3. • Hermaphrodites
• Aquatic animals, which are mostly located in the sea.
• Main Characteristics is having many holes (pores) in the
body and forming a channel system.
• Have two forms,they are polyps and sessile.
• Having exoskeleton,which consists of elastic fibers
(spongin) and spines (spicules).
• Have no body organs and limbs.
• Reproduction is by forming buds(vegetative) and forming
sperm and ovum(generative).
4.
5. This simplest sponge type has it’s choanocytes located in it’s
spongocoel. Note buds (asexual reproduction) and many oscula (plural
of osculum) on this slide.
6. A
a longitudinal & cross-sectional view. Note the osculum (A), spongocoel,
radial canals & the choanocytes lining the radial canals. A magnified view
of a radial canal showing individual choanocytes is included. [fig 1.4]
7. This is a close-up of a cross-section through the radial canals of a
syconoid-type sponge. Note the radial canals, the choanocytes lining
canals, & osculum.
8. These are examples of the most complex sponge type. The choanocytes
are located in the many flagellated chambers. Any large sponge is most
likely a leuconoid- type sponge.
9. What is hermaphrodite?
How the reproduction?
Where’s habitat/live of sponge?
10. Hermaphrodite is a living things that having 2 sex
there are male and female.
The reproduction is asexually and sexually.Asexual
reproduction occurs by budding and gemmule
formation. Gemmule called internal shoots. Gemmule
generated ahead of the winter in the body sponges that
live in fresh water. Sexually by fusion of sperm with the
ovum, fertilization occurs outside the body sponges.
Sponge is live in temperate regions for at most a few
years, but some tropical species and perhaps some
deep-ocean ones live for 200 years or more.
