BIO 200 Lecture 3: Class Notes23

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harlequingoose990

28 Nov 2017

School

University at Buffalo

Department

Biological Sciences

Course

BIO 200

Professor

Dr.Poulin

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Document Summary

Radial symmetry - spherical or circular organisms - divide in multiple two dimensional planes - basal for animal tree. Bilateral symmetry - cephalization (head forming) - single plane of symmetry - top (dorsal) and bottom (ventral) - different functions in different parts of body. Sponges have undifferentiated tissues - all diploblastic animals have two layers (ectoderm and endoderm) Most animals have three layers of embryonic tissue - ectoderm (outer body), mesoderm (skeleton muscle), endoderm (digestive organs intestines) Tissues allow for increased specialization - allows for more functions. Protostome mouths develop before their anuses - first mouth. Deuterostome anuses develop before their mouths - second mouth. Body cavity (coelom) influences movement (look at slide for the names and stuff) Segments allow for redundancy of function and specialization. Comb jellies have many traits that are homoplasious with the more diverged animals. Highly specialized cells - mature sponge is lined with small cells called choanocytes - flagella - brings in food and oxygen.

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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BIO 200 Lecture 3: Class Notes23

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