Lab 22

What is a bauplan?

The four characteristics that are important when classifying animals:

Animals without tissue vs Animals with true tissue

multicellular animals that do not have tissue and belong to the parazoa

The formation of all three tissue types makes an organism __ rather than __.

The animals in the Phyla __ are diploblastic

animals that have a true body cavity that consist of mesoderm enclosed cavities within an ectoderm/endoderm cavity

__ form from developing mesoderm, while __ develop from out pocketing of the gut

flatworms

a concentration of nerve and sensory tissue near the anterior end

a digestive tract that consists of an open sac

If you have a gastrovascular cavity, this means:

free-living flatworms

they have extraordinary regenerative powers

flukes, parasitic flatworms lacking a ciliated epidermis

tapeworms

the anterior end of the animal and is used ti attach to the intestine wall of the host

round worms

make and female individuals means a species is __

when an animal has both male and female organs

segmented worms

when an animal has true segments arranged linearly along the anterior-posterior axis

many setae (hairs)

free swimming larva stage

earthworm