Question

Which of the following is mesodermal in origin?
(A) Retina
(B) Enamel of teeth
(C) Heart
(D) Liver

Answer 1

Hint: Mesoderm is the primary gum layer which surrounds the embryo of the animal. This lies between the layer of the ectoderm and the endoderm layers of the embryo. This mainly gives rise to the connective specialized tissues at the time of maturation.

Complete Answer:
Mesoderm is the middle gum layer of the animal embryo after that it is developed into various tissues. This is created during the third week of the gastrulation. At starting the streak is created and this laterally develops into the epiblast and the hypoblast.

(A) Retina: It is the innermost and the light sensitive tissue in the eye. The image that is viewed by the lens falls on the screen on the retina. It is formed from the neuroepithelium of the ectodermal origin.
(B) Enamel of teeth: It is the very hardest tissue and this forms the external cover of the teeth. It is derived from the ectoderm
(C) Heart: Heart is the circulatory organ which pumps the blood to the various parts of the body. It is derived from the mesoderm of the embryo.
(D) Liver: Liver is an important organ that is involved in the production of many hormones and also secretes bile juice. It is of endodermal origin.
Of the given option, Heart is the organ with the mesodermal origin.

Thus, the option (C) is correct.

Note: Mainly the muscle and the connective tissue had the mesodermal in origin. Skeletal muscle, cardiac muscle, Kidney cells of Kidney, red blood cells, dentine of the teeth and the smooth cells in the gut are derived from the mesodermal origin.