Nitadion
What is meant by the nidation? Specify the phase of tmenstrual cycle where nidation takes place?
Expert
Nidation is defined as the implantantion of embryo within the uterus. Nidation takes place approximately around the 7th day after the fecundation that is, 7 to 8 days after the ovulation (obviously, it happens only if fecundation also occurs). As, it happens within the luteal phase the level of progesterone is high and the endometrium is in its best condition in order to receive the embryo.
How is the respiratory system in the aquatic molluscs characterized? What adaptive respiratory structure does terrestrial molluscs exists?
How arthropods grow?
Relational Database: It is a database which maintains a set of separate, related files (that is, tables), however combines data elements from the files for queries and reports whenever needed. The concept was introduced in the year1970 by Edgar Codd,
Do echinoderms exist in external or internal fecundation? Is there sex division between individuals?
Explain the term Sublimation energy in short?
Write down some main differences of vertebrate nervous systems comparing to invertebrates?
Briefly define the terms Birth rate and Mortality rate.
Write down the main phases and clinical manifestations of the schistosomiasis?
Why do cells of nephron tubules present a huge amount of mitochondria?
Write down the main mineral salts responsible for cellular osmotic regulation?
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