Biology Questions and Answers
- What is the economic
importance of sponges?
Some chemical substances secreted by
sponges havantibiotic and anti-tumoral activitiese anti-inflammatory, (^) and
they are used in the production of
medicines. Siendoskeleton of some nce anciesponges has hadnt times the (^)
commercial value, they are used as
cleansing imsponges), to wash plements for baths (animals, objects andbath (^)
so on.
- Sponge identity card. How
are sponges characterized
according to example of
representing beings, basic
morphology, type of
symmetry, embryonic (germ)
layers and coelom, digestive
system, respiratory system,
circulatory system, excretory
system, nervous system and
types of reproduction?
Example sponges. Basicof representing beings: morphology: tubular (^) or
globular body with spongocoel, sessile;
choanocytes, piamoebocytes. Type of symmetry: notnacocytes and (^)
established. Germ layers and coelom:
do not apply since phave true tissue organization. Dioriferans do notgestive (^)
system: nonexistent. Respiratory
system: nsystem: nonexistent.onexistent. Circulatory Excretory system: (^)
nonexistent. Nervous system:
nonexistent.asexual and sexual with Types of reproduction:larval stage.
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