Vertebrates
What is bipedalism?
When a being walks on its two back or bottoms limbs
Which group of animals do NOT have a backbone?
invertebrates
These simple animals are full of holes and filter feed in the ocean
Porifera
These worms are round, unsegmented, and can sometimes be parasites.
Nematodes
What is an opposable thumb?
An opposable thumb is a thumb that can be moved to touch the fingertips of the same hand, allowing for a wide range of grasping and manipulation abilities.
This group of vertebrates is known for living both in water and on land
amphibians
What is the largest group of invertebrates, with insects, arachnids, and crustaceans.
Arthropods
This group includes snails, octopuses, and squids
Mollusks
earthworms and leeches are both....
annelids
How many shells do bivalves have?
Two
Unlike other vertebrates, fish use this organ to extract oxygen from water
gills
Instead of a skeleton, many invertebrates have this protective outer layer
Exoskeleton
What are spicules?
small, needle-like structures
What does regenerate mean?
Grow back after being lost or damaged
Our brains are 1.______ developed. This allows us to use 2.________ language and has increased our ability to communicate with each other.
1. highly
2. complex
All mammals share these two key characteristics
hair/fur and producing milk for their young
What does it mean to be an ectotherm?
This means their body temperature depends on the external temperature
What are the 3 types of molluscs?
Bivalves, Gastropods, Cephalopods
What are the two groups of platyhelminthes?
Tapeworms and Planarians
What animals have a head, thorax, abdomen?
Insect
What is a backbone?
row of small bones down the middle of an animals back
What are the 8 groups of invertebrates
Porifera, Cnidarians, Platyhelminthes, Nematodes, Annelids, Molluscs, Arthropods, Echinoderms
What is fragmentation?
when part of the organism breaks apart from its parent and grows into a separate genetically identical individual
If a worm is not a parasite, it is ....
free-living
What are cephalopods?
Marine animals which have tentacles attached to their heads