Question

Which is not formed by endoderm
a. Pancreas
b. Kidneys
c. Liver
d. Lungs

Answer 1

Hint: The endoderm is one of the three essential germ layers in the early incipient organism. The other two layers are the ectoderm (outside layer) and mesoderm (center layer), with the endoderm being the deepest layer. Cells relocating internally along with the archenteron structure the inward layer of the gastrula, which forms into the endoderm.

Complete answer:
> The internal cell mass of the blastocyst after implantation separates into the external ectoderm, center mesoderm, and inward endoderm. These layers at that point form into tissues and organs of the undeveloped organism. Endoderm offers ascend to specific organs including the colon, stomach, digestive tracts, liver, lungs, and pancreas. Mesoderm offers ascend to the heart, kidneys, ligament, muscles, platelets, and different structures. Ectoderm shapes the external linings like the epithelium, mind, spinal rope, nerves, nails, and hair. So the right answer is B.

> The pancreas is an organ, around six inches since quite a while ago, situated in the midsection. It is formed like a level pear and is encircled by the stomach, small digestive system, liver, spleen, and gallbladder. The pancreas is formed of endoderm. So, option A is incorrect

> The biggest organ inside your body is the liver. It enables your body to process food, store vitality, and eliminate harm. It is formed of the endodermal layer. So, option C is incorrect.

> Inside the lungs, oxygen is traded for carbon dioxide squander through the cycle called outside breath. So, option D is incorrect.

Hence, the correct answer is option (B).

Note: Endodermis to build the linings of two cylinders inside the body. The main cylinder, reaching out all through the length of the body, is the stomach related cylinder. Buds from this cylinder structure the liver, gallbladder, and pancreas. The subsequent cylinder, the respiratory cylinder, structures as an outgrowth of the stomach related cylinder, and it inevitably bifurcates into two lungs. The stomach related and respiratory cylinders share a typical chamber in the foremost district of the undeveloped organism; this area is known as the pharynx.