Column I |
Column II |
||
(a) |
Ammonotelism |
(iii) |
Bony fish |
(b) |
Bowman’s capsule |
(v) |
Renal tubule |
(c) |
Micturition |
(iv) |
Urinary bladder |
(d) |
Uricotelism |
(i) |
Birds |
(e) |
ADH |
(ii) |
Water reabsorption |
Describe the role of liver, lungs and skin in excretion.
What is meant by the term osmoregulation?
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell.
What is the site of gaseous exchange in an insect?
What are nuclear pores? State their function.
How do neutral solutes move across the plasma membrane? Can the polar molecules also move across it in the same way? If not, then how are these transported across the membrane?
Describe the structure of the following with the help of labelled diagrams.
(i) Nucleus
(ii) Centrosome