Intro to Animals Flashcards
what are animals?
means to steal plastids
kleptoplasts
if you can’t what an environment, you can’t do anything about it
perceive
why do sea slugs have chloroplasts
what is the best way to organize animals
on development
is the haploid generation of animals single celled?
yes
how much bigger is an average egg cell compared to a sperm cell
10 million
two best ways to organize animals
symmetry or blast levels
why is symmetry easier
because you can see it while looking at it
what does monoblastic mean?
one germ layer
what type of symmetry does monoblastic have?
none
what is cleavage
cell division without cell growth
what is a bastula
a cell
what is gastrulation
inward migration of cells
what is the endoderm
inside layer of cell layer (gut)
diploblastic
two germ layer
endoderm
ectoderm
what is an example of a diploblastic
jellyfish
what type oof symmetry does a diploblast have?
radial
what type of germ layer do most animals have
triploblasts
mesoderm
cells on both sides of the gut (endoderm)
how does cloning work
diploid nucleus of genes that you want to duplicate is drooped into an egg
what experiment was about cloning
Dolly
transcription factors
stick to dna and promote or stop genes
bicoid
front transcription factor
nanos
back transcription factor
Hox gene
genes that turn on structured genes
how do you get multiple of the same hox gene
gene duplication
the process of transformation from an immature form to an adult form in two or more distinct stages.
metamorphosis
advantages to metamorphosis
third germ layer
mesoderm
what is a coelom
air or fluid cavity within the mesoderm
what is the coelom adaptive for?
twisting or turning
open free space for organs to go
first opening mouth develops from blastopore
protosomes
second opening anal develops from blastopore
deuterstomes
which one’s blastids are determinate, protostomes or deuterostomes
protostomes
what kind of symmetry do protostomes have?
spiral
what kind of symmetry do deuterostomes have?
radial
how does the coelom formation happen in deuterostomes
folds of archenteron form the coelom
what is the coelom called in a deuterostomes
entercoelous
how does the coelom formation happen in protostomes
solid masses of mesoderm, split to for it
what is the coelom called in a protostomes
schizocoelous
acoelomates
Animals that do not have a coelom are called
pseudocoelom
is a body cavity that lies between mesodermal and endodermal tissue and is, therefore, not completely surrounded by mesodermal tissue.