TEST PAPER 28 : CHAPTER 14 : TRANSPORTATION, CIRCULATION & EXCRETION IN ORGANISMS : 25 MARKS

There are 13 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 3]

1. Which one is not a property of blood plasma ?
   
   
   
   1. It is pale yellow.
   2. It is nonliving.
   3. It is acidic.
   4. It carries hormones.
      
   
   
2. Which of the following is true ?
   
   
   
   1. Heart purifies blood.
   2. Heart separates excretory wastes from blood.
   3. Heart circulates blood.
   4. Heart supplies oxygen to blood.
      
   
   
3. Where are antigens located ?
   
   
   
   1. On WBC
   2. On RBC
   3. On platelets
   4. In blood plasma
      
   
   

   SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 3]
   

4. Where are plant hormones synthesised ?
5. Define : Blood transfusion.
6. Why is the circulation of blood through heart called 'double circulation'?
   
   

   SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 8]
   

7. Write a note on tracheids.
8. Write a note on blood platelets.
9. Draw a neat diagram of human excretory system.
10. Describe the process of formation of urine.
    
    

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]
    

11. Describe clotting of blood.
12. Write a note on lymphatic system.
    
    

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]
    

13. Describe excretion and osmoregulation.