Question

Which of the following is/are true/false regarding the development of an embryo?
(i) An embryo is made up of many cells.
(ii) The stage of development in which all the body parts can be identified is called as the foetus.
(iii) The stage of development in which the cells begin to form groups that develop into different tissues and organs of the body is called the embryo.
(iv) The embryo gets nutrition from the uterus.

• A. (i), (ii) and (iii) are true; (iv) is false.
• B. (i), (ii), (iii) and (iv) are true.
• C. (i) and (iv) are true; (ii) and (iii) are false.
• D. (ii) and (iii) are true; (i) and (iv) are false.

Answer 1

The correct option is A (i), (ii) and (iii) are true; (iv) is false.

A foetus refers to a prenatal mammal or other viviparous vertebrates between its embryonic state and its birth.
An embryo is a multicellular diploid eukaryote in its earliest stage of development, from the time of fertilization until birth, hatching, or germination.
Embryo gets nutrition from the placenta.
The placenta is defined as a temporary organ consisting of blood vessels and membranes that unite mother and fetus. The inner cells of the blastocyst become the embryo while the outer layer fills with blood from the mother's uterine lining. Blood vessels form in this area between the embryo and the mother's uterus allows the exchange of nutrients.