Is fecundation in amphibians internal or external
Is fecundation in amphibians internal or external? In this feature are amphibian’s evolutionarily proximal to fishes or to reptiles?
Expert
In the majority of amphibian species, fecundation is external. This feature is very common to bony fishes as well and it exhibits that the reproductive system and the embryonic growth of amphibians are a heritage from the osteichthyes. Curiously though having external fecundation amphibian female and male copulate to stimulate the release of sperm and egg cells. This phenomenon doesn’t characterize internal fecundation as the gametes unite in water.
Define the tem cyclosporin? How are fungi associated to this substance?
How digestion in beings of the phylum Annelida work does and what kind of digestive system do they contain?
What are the major factors which modify the speed of enzymatic reactions?
Write some basic functions of the cytoskeleton?
Explain the lateral meristems? Specify where they can be found and which type of the plant growth do they promote?
Write down the differentiation between endocrine gland and exocrine gland?
According to stimuli they gather how are the sensory receptors categorized?
What do you know about an evolutionary explanatory hypothesis for the secretion by the heart of hormone which regulates the renal function? Name that particular hormone?
Explain the term lichens? How do fungi contribute in this ecological interaction?
Line Extension: A firm markets one or more latest products in an established and famous brand identity as a multi-product branding policy. The aim is to take benefit of widespread name recognition of the original brand and satisfy various customer req
18,76,764
1938746 Asked
3,689
Active Tutors
1448966
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!