Question

Can someone please help me with these 3 questions (54,55,56)

Answer 1

Ans

Explanation:

QUE 54 : Ans 1.

QUE55: Ans.2  .. Light zonation in lakes : (from up to down)

        1)Limnetic

         2)Euphotic

       3)Disphotic

       4)Profundal   ( No light)

        5)Benthic (perpetually dark zone)

here light is present in upper 3 zones.

QUE56: ( i am little confused for answering this que.) For me answer should be 2. ( i think both statements are correct.)

Please do tell me the right answers of this , i"ll try to make any link then.