Question

Which of the following statements are correct about the cellular organization?
I. Mesoglea is the layer present between ectoderm and endoderm of diploblastic animals.
II. Mesoderm is the layer present between ectoderm and endoderm of diploblastic animals.
III. Mesoderm is the layer present between the ectoderm and endoderm of triploblastic animals.
IV. Mesoderm is the layer present between ectoderm and endoderm of triploblastic animals.

Answer 1

Answer:

Correct option is

All of the above

A) Mesoglea is the gelatinous material between the outer layer (ectoderm) and inner cellular layer (endoderm) of jellyfish and other coelenterates and it is undifferentiated.

B) The mesoderm forms the middle layer of the early trilaminar embryo germ layers (ectoderm, mesoderm and endoderm). It is absent in diploblastic animals.

C) Mesoderm is formed through a process of gastrulation.

So, the correct answer is 'All of the above'.