What is panspermia
Explain the term panspermia?
Expert
Panspermia is defined as the hypothesis which explains life over the earth as not begin from the planet. The idea states that the first living beings which colonized the earth arrive from the outer space, from other planets or even from other galaxies by traveling within meteorites, comets. As per this hypothesis, even type of life now existent over earth would have also been seeded intentionally by the extraterrestrial beings in the other stellar and planetary systems.
Regarding the existence of segmentation (or metameres) in their body to which another already studied the phylum are arthropods proximal?
Write down the protective structures of central nervous system present in the vertebrates?
Elaborate the purpose of the vitellus in the vertebrate egg? How are these eggs classified in relation to the quantity of vitellus within them?
What do you mean by diffusion?
Explain the experiment carried out by the Stanley Miller (1953) upon the origin of life?
How large size of some cephalopods related to the type of circulatory system they present?
Explain the function of secretin in digestive process and Where it is generally produced?
Write the basic difference between cell wall and plasma membrane?
Briefly, explain regarding the foreignness of a molecule, that makes a substance antigenic?
Regarding their permeability how membranes are categorized?
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