Concept explainers
To write:
The benefits of consuming the placenta after giving birth by many female mammals.
Introduction:
The word ‘mammals’ is originated from the Latin word ‘mamma’ means ‘breast’. Mammals are covered with fur or hair. The characteristic feature of the mammal is that they feed their babies with milk which is produced by the mother’s mammary glands.
The ‘placenta’ is the temporary organ that is attached to the lining of the uterus during pregnancy. It provides oxygen and nutrients to the embryo and helps in removing other waste products and carbon dioxide. It produces hormones that help to grow and developing baby. It protects the embryo against some infection mostly and specifically bacteria, not against viruses, during the pregnancy. The placenta is connected to the fetus (or embryo) through the umbilical cord.
Want to see the full answer?
Check out a sample textbook solutionChapter 39 Solutions
Principles of Biology
- Female mammals undergo continuous reproductive cycles during their reproductive life. In the sense of offspring production, what is the benefit of these continuous cycles?arrow_forwardWhy does continued breastfeeding decrease the chance of pregnancy? (Hint: Think about the effect the breastfeeding hormones have on estrogens and progesterone.)?arrow_forwardPredict what would happen if Ca2+ was injected into an unfertilized sea urchin egg.arrow_forward
- Which form of reproduction is useful to an animal with little mobility that reproduces sexually? a. fission b. budding c. parthenogenesis d. hermaphroditismarrow_forwardCompare the reproductive organs of reptiles and birds. How are their reproductive patterns advantageous for their survival?arrow_forwardOf all birds, the flightless kiwi has the highest proportion of yolk in its eggs and the longest incubation time. Explain why birds with the longest incubation times have the yolkiest eggs.arrow_forward
- Which is NOT a common characteristic of mammals? A) have small brains compared to skull size B) have three middle ear bones C) have hair or fur D) young are fed milk produced by the mothers mammary glandsarrow_forwardconsider a pig that has only fully formed ovary. how would this affect the pig's future reproduction?arrow_forwardThe diagram below represents some structures in the human female reproductive system. Use the diagram to answer the question that appears directly below it.arrow_forward
- Compare the male and female reproductive organs of reptiles and birds. Explain how are their reproductive patterns advantageous for their survival?arrow_forwardAquatic animals in which fertilisation occurs in water are said to be: (a) viviparous without fertilisation. (b) oviparous with external fertilisation. (c) viviparous with internal fertilisation. (d) oviparous with internal fertilisation.arrow_forwardWhich form of reproduction can result from damage to the original animal? a. asexual b. fragmentation c. budding d. parthenogenesisarrow_forward