Biology Questions and Answers
- How is fecundation done
in insects (external or
internal)? Is there copulation
between insects?
Fecundatiocopulation.n in insects is internal, with
- How are the main classes
of arthropods classified
according to the presence of
larval stage in their embryonic
development?
In crustaceansdirect and others with in there are species withdirect
development. In insects there are
species without larval staginsects), others undergoing indirecte (ametab olic
development beginning with an egg
stage followed by a nymph stage(hemimetabolic insects) and others with (^)
indirect development beginning with the
larval stage (holometabolic insects).
The transformation of a larva into an
adult individual is called Hemimetabolic insects undergometamor phosis.
incomplete metamorphosis while
holometametamorpbolic insects undergo comhosis. plete
- What are nymph and
imago?
Nymphs are larvae of hemimetabolic
insects (like gvery similar to the adult insect althoughrasshoppers). They are (^)
smaller. In holometabolic insects (like
butterfli(chrysalis,es) the larva makes a cocoo pupa) where it lives until n
emerging into the adult form. Imago is
the name given to the adult form ofinsects with indirect development.
- Is the stage when an
insect larva is within a cocoon
a stage of total biological
inactivity?
The period when the larva is within cocoon is a time of intense biologicalits
activity since the larva is being
transformed into an adult animal. - How are the three main
arthropod classes
characterized according to the
presence of wings?
Crustaceans and arachnids do not have
wings. Most insects have wings. - Most insects have wings.
Which is the other animal
phylum that contains
creatures with analogous
organs?
Besides the phylum Arthroanimal phylum with flying creatures ispoda another
the chordate pchiropterans mammalshylum, bir (bats) haveds and (^)
wings. In the past some reptiles that
possiblytoo. There are also amphibians an originated the aves had wingsd
fishes that jump high exploring the
aerial environment.
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