Identify the human development stage shown below as well as the related right place of its occurrence in a normal pregnant woman, and select the right option for the two together:

Developmental stage Site of occurrence
1. Blastula End part of fallopian tube
2. Blastocyst Uterine wall
3. 8-celled morula Starting point of fallopian tube
4. Late morula      Middle part of fallopian tube
Subtopic:  Implantation |
 79%
Level 2: 60%+
AIPMT - 2012
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Identify the incorrectly matched pair:
I: The embryo’s heart is formed After one month of pregnancy
II: Limbs and external genital organs are
well-developed
By the end of the second month of pregnancy
III: First movements of the foetus During the fifth month

1. Only I and III
2. Only II
3. Only III
4. Only I and II
Subtopic:  Fertilization | Implantation |
 70%
Level 2: 60%+
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