Question

[A] In lower invertebrates, the digestion is intracellular while in higher forms it is extracellular.
[R]: Extracellular digestion is a highly evolved process, it takes place in the gut.

A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false

Answer 1

Hint:-The digestion term is used for food materials or the breakdown of nutrients so that the complex nutrients can be converted into simpler forms to absorb easily. The animal kingdom undergoes 2 types of the digestion process.

Complete Answer:-
The vertebrates are the subphylum in which many higher animals present or given preference. For example, fishes, amphibians, reptiles, birds, and mammals.
They all are the part vertebrates subphylum.
Other animals are considered in subphylum invertebrates. However, in lower animals, intracellular digestion occurs which means the digestion occurs inside the cytoplasm of the cell.
For extracellular digestion, the proper digestive system and various enzymes to breakdown the food materials passing through the gut and intestine.
The digestive system is a well-developed system for which the body organization of the animals also plays a major role.
For example, Porifera, their body organization level is cellular and they do not have an organ system. We get only a loose aggregate of the cell so the digestion occurs inside the cell.
So, this digestion is known as intracellular digestion. Birds and mammals are highly developed and food enters from one side it gets evacuated.
Each living being expects energy to be active. However, to get energy from its external climate, cells must recover atoms from their environmental factors as well as break them down.
This cycle is known as intracellular digestion. In its broadest sense, intracellular absorption is the breakdown of substances inside the cytoplasm of a cell.


So, the correct answer is “option-A”

Note:- In detail, a phagocyte's obligation is acquiring food particles and processing it in a vacuole. For instance, following phagocytosis, the ingested molecule (or phagosome) wires with a lysosome containing hydrolytic compounds to frame a phagolysosome; the microbes or food particles inside the phagosome are then processed by the lysosome's proteins.