Biology Questions and Answers
- What is the type of
digestion that occurs in
cnidarians?
These animalsand they make extracellular a have a digestive cavitynd
intracellular digestion takes place withidigestion. The extracellularn the
digestive cavity.
- What are cnidocytes? What
is the name of the capsule
inside the cnidocyte? What are
the biological functions of this
structure?
Cnidocytes arin coelenterates. Te specialized cells phey are found in theresent
epidermis anthat can hurt, pd contain aralyze toxic substancesor even kill other (^)
animals.
Each cnidknow as nocyte has an ematocyst where the actualinternal capsule
urticatingcnidocyte is substance is store excited it causesd. When a the
nematocyst to expose a filament
containing the toxic chemical.
Cnidocytes and their nematocysts have
the biological fuindividual from external aggression anctions of defending thend
of helping to capture their prey.
- How is the nervous tissue
distributed in cnidarians?
Their nervous system is diffuse, there
are no brain or ganglia.
- What are the types of
reproduction presented by
cnidarians?
They present asexreproduction. ual and sexual - What is the type of
asexual reproduction that
occurs in hydras?
Hydras reproduce asexually by budding. - What is metagenesis?
What are the other names of
this process?
Metagenesis is the which there are two dtype of life cycle iifferent forms ofn (^)
individuals ohaploid and the other diploid. In one off the same species, one (^)
these stages gametogenesis occurs and
fecundated gametes givzygote that then develops into the birth to the othere (^)
form. Metagenesis is also known as
alternation odiplobiont life cycle. (Allf generations or plants, fas (^) or
example, present metagenesis.)
- In the metagenesis of
Aurelia and Obelia what is the
form that produces gametes?
What is the form that
reproduces asexually?
In the metagenesis of some
coelenterates, like Aurelia and Obelia,
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