Question

Identify the correctly matched pair/pairs of the germ layers and their derivatives.
A) Ectoderm- Epidermis
B) Endoderm- Dermis
C) Mesoderm- Muscles
D) Mesoderm- Notochord
E) Endoderm- Enamel of teeth

Answer 1

The three germ layers ectoderm, endoderm and mesoderm are formed at the end of the gastrulation stage and each of them play specific roles in the body.

Complete answer:
There are three germ layers that occur in our body:
a) Ectoderm- the outermost layer
b) Mesoderm- the middle layer found between the ectoderm and the endoderm.
c) Endoderm- the innermost layer

Let us discuss the role of each germ layer
-Ectoderm is responsible for the formation of Epidermis which is the outermost layer.
-Mesoderm forms the dermis.
-Mesoderm also forms the skeletal muscles.
-The notochord is also formed by the mesoderm germ layer.
-Ectoderm is responsible for forming the enamel of teeth.

Therefore, A, C and D are the correct options.
Option B and E: Therefore, this is the incorrect option.

Thus, the correct option is A) Ectoderm- Epidermis, C) Mesoderm- Muscles, and D) Mesoderm- Notochord.

Note: These germ layers are the group of cells which usually interact with one another during embryo development.
-They help in the formation of tissues and organs.
-Genes play an important role in differentiation of these germ layers to play specific functions.
-The endoderm forms the lining of the stomach, small intestine and colon. Mesoderm forms bone, cartilage, connective tissue and adipose tissue. Finally, the ectoderm forms the retina, spinal cord, posterior pituitary and brain.