind power taps a natural physical resource.5) Windmill generatorsdon’temit any emissions that can lead to acid rain or greenhouse effect.6) Wind Energy can be used directly as mechanical energy.7) In remote areas, wind turbines can be used as great resource to generate energy.8) In combination with Solar Energy they can be used to provide reliable as well as steady supply of electricity.9) Land around wind turbines can be used for other uses, e.g. Farming.

LIMITATION of harnessing wind energy-

1.Minimum speed of wind must be 15KM/H

2.It can be extracted only at limited sites where the wind blows most of the time.

3.Large area is required to build the wind mulls which is expensive affair.

4.Efficiency is low and maintainence is high.

1)Geographical barrier: Extrinsic geographical barriers such as rivers, mountains, etc between two populations which allows no gene flow and leave them to become new two species.

2) Genetic drift: Accidental change in allele frequencies that may result in extinction of poulation or formation of new species from them

3) Natural selection: Selection performed by nature, of the best suited varieties ( having favourable variations)to survive and destruction of the less suited varieties through exposure to environmental stresses.

The formation of a new species by evolution or by any genetic modification of the previously existing species in a population is called speciation. Following are the factors that could lead to speciation: 1. Geographic isolation 2. Reproductive isolation 3. Genetic drift 4. Natural selection

Geographical isolation cannot be a major factor in the speciation of a self-pollinating plant species. Since, the plants are self-pollinating, which means that the pollens are transferred from the anther of one flower to the stigma of the same flower or to the stigma of another flower of the same plant, geographical isolation cannot prevent speciation in this case.

Mahatma Gandhi is known as the Father of the Nation.

Mathma Gandhi is our father of nation

the correct answer is C

The three important 'R's in solidwaste managementare reduce, reuse and recycle. Reduce: Generation ofwasteshould be reduced at the source. Reuse: Industrialwastescan be reused by propertechniquesand processing. Recycle:Recyclingis using the same materials for making new products.

Enzymes extracted from microbes are used in industrial sector because of environmental friendly nature. Microbial enzymes replace the use of chemicals in both technical and industrial process which lowers the pollution rate.Therefore microbial enzymes are said to be eco friendly.

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The give information is not enough to tell us which of the traits – blood group A or O – is dominant. In blood heredity, blood Type A is always dominant and blood Type O is always recessive.Here, father’s Blood group can be AA (homozygous) or AO (heterozygous) genotypically, where as that of mother can be OA or OO. For daughter to be born with blood group O, she must receive O type gene one each from father and mother. For this father must have heterozygous AO blood group and mother must have homozygous blood group OO.

The baby will be either type A or type O. The father’s blood will be OO since O is a recessive trait. The Mother can be either AA or AO. If she is AA there is a 50% chance the child will be A and 50% O. If the mother is AO then there is a 25% chance the baby will be A and 75% cance the baby will be O.

this is possible if blood groups of parents are A and AB

yes it is possible because of her responsible genotype

when the parents have blood group i°A and i°B .

it is decided by the male blood group.

the correct answer is second one

second one is correct answer that question

A person with the blood group O positive is considered to be a universal donor.

O positive is the right answer.

A person with the blood group 'o' is considered to be a universal donor

The person who has O +ve blood group is considered as universal donor

This lack of antigens means that type O negative blood can be transfused in people of any blood type; hence, the term universal blood donor. Individuals with the blood group O Rh negative are called “universal donors” because their red blood cells can be transfused to people of all blood groups.

and O+ is wrong answer

Parameters which should be checked are: Blood pressureBlood groupSugarif a person is suffering from any other disease

Thechemical formulais 6CO2 + 6H2O + light energy = C6H12O6 + 6O2.

6CO2+6H2O +C6H12O6 +6O2 +6H2O

A balanced chemical equation for the process can be written as 6CO2 + 6H2O —> C6H12O6 + 6O2.

d. both upright and inverted depending upon ecosystem

Different organisms with common ancestry in the past, are more likely to have similar characteristics due to inheritance. These similar characteristics are used to determine evolutionary relationships. Basic structure of Forelimbs in human and birds is one such example of a characteristic which shows closeness of two species in evolutionary terms. The forelimbs in both the species, have similar bones structure and similar origin, but, over period of time, spanning generations, they have been developed to perform different suitable functions as per the need. Such organs that have similar basic structure but perform different functions are called homologous organs. These are used to find out evolutionary relationships.

Get to know the rules of recycling.

Ditch the plastic bags.

Make a meal plan.

Start relying on reusable containers.

Start composting.

Learn to repair rather than discard.

Cancel unnecessary mail.

Stop using disposable plates.

Urineis formed in the kidneys through a filtration of blood. Theurineis then passed through the ureters to the bladder, where it is stored. Duringurination, theurineis passed from the bladder through the urethra to the outside of the body.

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Urineis formed in the kidneys through a filtration of blood. Theurineis then passed through the ureters to the bladder, where it is stored. Duringurination, theurineis passed from the bladder through the urethra to the outside of the body.

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answer of question number 20.is mid brain

Answer of question number 21.is vasoprwssin

answer for 21 is vasoprison

answer of ques 20 is midbrain

answer of ques 21 is vasoprwssin

Pituitary gland: The main endocrine gland.

It isasmall structure in the head.

It iscalledthemaster glandbecause it produces hormones that control otherglandsand many body functions including growth.

The pituitaryconsists of the anterior and posteriorpituitary.

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