Question

3.
Which of the following statement(s) is/are correct?
Animals in which the cells are arranged in two embryonic layers, an external ectoderm and
an internal endoderm, are called diploblastic animals.
Notochord is an ectodermally derived rod like structure formed on the ventral side during
embryonic development in some animals.
In some animals, the body cavity is not lined by mesoderm, instead, the mesoderm is present
as scattered pouches in between the ectoderm and endoderm and such a body cavity is
called pseudocoelom.
1) Only(i)
2) Both (i) and (ii) 3) Both (i) and (iii) 4) All of these​

Answer 1

Answer:

all of these and both and both

Answer 2

Answer:

3)Both (i) and (iii)

Step-by-step explanation:

1)Animals in which the cells are arranged in two embryonic layers, external ectoderm and  internal endoderm, are called diploblastic animals.

This statement is true.

2) The Notochord is an ectodermal derived rod-like structure formed on the ventral side during  embryonic development in some animals.

This Statement is false.

The Notochord is a mesodermally derived rod-like structure not an ectoderm

Formed on a dorsal side, not on a ventral side.

Animals with notochord are called Chordates.

3. In some animals, the body cavity is not lined by mesoderm, instead, the mesoderm is present  as scattered pouches in between the ectoderm and endoderm and such a body cavity are  called pseudocoelom.

This statement is True.

The body cavity is lined by mesoderm is called Ceolem.

The body cavity is not lined by mesoderm is called pseudocoelom.

The body cavity is absent are called Acelomate.