Key Characteristics of Animalia (subphylum Verterbrata)
- Segmented spinal column
- Spinal cord
- Cranial cavity
- Bilaterally symmetrical structure
- Extrinsic eye muscles attached to eyeball and eye socket.
- Members of phylum Chordata
Examples:
Class Agnatha (jawless fish)
- Lack jaws
- Ectothermic (cold-blooded)
Class Chondrichthyes (cartilaginous fishes)
-Cartilaginous skeletons
-Two chambered hearts
Class Osteichthyes (bony fishes)
-Bone skeletons
-Mostly ectothermic
Class Amphibia (amphibians)
-Ectothermic
-Metamorphose from juvenile water-breathing to adult air-breathing.
Class Reptilia (reptiles)
-Ectothermic
-Scaled skin
Class Aves (birds)
-Endothermic
-Lay shelled eggs
-Outer covering of feathers
Class Mammalia (mammals)
-Endothermic
-Outer covering of hair
-Give birth to live young
source: http://tolweb.org/Vertebrata
By Jonan, Victor, Si Yuan
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ReplyDeleteLearnt: I have learnt some key characteristics of some classes of the Animalia Kingdom.
ReplyDeleteDiscovered: I have discovered much more classes of Animalia Kingdom, like Chordata, Xenoturbellida and Tardigrada.
I learnt that vertebrates have cranial cavity.
ReplyDeleteI discovered that there are many invertebrates that have not been discovered yet.
I have learnt that for vertebrate, extrinsic eye muscles attached to eyeball and eye socket.
ReplyDeleteI have discovered that the spinal cord and spinal column are are 2 different things entirely. The spinal cord is made up of nerves and the spinal column are the vertebral bones that protect the spinal cord.
I have learnt that vertebrates are members of phylum Chordata.
ReplyDeleteI have discovered that extant vertebrates range in size from the carp species Paedocypris, at as little as 7.9 mm (0.3 inch), to the Blue Whale, at up to 33 m (110 ft).
1) I have learnt vertebrates have a bilaterally symmetrical structure.
ReplyDelete2) I have discovered that fish are the only vertebrates that outnumber birds.
Plantae
I learnt that cartilaginous fishes have two chambered hearts. I discovered that vertebrates are bigger underwater, like the blue whale is the largest mammal (30m) , the Prionosuchus was the largest amphibian (9m) and the Leedichthys was the largest fish (up to 27m).
ReplyDeleteI have learnt that vertebrates have two chambered hearts and have extrinsic eye muscles attached to eyeball and eye socket.
ReplyDeleteI have discovered that half of the living vertebrates are fish
1. I have learnt that vertebrates have a segmented spinal column, spinal column, bilaterally symmetrical structure and a cranial cavity.
ReplyDelete2. I have discovered that vertebrates make up 5% of all described animal species, and they range from 7.9mm (Paedocrypis) to 33m (Blue Whale).
I have learnt that animals have extrinsic eye muscles attached to eyeball and eye socket.
ReplyDeleteI have discovered that vertebratespostanal tail at least during embryonic development.