Answer:
1) To form a multicellular organism, a zygote must divide into 16 cells which produces ball structure called a morula. After that, morula is converted into a structure called blastula.
2) Adult stem cells are responsible for the maintenance of tissues and repair the damage tissues in the body. It is also called somatic stem tissue. It increase in number through cell division.
Answer:
A
Explanation:
this is because, in smaller organism their SA/V ratio is large hence they have efficient transport of materials within their cells
Answer
There is not enough antibody-producing clones during development therefore the immune system suffers.
C.) the cooler the wire, the less the resistance
