0
votes
0answers
31 views

Polymorphism in cnidarians?

The phenomenon of polymorphism in cnidarians is a particularly a troubling one, at least to me. I gather that it essentially refers to existence of various different forms or rather kinds of ...
6
votes
2answers
344 views

Why animals can move and plants cannot in general?

To clarify, I think the answer should be able to explain: What are animals? What are plants? What's the difference between animals and plants (How do biologists differentiate them, if they ...
9
votes
3answers
642 views

Species with reproduction barriers that can both reproduce with a third species

To start with, I do not have a sound knowledge in biology or any formal education in the area. I was told that one of the definition of a species is a reproductive barrier, which means that if two ...
6
votes
3answers
159 views

Where can I find the common names for the zoology taxonomy?

Forgive me if my question does not belong here or if I'm using incorrect terms, but I'm not educated in biology at all. I'm investigating the workings of the biological classification system. I was ...