Biology Questions and Answers
- How has the importance of
the brain evolved from fishes
to reptiles?
From the least to the most complexbrain structure, it is evident that the (^)
brain, from fisReptilia, became hes to blarger eings of the classand
predominant in the central nervous
system.
- How is reproduction done in
beings of the class Reptilia?
These beings reproduce sexuallythrough internal fecundation by means (^)
of copulation between male and female
individuals. Textraembryonic membranes. Thehey lay eggs with sh ell and
embryo and outside thus develops within the mother’s body (therethe egg (^)
are also ovoviviparous reptiles that
retain thhatching).e egg within the body until
- Do beings of the class
Reptilia have direct or indirect
development?
In beings of the classembryonic development is direct. So Reptilia the (^)
there is no larval stage.
- Compared to amphibians
what are the two reproductive
novelties of beings of the class
Reptilia for the survival in dry
environments?
Compared to amphibians threproductive innovations of beings ofe two main
the class Reptilia for the terrestrial
habitat are internal fshelled eggs. ecundation and - Concerning the
maintenance of body
temperature how do beings of
the class Reptilia classify?
Like fishes athe class Reptilia are heterothermicnd amphibians, beings of
animals (also known as poikilothermic,
or ectothto control by ermic),themselv i.e., thes their bodyey are not able
temperature and thus they depend on
external warm sun). sources (mainly the - What is an example of a
hypothesis which may explain
why there is not a big
representation of the class
Reptilia found in polar
regions?
Beings of the class Reptilia are
abundant and more diverse in hotclimate regions and they are rare in (^)
intensely cold regions like close to the
earth poles. Tthese animalshis is explain are heterothermic, i.e.,ed because
they have “cold blood” and they need an
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