Q1. Explain "Bile does not contain any enzyme but it is essential for digestion.
Q2. What are villi? Write their functions'.
Q3. Difference between Transpiration and Translocation.
Q4. Draw a diagram of human respiratory system, Human heart & label its parts.
Q5. Why small intestine in herbivors longer than in carnivores?
Q6. Difference between artery and vein?
Q7. What are the funcations of gastric glands present in stomach?
Q8. What are the following transports?
a) Xylem c) Pulmonary vein
b) Phyloem d) Vena cava
Q9. How do carbohydeates, Protiens and fats get digested in human beings?
Q10. What is rust?
Q11. What is redox reaction? Give example.
Q12. Aluminium is a reactive metal but is still used for packing food articles. Why?
Q13. Identify the type of reaction from the following equations:-
a) CuSO4 + Zn + ZnSO4; +Cu
. b) Cao +H2O + Ca(OH)2
Q14. A few drops of sulphuric acid are added to water before electrolysis. Why?
Q15. What are the antacids? Name two compound which are used as antacids?
016. A white powder is added while baking breads and cakes to make them soft and
fluffy. What is the name of the powder? What are the main ingredients in it? What are
the functions of each ingredient?
Q17. What is a spherical mirror? What are its types?
Q18. Define refractive index of a transparent medium. What is its unit? Which has a
higher refractive index, water or glass?
Answers
Answer:
YA......................GOOD QUESTIONS
Explanation:
Q1. Although it does not contain any digestive enzymes, it plays an important role in the digestion of fats. Bile juice has bile pigments such as bilirubin and biliverdin. These break down large fat globules into smaller globules so that the pancreatic enzymes can easily act on them.
Q2. The small intestine has millions of tiny finger-like projections called villi. These villi increase the surface area for more efficient food absorption. Within these villi, are present numerous blood vessels which absorb the digested food and carry it to the blood stream.
Q3. In Attachment
Q4. In attachment
Q5. Digestion of cellulose takes a longer time, because the enzymes are produced by the ruminant bacteria that live in the gut of the herbivore. Longer small intestine ensures that the food stays for a longer duration and proper digestion is possible.
Q5. Arteries are the carry pure blood expect pulmonary artery
Veins are carry impure impure blood expect pulmonary vein
Q6. The gastric gland system contains an assortment of segment cells and begins at the gastric pit or the opening to the lumen of the stomach.
There are three sorts of gastric organs. Each is recognizable by area and kind of secretion.
1) Pepsinogen: This is found in pepsin and helps in the digestion of protein.
2) Hydrochloric Acid: This is responsible for killing the germs present in the stomach which helps the enzyme by maintaining the acidic nature.
3) Mucous: This acts as a protective layer in the stomach against HCL.
