Page 97 - EM BIOLOGY NOTES 10TH CLASS PSR DIGITAL BOOKS

ANSWER THE QUESTIONS WITH THE HELP OF PARAGRAPH

1. Saliva contains an enzyme (a) ________ which helps in the breakdown of complex carbo-

hydrates to simple ones. This process of breaking down of complex substances into simple
substances is called (b) ________

2. Fats are digested by converting them into small globule like forms by the help of ________
secreted from liver. This process is called ________

3. Haemoglobin, Pigment Quite like chlorophyll. The major difference between haemoglobin
and chlorophyll is haemoglobin contains ________ where as chlorophyll contains ________

4. In plants gaseous exchange takes place in ________. It also takes place like surface of

roots ________ on stem.
5. Blood is a substance which contains solid and liquid particles.________ is the substance

that contains blood with out solid particles. The liquid portion after formation of blood clot
is ________

6. When the blood flows out, the platelets release an enzyme called ________. Thrombin
acts on another substance called ________ that is present in dissolved state.

7. Kidney shows two regions. Dark coloured outer zone is called the ________ and pale inner

zone is called ________
8. The life span of RBC ________ days. After that they get destroyed in the liver and produces

bile pigments like ________ which are metabolic wastes of haemoglobin of dead R.B.C.s.
9. The brain is covered by three layers called ________. The space between the inner layers

filled with fluid called ________ It protects the brain against shocks.

10. In sexually reproducing organisms usually single fertilisation give rise to ________. In
plants there occurs a second fertilisation giving rise to ________

11. The walls of the food pipe secrete a slippery substance called ________. It lubricates and
protects the oesophageal walls from damage. This helps the food ________ to slide down

easily move in the tube.

12. Passing of characters from parent to offsprings is called ________. The process in which
traits are passed from one generation to another generation is called ________

13. The study of fossil is called ________. Palaeontologists determine the age of fossil by
using ________ method.

14. Any type of plant or animal material that can be converted into energy is called ________.
When these materials are used for energy production they are known as ________

15. ________ were produced from remains of ancient plants and animals. They include ________

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