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Before EYE surgery--
1) Wash your eye THRICE with splitting cold water
2)Don't rub your eye

After eye surgery--
1)Don't keep your eye in contact with dirt and dust
2)Avoid going out during a sunny day (if it is urgent then WEAR the GLASS provided by the doctor after the surgery)

Cellulose because HUMAN BEINGS lack cellulose DIGESTIVE enzymes

Cutin and waxes are fatty substances deposited in THEWALLS of epidermal cells, forming a WATERPROOF outer LAYER CALLED the CUTICLE. ... …secrete a waxy substance (cutin) that forms acuticle impermeable to water.
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The three TYPES are the arteries, veins, and capillaries. Arteries are the vessels that carry BLOOD AWAY from your HEART to the different parts of your body. The pulmonary arteries take blood to the lungs to pick up oxygen. thnx

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Plant Kingdom – Plantae

Plantae is the plant kingdom which includes all plants on the earth. They are multi-cellular eukaryotes. They consist of cell walls and chlorophyll. Plants are photosynthetic. Hence, they have an autotrophic mode of nutrition. The plant kingdom is a vast GROUP; therefore, the kingdom is further classified into subgroups. Level of classification is based on the following three criteria:

1.Plant body– whether the body has well-differentiated structures or not.

2 Vascular SYSTEM-whether the plant has vascular system for transportation of SUBSTANCES or not.

3.Seed formation– whether the plant bears flowers and seeds or not; if it does, then whether it is enclosed within fruits or not.

Considering all these factors, the plant kingdom has been divided into two groups and five subgroups.

The two subgroups are:-

Cryptogams- reproduction through spores and no seed formation. They include subgroups Thallophyta, Bryophyta and Pteridophyta

Phanerogams-they have specialised reproductive organs and they produce seeds. GYMNOSPERMS and Angiosperms belong to this group.

The 5 subgroups are as FOLLOWS:

A)Thallophyta- body not differentiated into roots and stem,no vascular system,no seed formation

B)Bryophyta-body differentiated but lack vascular system,no seed formation

C)Pteridophyta- well- differentiated body, vascular system present, no seeds formation

D)Gymnosperms- well-differentiated body with vascular system, seeds are naked(not enclosed in a fruit)

E)Angiosperms- well-differentiated body with vascular system, seeds are covered(enclosed in a fruit)

Those ORGANISM which are ADAPT to live both in WATER and in land is known as amphibian.

Frog is an example of ambhibian .Frog when lives in water respire through his moist skin and when it lives in land it respires through lungs.

By the way ur spelling is WRONG....don't MIND...!!

Hey mate....
Hcl present inside in our body is not HARMFUL for us if it is used.Means that Hcl present in the stomach helps in the digestion of FOOD.But we don't take food at regular INTERVALS it can harm us.

But the Hcl present in labs(the acids) can CAUSE harm to us.

If I am RIGHT it's TESTOSTERONE in BOYS and Oestrogen and Progesterone in girls

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Muscle TISSUE is a SOFT tissue that composes MUSCLES in animal bodies, and gives RISE to muscles' ability to contract. This is opposed to other components or tissues in muscle such as tendons or perimysium. ... Smooth and CARDIAC muscle contracts involuntarily, without conscious intervention.

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Pollen TUBE EMERGES out from GERM pores present in exine layer of pollen GRAINS.

The metabolites which are REQUIRED for the growth and maintenance of cellular function are called primary metabolites. While such metabolites which are not required for the growth and maintenance of the cellular function and are the end product of the primary metabolites are called as secondary metabolites.

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There are TWO components of ECOSYSTEM
1. Biotic ( PRODUCER, consumers, DECOMPOSER)
2. Abiotic ( inorganic, organic, PHYSICAL)

Apical Meristem Tissue:
They are present at the tips of root and shoot and THUS help in increasing the length of the stem and the roots.

Lateral Meristem Tissue:
They occur on the sides both in stem and root. They help in increasing the girth or diameter of the plant.

Intercalary Meristem Tissue:
They occur in intermediate position at the BASE of leaves, base of internodes or below the NODES. They help in CAUSING stem elongation in the plants.

-earthworms

- snails

- Millipedes

-fungi (mushroom)

-algae

-BACTERIA

-mites

-nematodes

-ants

-roots

-Earwigs

These LIVING THINGS affect the soil during decomposition. Decomposers are ORGANISMS that break the remains of dead organisms into smaller pieces and then digest them with chemicals. This decomposed material then mixes with soil to MAKE humus. Decomposers include fungi, bacteria, worms, and more.

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stratified Cuboidial epithelium TISSUE FOUND in salavary glands.

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Central CHEMORECEPTORS:-
thease are located within the medulla, they are sensitive to the ph of their environment.....

peripheral chemoreceptors:-
the aortic and CAROTID BODIESWHICH act principally to detect variation of the OXYGEN concentration in the artrial blood , it also monitor CO2 and ph of artrial blood...


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XYLEM and phloem are the tissues which are present in the VEINS of leaves.

VASCULAR TISSUE is a complex conducting tissue, formed of more than one cell TYPE, found in vascular plants.

The primary components of vascular tissue are the xylem and phloem.

These two tissues transport fluid and nutrients internally.

The functions 0f three specific proteins in plasma are

1.Albumin:It acts as a transport carrier for various biomolecules such s fatty acids, TRACE ELEMENTS and drugs.
2. FIBRINOGEN: It PLAYS an important role in clothing of blood where it is CONVERTED to fibrin by thrombin
3.Globulin: It helps in maintaining osmotic pressure.

Sports and It's importance

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           Today, In 2019 EVERY one is having it's book, mobile, laptop and computer. And today is a day on which every one is studying. Only study! Nothing diffrent thing. And because of more studies students are getting improper and unhealthy.

