01:119:116 Lecture Notes - Lecture 5: Phylogenetic Tree, Gastrulation, Archenteron

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9 Apr 2016

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Body cavities: compare /contrast diploblastic and triploblastic, place major animal classes and derived characteristics on a phylogenetic tree, characteristic of animals, heterotrophs digest internally, cell structure. Lack cell walls their bodies are held together by structural proteins such as collagen: organization cell differentiation tissues organs muscle and nerve tissue, reproduction. A larva (cid:0) (cid:0) is sexually immature and morphologically distinct from the adult; it eventually undergoes metamorphosis (cid:0) (cid:0)(cid:0) (cid:0) tadpole(cid:0) (cid:0) (cid:0) (cid:0) frog. Sexual or asexual meiosis sperm & egg: development (development is regulated by gene express homeobox genes) Zygote cleavage -eight cell stage cleavage blastula blastocoel cross section of blastu- la gastrulation cross section of gastrula: evolution. A larva (cid:0) (cid:0) is sexually immature and morphologically distinct from the adult; it eventually under- goes metamorphosis (cid:0) (cid:0)(cid:0) (cid:0) tadpole(cid:0) (cid:0) (cid:0) (cid:0) frog. Characterized by body plans: differentiation of cells, tissues and organ, symmetry (sponges=asymmetry)

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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01:119:116 Lecture Notes - Lecture 5: Phylogenetic Tree, Gastrulation, Archenteron

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