BIO 2135 Lecture Notes - Lecture 5: Cell Membrane, Double Fertilization, Fasciola Hepatica

29 views7 pages

amethystreindeer193

28 Sep 2016

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

True animals, about 2% of all animals out in the world. Triplovlastic: organisms formed from three layers: ectoderm, mesoderm, endoderm. Diploblastic: organism formed from only two primitive cell layers: endoderm and ectoderm. Eucoelomates: organism that possess a true coelom with mesoderm lining the whole body cavity, unlike pseudocoelomates where the mesoderm is adjacent to ectodermal tissue. Pseudocoelomates: body cavity that is not completely lined by mesoderm. They are the transition group and this is why the presence of mesoderm and bilateral symmetry is separate on the cladogram. Bilateral symmetry is a harbinger of the directed motion. Radial: animals that are sessile, responding to the environment in all directions around them or pelagic (floating) Bilateral: directed movement making sense that we have refined directed movement at the same time we get mesoderm and muscles that are dedicated towards the movement (ability to orient towards the environment)

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

goldcamel906

BIO 2135 Lecture Notes - Lecture 5: Cell Membrane, Double Fertilization, Fasciola Hepatica

Document Summary

Get access

Related textbook solutions

Molecular Cell Biology

Biology: Science for Life with Physiology

Biology

Concepts of Biology

Essentials of Biology

Related Documents

BIO 2135 Lecture 4: BIO2135-(4)-platyhelminthes

BIO 2135 Lecture Notes - Lecture 6: Gastrulation, Planarian, Symmetry In Biology

BIO 2135 Lecture Notes - Ventral Nerve Cord, Symmetry In Biology, Germ Layer

Related Questions