Vertabrates Flashcards
(43 cards)
Sea Stars, Sea Urchins, Sand Dollars, etc.
Echinoderms
_________ can regenerate after injury or loss of part of their body; fragmentation,
asexual reproduction
Echinoderms
All species in this group are marine
Echinoderms
early larval stages have bilateral symmetry, adults have pentaradial symmetry
Echinoderms
endoskeleton under the skin
composed of calcareous ossicles
Echinoderms
coelom partially modified into water vascular system
Echinoderms
All species in this group are marine and some can inject toxins
Echinoderms
a flexible, rod-shaped support structure
notochord
derived from ectoderm that in most species develops into the brain and spinal cord
dorsal hollow nerve cord
DHNC
pharyngeal slit and post-anal tail
2 other key features that Chordata have
earliest terrestrial tetrapods
Amphibians
__________ have four well developed limbs, are carnivores, and require water for reproduction
Amphibians
__________ have moist, permeable skin with mucus glands that allows cutaneous respiration
Amphibians
____________ do external fertilization
Amphibians
__________ have scales that cover their skin that prevent water loss, and do internal fertilization
Reptiles
Birds are _____________ which means that they generate their own body heat metabolically
Endothermic
____________ are modified reptilian scales
Feathers
___________ have skin that is covered by hair or fur
Mammals
______________ have glands including mammary glands
Mammals
____________ have an ancestory called the cynodont reptile
Mammals
early _________ and small nocturnal insectivores are called Morganucdonts
Mammals
- monotremes– egg-laying platypus & echidnas,
- marsupials
-placental mammals
3 rounds of radiation & extinction
the largest existing land animals
Elephants
3 species of Elepants living in sub-Saharan Africa, South Asia, and Southeast Asia
- African bush elephant
- the African forest elephant
- the Asian elephant