Friday, November 2, 2012

Transportation and Excretion 7th Biology Hots Solved questions

1. Excretion is the removal of metabolic waste products called ---------------

(Excreta)

2. The mammalian RBCs are without ------- 

(nucleus)
3. The heart is covered by a protective double walled sac called -----------filled with -------

( pericardium , pericardial fluid.)

4. The heart is made up of special type of muscles, called ------------ 

(cardiac muscles)

5. The separation wall between right and left side of heart is called ------------

(septum)

6. ------------ regulate the flow of blood unidirectional from right auricle to right ventricle and not backwards. 

(Valves)

7. Expanded condition of right and left ventricles when full of blood is called ----------------.

(Diastole)

8 The state of contraction of of right and left ventricles is called -------- (systole)

9. ---------------- are thinnest blood vessel (Capillaries)

10. Except the -------------- veins all other veins carry deoxygenated blood.

( pulmonary)

11. ----------- are called as master chemist of our body. 

(kidney)

12. Kidneys eliminate the waste materials in the liquid form called --------

( urine)
13. Water reaches great heights in the trees because of suction pull caused by ---- 

(transpiration)
14._____ is the instrument to amplify the sound of the heart. 

(Stethoscope)

15. Arteries branch into arterioles. Arterioles branch into fine tubes called meta arterioles  The meta arterioles end up in the tiny blood vessels called----------

( capillaries).
16.The fluid part of blood is called ______________.

Plasma

17.Blood is red in colour due to the presence of a pigment called _________.

Hemoglobin

18. The ___________ cells in our body fight against germs.

White blood

19. __________ help in clotting of blood.

Platelates

20.The number of heart beats per minute is called _______________.

Pulse rate

21.The waste dissolved in water is removed as ______________.

Urine

22. The filtering of blood through an artificial kidney is called _____________.

dialysis

23. Salts and urea is removed along with water as ______________.

Urine

24.________________ carry blood from the heart to all parts of the body.

Arteries

25.________________ carry blood from all parts of the body to the heart.

Veins

CBSE  Pathshala : Transportation and Excretion 7th Biology Hots Solv...Read full post


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