Question

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Answer 1

Answer:

Ques1

Heterotrophic nutrition is known to be the mode of nutrition in which certain organisms are dependent on other organisnsms to survive.

Ques2

Parasites are those organisms which obtain their nutrition from other living organisms where as saprophytes obtain their nutrition from dead decaying organic matter.

Ques4

Saliva contains the enzyme amylase, also called ptyalin,which is capable of breaking down starch into simpler sugars.