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Organism does not have respiratory system because they don't have specialized tissue to perform such type of WORK as complex organism do. Simple Organism need special TISSUES to RESPIRE but their BODY design is not CAPABLE of doing such things.

ry BIRDS FLY to far AWAY places because of CLIMATIC changes

or GROUPS of MICROORGANISMS are:bacteriafungiprotozoavirusalgae

cell                                      PLANT celldon't have cell WALL                          have cell wallchloroplasts are absent                   chloroplasts are presentusually,smaller in SIZE                      they are larger than animal CELLS

ost COMMON CARRIER of communicable diseases is HOUSE FLY.

e FIRST as because any animal grows from its INITIAL stage as egg.So a CHICKEN ALSO is FORMED by the cleavage,gastrulation and neuralation of the egg.

oing a bit of RESEARCH,  the common consensus among reputable sources is that zebras are black with white STRIPES. Now, before ANYONE who disagrees takes my head off, you should know that there is actually a bit of LOGIC and science behind this reasoning.Hence zebras are black with white stripes.HOPE IT WOULD BE HELPFUL 2 U :)

a REFERS to all plants  in a particular  area.    Fauna refers to all animals LIVING in a particular area.2) Some examples of Flora are - Mango , Teak , Jamun , Sal , ETC   Some exmaples of Fauna are - Crocodiles , ELEPHANTS , Rhinoceros

use saucepan handles have to withstand HIGH temperature during cooking . Thermosetting PLASTIC WONT not melt .B)because All these need to be durable and should withstand continuous use over many years . Moreover , in case of some heating DUE to electric current ; they should not melt  .

den increase in height and weight.(ii) Broadening of shoulders and widening of CHEST in BOYS. In girls, the region below waist becomes wider.(iii) In boys, under the influence of hormones, the larynx becomes prominent, the vocal cords become LONGER and THICKER. These changes cause the voice to become hoarse.(iv) Appearance of hair in areas such as underarms, face, hands, and legs.(v) Appearance of acne as a result of excessive secretion of oil from SKIN.

ution is the process of the shedding of uterine lining on a regularly monthly basis.It begins at puberty and is the reproductive cycle of female.⇒Every month, the uterine PREPARES itself to recieve a FERTILISED EGG.Therefore,the inner linning of uterine becomes THICK and is supplied with blood to nourish the embroyo.If the egg is not fertilized then the lining of the uterus breaks down and get released in the form of blood through the vagina.This process lasts for about two to eight days.This OCCURS in every month and is known as Menstruation Cycle.

tement is TRUE

is PRODUCED with the HELP of  YEAST

Reproduction :  Asexual reproduction takes PLACE in lower level organisms [unicellular] . In asexual reproduction there will be no presence of male and female gametes.The 2 different types of asexual reproduction are i) Binary fission II) BuddingBinary fission : During binary fission the mother cell would be divided into EXACT 2 daughter cells . BUDDING : During budding a small PART of the mother cell would bulge and then gets divided from the mother cell and grows into a new individual .

gland : it helps us to CONTROL our anxiety , stress, tension and other emotionsthyroid gland ; it helps in metabolism. it secretes the thyroid gland. the more or less of a thyroid gland causes MANY disorders in our body. some are GOITRE , cretinismhypothalamus gland : it controls the amount of hormones secreted by the pituitary glandpineal gland : it secretes the hormone metaloninhope I helped u...plz mark as the BEST!!

can be called as a group of CELLS with similar structure and function which work TOGETHER to perform a TASK in our body.Different cells make up tisues,tissues make up organ,organs make up organ system and so on. Two tissues are -Plant tissues and ANIMAL tissues.

the FASTEST nerve impulses in humans travel at eight METRES PER SECOND

, COELENTERATES and HELMINTHS

sis is the MOVEMENT of water inside the cellwhereas exosmosis is the movement of water OUTSIDE the cell. It's clear that ENDO means in and exo means out..The definition of exosmosis and endosmosis is that to remind it permanently is "exo" is to exit and "endo" is to ENTER in.That is exosmosis is the losing of water of a cell . Endosmosis is the ENTERING of water to a cell .

ction is very IMPORTANT as it continues the same kind of living organisms and KEEPS the balance of the WORLD PROPERLY

phosis is a biological process by which animal develops by PHYSICALLY after birth or hatching.Examples- METAMORPHISM of dragonfly from NYMPH to ADULT.

re also known as SEXUALLY transmitted diseases. However, such sexually transmitted diseases does not spread throug casual physical but it spread through AIDS Virus or blood to blood contact with INFECTED people. STD'S can be PREVENTED by antivital, suppresive medication to shorten and prevent OUTBREAKS !

us tissue is a specialized tissue that is FOUND in all nervous systems like brain SPINAL cord and all over the human body.It is used to transfer impulse from one nerve cell to another.It is used to maintain a proper co ordination among various activities in human body.2.Neurons are structural and functional unit of nervous system.Neuron contains axon,DENDRON,terminal branches and dendrities.The DENDRITES RECEIVES impulse from the terminal branches of adjacent nerve cell and the chain follows.

(and wool, silk, etc.) SWELL up when they COME in contact with WATER because they absorb water. They SUBSEQUENTLY shrink when the water is removed from them.

esticides can INCREASE FOOD production.Proper methods of GROWING CROP can increase productivity.Proper irrigation and FREE from pests.

is part of THROAT . It is responsible for PRODUCTION of sound. Larynx moves when we swallow SOMETHING . Inside the larynx there are 2 vocal cords There are small gap between them .This gap allow air to pass through it. When we SPEAK, air is forced into this small gap by the lungs. This prompt vocal cords to vibrate. Since vibrating object produce sound , sound is produce due to the VIBRATION of vocal cords.

rd cells controls the OPENING and closing of stomata.The various FACTORS to which the guard cells respond translates into the complexity of the NETWORK of SIGNALING pathways that CONTROL stomatal movements

because rubber cuts the flow of current and stops the current from PASSING their BODY as it is an INSULATOR and our body is a conductor of ELECTRICITY.......

not waste them.I would use it on the other day.I would MAKE some new  DISHES from them.I would give it TI some animals such as MONKEYS,dogs,birds ETC.

e will be no oxygen burning will not take place. One experiment to show that AIR supports burning is -Burn 2 candles and fix them on a table. COVER one of them with a glass tumbler. The candle which is covered appears to be EXTINGUISHED and the UNCOVERED candle CONTINUES burning. This experiment proves that air supports burning.

ht occurs when there is shortage of rain for a particular period of TIME in a particular PLACE !

of Fossil FUELS Releases gases like Sulphur Di OXIDE, Nitrogen Oxide etc.,. Which mix ewith water during rain and CAUSES Acid Rain..Thus it makes Water POLLUTED

aining a LIQUID secretion  /  vesicle, or bladder is called cyst.hope helped U DEAR :-)