      Before 20 to 30 YEARS, Every one was interested in Sports and Games and that time every person, student, childrens plays sports and diffrent types of outdoor games. And In today's life students have started to play ONLINE games. But what about outdoor sports?

             Outdoor sports are very important in student or person life. Because when we play outdoor games then our health became good as well as we don't have problem of any kind of disease. And by playing the sports and games our brain improves. And our concentreation power is increased. Not only concentreation power, but also our body parts feel safety as well as we get proper health.

       There are so many advantages of sports and games. But there are disadvantages too. And one most important disadvantage is the Injury. When we don't have practice with our specific game, then our body can be having injury! Also one big disadvantage is team quarrel when we play games by teams then there is a chance to be FIGHT with other teams after losing the match, Most of the people are not like this but some people are not honest and they just quarrel.

            Sports make person active, honest, disiplined as well as good listener and speaker. We should give our 1 hour daily for sports. Many schools don't have there sports period because of which students get inactive. Every school should be having the Sports period of approximately 1 Hour.

            Many math experts and many people who are expert in studies in there subject and people who have knowledge about sports, they give there daily 1 Hour in playing sports.

         There are so many sports in this world. like-cricket, football, hockey, volleyball. But we should try to play games in which there is our more running as well as more work of brain. One example of this is football. Because of playing football our running skills are DEVELOPED as well as brain sharps.

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Mendel's Law of DOMINANCE states that RECESSIVE alleles will always be masked by dominant alleles. Therefore, a cross between a HOMOZYGOUS dominantand a homozygous recessive will always express the dominant phenotype, while still having a heterozygous genotype.

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To PREVENT the PARTICLES PRESENT in air in ENTERING the BODY

The female part of FLOWER is CALLED gynoecium
and MALE part is called ANDROECIUM

The answer is (B)
EUKARYOTIC cells are the advanced(RECENT)cells hence they will have a WELL defined CYTOPLASM and organalles

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AEROBIC takes place in presence of oxygen and happens in animals whereas anaerobic respiration takes place in absence of oxygen and happens in MICROBES

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One PLANT disease can wipe out an entire POPULATION of cloned plants. A second disadvantage is increased competition. Asexual REPRODUCTION allows the plants to reproduce very quickly. This means the parent plant will be competing with a GREAT number of OFFSPRING for the same nutrients, sunlight, and space.

Arms are made up of ball and socket type joint but elbow is made up of hing joint which is only MOVE in one direction

other EXAMPLE of hing joint:- phalanges, KNEE and elbow

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➡️➡️➡️➡️➡️➡️➡️Animal tissues are grouped into four basic types: connective, muscle, nervous, and epithelial. Collections of tissues joined in structural units to SERVE a common FUNCTION compose organs.

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Spore mother cell(2N) is the last diploid STAGE because after that meosis takes place and spores(n) are formed which are HAPLOID..

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IRIS controls the amount of LIGHT entering into the EYE by dilating or contracting the PUPIL.

Intake of FOOD is CALLED NUTRITION
in nutrition where are DIGESTION

The TYPES of MUSCLES..DIAGRAM ATTACHED below.

The THREE main types of flatworms are free-living, flukes and tapeworms. Both flukes and tapeworms are PARASITIC, RELYING on other host animals for survival. ALTHOUGH flatworms do not have HIGHLY evolved biologicalsystems, they have several adaptations that optimize their survival.

"Option (a) is the correct answer.

The excretory organ of cockroach is the malphigian TUBULES. There are 150 malphigian tubules in a cockroach, found in the haemolymph.

They are yellow COLOURED, thin, thread like structures found in bundles.

URIC acid, amino acid, water and inorganic materials are absorbed by the tubule from the haemolymph. Water and useful material is absorbed but the faeces and uric acid in solid FORM is finally EXCRETED out of the cockroach.

"

Because they REPRODUCE by multiple binary FISSION and PRODUCTION of SPORES ovcur

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Protein DIGESTION. Protein digestion OCCURS in the stomach and duodenum in which 3 main enzymes, pepsin secreted by the stomach and TRYPSIN and chymotrypsin secreted by the pancreas, break down food proteinsinto polypeptides that are then broken down by various exopeptidases and dipeptidases into amino ACIDS.

"The method adopted COULD be grafting method. It helps to GIVE flowers and fruits with desired characteristics.

In this method two plants could be JOINED with desired characteristics such that there stems are joined together.

Join the plants both at the soil and at the stem by TWINE thread. You will get an improved variety of flower and FRUIT.

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Xylem is also called conducting tissues because they are involved in the transportation of food and water THROUGHOUT the plant.

The cells of the epidermis are TIGHTLY packed together forming a mechanical barrier. This mechanical barrier is important to PROTECT against bacterial infection and other harsh environmental conditions. Theepidermis is covered by both cutin and CUTICLE( which provides waxyprotective layer).

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A Bacteriophage is a virus that replicates inside the bacteria.
A virus is a nucleoprotein and the genetic material is infectious . Viruses that infect PLANTS have single STRANDED RNA and viruses that infect animals have either double stranded RNA or double stranded DNA.

The Bacteriophage is a virus that infect bacteria. Their PROTEIN coat is made up of nucleic acid .

Various VIRAL diseases are - AIDS , small POX , influenza etc..

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Characteristics of CYMOSE inflorescence are......

1) I'm cymose type of inflorescence the main AXIS terminates in a flower, hence the growth is limited .

2) The flowers are BORNE in a Basipetal succession.

3) At the Apex the flower is the OLDEST and the flower away from the Apex is the youngest.

4) It is a branched type of inflorescence.

Example of a cymose inflorescence is - Red campion.

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