Quiz 25-26 Flashcards Preview

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Flashcards in Quiz 25-26 Deck (25):
1

crayfish symettry

bilateral

2

crayfish supportive structures

exoskeleton-prtects soft body parts

3

crayfish phylum arthropoda/crustacea/

malocostrada

4

sea stars, urchins, cucumbers

phylum echinodermata

5

phylum cordata: 4 characteristics

dorsal nerve cord, notochord, pharyngeal gill slits, post-anal tail

6

horseshoe crabs, spiders, scorpions, lobsters, crayfish, barnacles, centipedes, insects

phylum arthropoda

7

tunicates, lancelets, lampreys, sharks, frog, turtles, snakes, birds, mammals

phylum chordata

8

stages in early animal development-GFCGNO

Gametogenesis
Fertilization
Cleavage (form of blastula)
Gastrulation
Neuralation
Organogenesis

9

gametogensis

production of haploid gametes

10

fertilization

male and female gametes unite and produce diploid zygote

11

holoblastic cleavage

through entire egg, isolecithal

12

meroblastic cleavage

in one area, telolecithal

13

blastulation

zygote undergoes cleavage to form blastula

14

isolecithal eggs have ____ cleavage (sea star)

holoblastic

15

telolethical eggs have ___ cleavage (chicken)

meroblastic

16

gastrulation

cells migrate to form tissue layers

17

neuralation

formation of nervous system in chordates

18

organogensis

development of organs from primary germ layers

19

sea stars have ____ cleavage

holoblastic-whole thing-isolethical

20

which germ layer gives rise to neural tube

ectoderm

21

chickens have ___ cleavage

meroblastic-telolethical

22

taxis

movement toward or away stimulus

23

kinesis

random movement in response to stimulus

24

is kinesis observed in brine shrimp?

no

25

rate of movement changes

kinesis