CBSE Important Questions

Science Class X

Q. 16. Why the colour of lymph is yellow?

Q. 17. Name the reagent which is used to test the presence of starch.

Q. 18. Why walls of articles are thinner than ventricles?

Q. 19. The mode of nutrition in which digestive enzymes are secreted out side the body.

Q. 20. What is ATP?

Short answer type questions 2 marks

Q. 21. Why is the rate of breathing in terrestrial animals slower than aquatic animals?

Q. 22. The parts shown as A and B in the given diagram are

 

 

 

 

  The parts shown as A and B in the given diagram are

  A) A is epidermal cell, B is stomatal pore
  B) A is guard cell, B is stomatal pore
  C) A is epidermal cell, B is guard cell
  D) A is guard cells, B is epidermal cell

Q. 23. Which activity is illustrated in the diagram of an Amoeba shown below?

 

 

 

 

Q. 24. The diagram below represents urinary system in the human body. Identify the structure through which urine leaves the urinary bladder.

 

 

 

 

Q. 25. A student covered a leaf from a destarched plant with a black paper strip and kept it in the garden outside his house in fresh air. In the evening, he tested the covered portion of the leaf for presence of starch. What the student was trying to show? Comment.

Submitted By : Mr. Gaurav Mittal