2.) Urine concentration depends upon the presence of hormone :

a.) Thyroxine  b.) Vasopessin c.) Melatonin d.) Adrenaline 

3.) In flatworms excretory organs are :

a.) flame cells  b.) green glands  c.) nephridia  d.) malpighian tubules .

4.)  Ascent of sap occurs through :

a.) Cohesion tension  b.) Mass flow  c.) Imbibition  d.) Capillarity

5.) Which one is an anabolic process ?

a.) Respiration  b.) Digestion  c.) Photosynthesis  d.)Ascent of sap

6.) A catabolic process is  :

a.) absorption of minerals  b.) ascent of sap  c.) respiration  d.) assimilation .

Q.)  What is Pleura ? 

2. Vasopressin.

3. Flame cells.

4. Cohesion tension

5. photosynthesis

6. Respiration

7. Pleura is the membrane that is present around the lung.

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