Fecundation in amphibians is external or internal
Whether fecundation in amphibians is external or internal? Also explain whether amphibians are evolutionarily proximal to fishes or to reptiles?
Expert
In majority of the amphibian species, fecundation is external. This trait is common in bony fishes too and it proove that the reproductive system and the embryonic development of amphibians are inherited from the osteichthyes. Although they have external fecundation, amphibian female and male copulate to stimulate for the liberation of egg and sperm cells. This process does not illustrate internal fecundation as the gametes unite in the water.
Explain the term evolutionary tree? Is there an accurate evolutionary tree known by science which describes the emergence and origin of each and every kind of living being?
Perception is a process consisting of several sub-processes. We can take an input-throughput-output approach to understand the dynamics of the perceptual process. This approach emphasizes that there is input, which is processed and gives output. The stimuli in the environment - subjects, events,
Explain various types of the OLAP?
Distinguish between spermatids and sperm cells? Also explain about transformation of spermatids into sperm cells?
Illustrate water is a polar or a non-polar molecule? What is the effect of that characteristic for the function of water as a solvent?
From intestinal lumen through to tissues - Explain the route of nutrients after they get digested?
Is embryonic growth in birds direct or indirect? Answer: The embryonic growth is direct, there is no larval phase.
Assume that Bill is a big movie buff & enjoys renting movies from the local video rental outlet. Suppose that he is eager to pay $5 for the first movie he rents for the weekend but would pay only $4 for a second and yet only $3 for a third movie. If the vi
Why is it difficult to create effectual vaccines against the viral infection such as dengue and AIDS?
On what structural stage of enzyme (primary, secondary, tertiary, and quaternary) does the enzyme-substrate interaction based?
18,76,764
1943211 Asked
3,689
Active Tutors
1446449
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!