BIOL 2030 Chapter Notes - Chapter 8: Microstructure, Parthenogenesis, Limnognathia

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mauveox391

28 Sep 2013

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Are worms and (most) have bilateral symmetry and are triploblastic animals. Have acoelomate bodies (lack coelom) and have mesoderm. Have only one internal space (digestive cavity) Parenchyma is the region between the epidermis and the digestive cavity lining. a pseudocoelomate has an internal cavity (pseudocoelom), surrounding the gut, but the cavity is not lined with mesoderm (unlike coelomate animal) Have a distinct anteroposterior axis lack true brain. Clade platyzoa: are a part of lophotrochozoan protosome phyla. Phylum platyhelminthes there are four classes: turbellaria (nonparasitic), trematoda, monogenea, and cestoda (all parasitic) turbellarians have ciliated body ( cellular epidermis with rhabdites) while the parasitic classes have nonciliatd bodies (called syncytial tegument). The parasitic class have a body has a tegument. Have a mouth, pharynx, and intestine (intracellular digestion) Have auricles (earlike lobes), statocysts (balancing organ), rheoreceptors (sensing water current) excretory system comprises two lateral canals with braches bearing flame cells and ocelli (light sensitive eyespot)

Related Questions

1)Mushrooms and other fungi were once lumped in with the plant kingdom. Modern science has separated them into their own kingdom. Kingdom Fungi is distinguished from Kingdom Plantae by the fact that unlike plants fungi.

A)grow a haploid multicellular form from a haploid spore

B)have no cell walls

C)grow, rather than locomote, toward resources

D)are absorptive heterotrophs.

E)have no haploid multicellular stage

2)Members of the Kingdom Fungi are easily distinguished from the Kingdom Plantae because the Fungi

A)Do not have photosynthtic pigments.

B)Are mostly not adapted for living on land

C)Do not have cell walls

D)are primarily unicellular

E)All the above

3)Which of the following would NOT be part of a lichen?

A)chlorophytes

B) zygosporangia

C) basidiocarps

D)Soredia

E)Asci

4)The process of metamorphosis transforms a ______ into a ______________.

A)larva; sexually mature adult

B) blastopore;mouth

C)pseudocoelom; true coelom

D)zygote;blastula

E)blastula;gastrula

5)Which of the following tissues or structures could NOT be derived from ectoderm?

A) all but the digestive tract of a jellyfsh

B) all thin skin of a platyhelminth

C)the brain of a squid

D) the muscles of a nematode

E)your epidermis

6)Which of the following is NOT a characteristic of the phylum Platyhelminthes?

A) true mesodermal tissue

B) cephalization involving concentration of nerve ganglia

C) gas and water exchange is across the thin body wall

D) free living and parasitic form

E) segmentation

7)A triploblastic animal in which the fluid?filled body cavity is only partially lined (lined on one side) with mesodermal tissue is referred to as:

A)coelomate

B)deuterostome

C)acoelomate

D)protostome

E)pseudocoelomate

8)Which of the following groups are diploblastic animals?

A)corals

B) sponges

C) comb jellies

D) a and b

E) a and c

9)Animals that actively move in a unidirectional fashion through their environment would be expected to exhibit which of the following characteristics?

A) bilateral symmetry

B) sponges

C) comb jellies

D) a and b

E) a and c

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BIOL 2030 Chapter Notes - Chapter 8: Microstructure, Parthenogenesis, Limnognathia

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