BIOLOGY


Q.1. HOW MANY ORGAN SYSTEN ARE PRESENT IN OUR BODY ?
ANSWER- THERE ARE NINE MAIN ORGAN SYSTEM IN OUR BODY:-
Ø  DIGESTIVE SYSTEM
Ø  RESPIRATARY SYSTEM
Ø  CIRCULATARY SYSTEM
Ø  NERVOUS SYSTEM
Ø  REPRODUCTIVE SYSTEM
Ø  INTEGUMENTORY SYSTEM
Ø  EXCRETORY SYSTEM
Ø  ENDOCRINE SYSTEM
Ø  MUSCULO-SKELTON SYSTEM

Q.2.WHAT IS DIGESTIVE SYSTEM OR DIGESTION ?
ANSWER-  DIGESTIVE SYSTEM IS THE SYSTEM IN WHICH LARGER FOOD PARTICLE BREAKS INTO SMALLER ONE WHICH CAN BE DIGEST.
MAIN PARTS OF DIGESTIVE SYSTEM ARE MOUTH, TEETH, TOUNGE, ESOPHAGUES, STOMUCH, SMALL INTESTINE, LARGE INTESTINE, RECTUM, ANUS, LIVER, PANEREAS, SLAVARY, GLANDS ETC.

Q.3. HOW DOES DIGESTIVE SYSTEM WORK ?
ANSWER-WHEN WE EAT SOMETHING, FOOD GOES TO ESOPHAGUS THEN IT GOES TO STOMUCH THEN TO SMALL INTESTINE THEN TO LARGE INTESTINE AFTER ABSORBING IT PASSESS THROUGH ANUS.

Q.4. WHAT IS LIVER ?
ANSWER- LIVER IS THE LARGEST GLANDS OF THE BODY ITS HELPS IN DIGESTION BY SCRETING BILE JUICE. IT IS PART OF DIGESTIVE SYSTEM.

Q.5. WHAT IS PANCREAS ?
ANSWER- IT IS SECOND LARGEST GLAND OF THE BODY. IT IS THE PART OF DIGESTIVE SYSTUM. IT HELPS IN DIGESTION BY SCRETING MANY ENZYMES.

Q.6. WHAT IS GALL BLODER ?
ANSWER- IT IS THE PART OF DIGESTIVE SYSTEM WHICH STORES THE BILE JUICE SCRETED BY THE LIVER.

Q.7. WHAT IS CIRCULATORY SYSTEM OR CARDIO-VASCULAR SYSTEM ?
ANSWER- CIRCULATORY SYSTEM IS THE SYSTEM IN WHICH CIRCULATION OF BLOOD TAKES PLACE IN THE WHOLE BODY. THE MAIN PARTS OF CERCULATORY SYSTEM ARE HEART, ARTERY, VEIN, CAPILLARY ETC.

Q.8. WHAT IS HEART ?
ANSWER- HEART IS THE PUMPING ORGAN OF CIRULATORY SYSTEM.

Q.9. WHAT IS ARTERY ?
ANSWER- ARTERY IS THE BLOOD VESSEL THAT CARRIES BLOOD FROM HEART TO WHOLE BODY. IT CARRY PURE BLOOD.

Q.10. WHAT IS VEIN ?
ANSWER- VEIN IS THE BLOOD VESSEL THAT CARRIE BLOOD FROM WHOLE BODY TO HEART. IT CARRY IMPURE BLOOD.

Q.11.WHAT IS CAPILLARIES ?
ANSWER- IT IS THE JUNCTION OF BOTH ARTERY AND VAIN.

Q.12. HOW DOES CIRCULATORY SYSTEM WORK ?
OR
EXPLAIN THE FUNCTION OF HEART ?
ANSWER- VIA THE TWO GREAT VAINS THE IMPURE BLOOD OF THE WHOLE BODY GOES INTO RIGHT ATRIUM THEN GOES INTO RIGHT VENTICLE THEN BLOOD GOES INTO LUNGS. WHERE PURIFICATION OF BLOOD TAKES PLACE. THEN FROM LUNGS BLOOD GOES INTO LEFT ATRINUM THEN BLOOD GOES INTO LEFT VENTICAL THEN THROUGH AORTA BLOOD GOES INTO WHOLE BODY.

Q.13. HOW MANY CHAMBER IN THEN HEART ?
ANSWER- THERE ARE FOUR CHAMBER IN THE HEART. RIGHT ATRINUM, LEFT ATRINUM, RIGHT VENTRICLE, LEFT VENTRICLE.

Q.14. WHAT IS RESPIRATORY SYSTEM ?
ANSWER- RESPIRATORY SYSTEM IS THE SYSTEM IN WHICH EXCHANGE OF GASSES TAKES PLACE. THE MAIN PART OF RESPIRATORY SYSTEM ARE – NOSE, TRACHEA, BRONCHUS, LUNGS, ALVEOLY ETC.

Q.15. WHAT IS LUNGS ?
ANSWER- LUNGS IS THE PART OF RESPIRATORY SYSTEM IN WHICH PURIFICATION OF BLOOD & GAS TAKES PLACE.

Q.16. HOW DOES RESPIRATORY SYSTEN WORK ?
ANSWER- WHEN WE BREATH BY NOSE THE AIR GOES TO TRACHIA THAN GOES TO BRONCHIS WHICH IS IN LUNGS THEN GOES TO ALVEOLY WHERE PURIFICATION OF AIR TAKES PLACE.

Q.17. WHAT IS ALVEOLY ?
ANSWER- IT IS THE SMALLEST UNIT OF REPIRATORY SYSTEM. IT IS AIR SACS.

Q.18. WHAT IS NERVOUS SYSTEM ?
ANSWER- NERVOUS STSTEM IS THE SYSTEM WHICH CONTROL AND CORDINATES THE WHOLE BODY.
MAIN PART OF NERVOUS SYSTEM ARE- BRAIN, SPINAL CORD, NERVE, NEURONS.

Q.19. WHAT IS BLOOD ?
ANSWER- BLOOD IS THE LIQUIDFLUID THAT PRESENT IN THE BODY. BLOOD CONTAINS CELLS AND PLASMA.
BLOOD CARRY OXIGEN AND NUTRIENTS TO THE CELL OF THE BODY AND ALSO CARRY AWAY CARBON-DIOXIDE(CO2) AND OTHER WASTE PRODUCTS FROM THE BODY CELLES.

Q.20. WHAT ARE THE BLOOD CELLS ?
ANSWER-  THERE ARE THREE TYPES OF BLOOD CELL- R.B.C., W.B.C., PLATELET.

Q.21. WHAT IS CELL ?
ANSWER- CELL IS THE STRUCTURAL AND FUNCTIONAL UNIT OF THE BODY. IT IS THE SMALLEST UNIT OF THE BODY.

Q.22. WHAT IS TISSUE ?
ANSWER- COLLECTION OF CELL IS CALLED TISSUE.

Q.23. WHAT IS NEFRON ?
ANSWER- SMALLEST UNIT OF KIDNEY IS CALLED NEFRON.

Q.24. WHAT IS NEURONE ?
ANSWER- SMALLEST UNIT OF NERVOUS SYSTEM IS CALLED NEURONE.









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