Which mammals have more yolk than cytoplasm in their eggs
Placental mammals
Aquatic mammals
Marsupials
Egg laying mammals
(d) The egg laying mammals are known as prototherians. They have polylecithal eggs.
In a simplest type of placenta the foetal blood is separated from the maternal blood by six barriers. How many barriers are lost in human placenta
The villi which are formed by the allantochorion to form the intimate connection with uterine endometrium functions as
Ovum receives the sperm in the region of
The cyclic period of sexual activity in non-human female mammals is called
A layer of cortical granules is found beneath the
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