Do all mammals contain a placenta
Do all mammals contain a placenta?
Expert
Mammals of the monotreme group (that is, platypus and echidnas) are oviparous, egg-laying, and they do not encompass a placenta. Mammals of the marsupial group (that is, kangaroos, koalas and opossums) do not contain a placenta either; females of this group give birth to embryonic young that then carry on growth in the mother’s pouch. Placenta just forms in female placental mammals.
Why is iodine much important for the human beings?
Describe the term goiter? Also explain endemic goiter? How this problem is socially resolved?
What happens to a denatured enzyme regarding its functionality? How can that result be explained with the help of the lock and key model?
How are Annelid characterized according to illustrations of representing beings, fundamental morphology, kind of symmetry, germ layers and coelom, excretory system, respiratory system, digestive system, circulatory system, nervous system and kinds of reproduction?
Coordination vs cooperation Basis Coordination
What is meant by the term proteomics? And also describe the term transgenic organisms?
Explain main endocrine glands of human body?
Specify the type of muscle tissue which moves the bones?
How gas exchange is done in fishes?
Pilot Manufacturing: It is a line of production established in industries, or manufacturing fields in order to confirm whether new processes employed for manufacturing will be more proficient or not.
18,76,764
1935251 Asked
3,689
Active Tutors
1458947
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!