Digestive System

{:("Phylum","Level of organisation","Digestive system","Respiratory system"),("Aschelminthes","A","Complete","Absent"),("Echinodermata","Organ system","B","Present"),("Platyhelminhes","Organ","Incomplete","C"),("Annelida","Organ system","Incomplete","D"):} Select the option with correct identification of A, B, C, and D.

Mathc the two column and select the correct among option given. {:("Column I","Column II"),("Biomacromolecules",(i)"Alimentary canal and associated gland"),("Human digestive system",(ii)"Embedded in jawbones"),("Stomach",(iii)"Outer wall of visceral organs"),("Thecodont",(iv)"Converted into simple substances"),("Serose",(v)"J-shaped bag like structure"):}

Digestive juice lacking eazyme but aiding in digestion is

The digestive enzymes are able to digest meat taken in diet but does not digest the cells which are producing them. It can be explaned as follows.

Assertion :Digested and semi-digested food is absorbed by body surface in tapeworms. Reason: Digestive organs are absent in tapeworms.

Assertion: Bile is not a true digestive juice Reason: Bile lacks digestive enzymes.

Bile juice contains no digestive enzymes, yet it is important for digestion. Why?

The digestive enzymes are

Assertion. Lysosomes are organelle in eukaryotic cell that contains digestive enzymes to digest macromolecules. Reason. Lysosomes are also called phagolysosomes or heterophagosomes or digestive vacuoles.

Vein not blonging to digestive tract which becomes component part of hepatic portal system of Frog is