Answer:
True
Explanation:
The embryonic development of fertilized egg includes cleavage, blastulation, implantation, gastrulation and organogenesis.
Cleavage division divides the zygote into blastomeres. First cleavage division result in two blastomeres, second cleavage division results in a transient three cell stage. Third cleavage division forms 8 blastomere. These result in the formation of a sold ball of cells called morula. Morula is 16 cell stage and it descends towards the uterus in 4-6 days. As the morula enters the uterus, it gets a rich supply of nutrients. Trophoblast cells are formed which secrete a fluid into the interior creating a cavity called blastocoel. The inner cell mass now comes to lie on one side as embryonal knob. With the formation of blastocoel, morula is converted into blastula which is called blastocyst in mammals.
Population ...................
Answer:
Nearly all
Explanation:
We need the for helping with mechanical digestion and keep our mouth moist.
Answer:
It is secreted by the pancreas
Explanation:
Insulin is used for negative feedback of blood sugar levels in the blood. It promoted uptake of glucose by cells when the blood sugars are high, especially after a meal. Glucagon hormone, on the other hand, is responsible for the positive feedback.
Answer:
The average of the prices paid by consumers for a fixed market basket of goods and services.
Explanation:
C
