What does it mean to have an open circulatory system in comparison to a closed circulatory system?
An open circulatory system is a blood circulation system in which blood moves through vessels and into open spaces around the body organs. A closed circulatory system is a blood circulation system in which blood moves through the body through closed vessels.
What are the three classes of mollusks? Name some examples
the three classes of mollusks are gastropods (snail and slugs); bivalves (clams and other two-shelled fish); and cephalopod (squid and octopi)
What are the three classes of annelid worms?
The three classes of annelid worms are leeches, polychaetes, and earthworms
What percent of invertebrates are arthropods?
What type of symmetry do adult echinoderms have? What type of symmetry do baby echinoderms have?
Adult echinoderms have radula symmetry. Baby echinoderms have bilateral symmetry
How many body parts do insects have? What is the name of each body part? What can be found on each body part?
Insects have three body regions: a head, a thorax, and an abdomen. The head consists of a pair of antennae used for touch and smell; eyes (simple or compound); and a mouth. The thorax consists of three pairs of legs and one or two pairs of wings. The abdomen is where the reproductive structures are found along with the spiracles.
How many body parts do spiders have? What is the name of each body part? What can be found on each body part?
Spiders have 2 body regions: a cephalothorax and an abdomen. The cephalothorax consists of the eyes;, the mouth, and the antennae.
What body part is used to classify a mollusk?
What are an insect's spiracles?
The spiracles are the openings in the abdomen and thorax of insects through which air enters and waste gases leave.
How are worms and mollusks alike?
Worms and mollusks both have bilateral symmetry, they are made up of many segments and they both reproduce sexually.
What are setae?
Setae are bristle-like structures on the outsides of each body segment that helps segmented worms move.
describe characteristics of a millipede.
Millipedes have a million legs (4 legs per segment) and feed on plants and decaying material and often are found under damp plant material.
Describe characteristics of a centipede.
Centipedes have a hundred legs (2 legs per segment). They hunt for their prey which includes snails, slugs, and worms. They have a pair of venomous claws hat are used to inject venom into the prey. Their pinches are painful to humans but aren't fatal.
Worms have ________________ symmetry. Arthropods have ______________ symmetry.
Define regeneration. Discuss what type of animal we have studied that does this.
when an organism grows new body parts to replace lost or damaged ones. Brittle stars undergo regeneration.
What does an echinoderm use to move?
it uses it's tube feet
What are arthropod's hard outer-covering called?
What type of animal has appendages?
What type of animal am I describing: Tube feet are used to open the shell; a stomach then leaves the mouth of this animal and pushes it into the shells opening. The stomach secretes juices that turn the food into a soapy mixture that is absorbed by the stomach.
A sea star is being described because they have tube feet and they do this when it eats.