Annelids and Mollusks Flashcards

Flashcards on Annelids and Mollusks

Pogonophorans

Annelids that live around deep sea hydrothermal vents.

Chemolithotrophy

Producing sugars from carbon dioxide, using high-energy minerals to power anaerobic respiration.

Annelids at Hydrothermal Vents

Marine worms that are more than six feet tall and have secondarily lost their digestive tract.

Annelids

Worms that must have symbionts living inside them, and their highly vascularized surface is full of chemolithotropic bacteria.

Highly vascularized surface of Annelids

A structure full of bacteria that can make sugar using high-energy minerals.

Being terrestrial

The most recent characteristic to evolve within Annelids.

Gastropods

The one group of mollusks that has some animals that live on land.

Gastropods

Snails and slugs.

Three-Part Body Plan

A feature of all mollusks with a foot, mantle, and visceral mass.

Foot

Muscular organ that does locomotion for mollusks.

Mantle

Covers the top of mollusks.

Visceral Mass

Everything between the foot and the mantle containing all the internal organs of the animal.

Mantle

Secretes the shell of mollusks.

Open Circulatory System

Circulatory system where the circulatory fluid is not contained in tubes, and organs are directly bathed in the circulatory fluid.

Major Groups of Mollusks

Chitons, gastropods, bivalves, and cephalopods.

Chiton

An animal that lives in the intertidal zone and can clamp its body really hard to a rock for protection.

Snails and slugs

Gastropods include.

Nudibranchs

Marine slugs with sensory antennae and a brachial plume used for gas exchange.

Bivalves

Have a hinged two-part shell.

Siphon

It's a straw-like structure that can draw water in from the environment and then squirt the water back out, seen in bivalves.

Cephalopods

Squids, octopuses, and nautiluses.

Jet Propulsion

How squids and nautiluses primarily move themselves around.

Eye structure in squids

The hard lens works a lot more like a microscope where the lens is raised and lowered to focus.

Ectisozoans

Includes animals like the insects and is our most numerous group of animals.

Exoskeleton of Ectisozoans

Supports the mass of their body and keeps them from drying out.

Ectysis

Molting.

Cuticle

A covering around the animal and the synapomorphine of the ex isosomes is that all of them have a cuticle

Ectisozoans

Animals that make a cuticle that must be periodically shed in order for the animal to get larger in size.

Arthropods

The cuticle will become strengthened with chitin and then this will be the cuticle exoskeleton.

The preapulids, the kynorhynx, and the lorisophyllis cuticle

They have, with these three, we have a very, very very thin and unsupportive cuticle

Nematodes

Most numerous animals on earth in terms of number of individuals.

C elegans

Beloved, animal in terms of cell biology studies

Trichinosis

They have a parasite parasite infection that people get usually, when humans get it, it's usually from eating undercooked pork products

Eleventysis

In this case, like, instead of rats moving it around, it's it's usually mosquitoes

Horsehair worms

These are worms sister to nematodes, and they have a really similar body to nematodes

Adult Definition

Adult means the form that makes the the the eggs and sperm.

Important synapomorphine on the clay

They have paired appendages

Appendages

That is structures that come out of the animal's body, and those appendages are gonna do all kinds of things

Tardigrades

These are sometimes called moss piglets or water bears, live on moss, that's where they get their name, to very, very, very high density, and they're very, very small

Velvet Worms

These has chitin in their cuticle.

Arthropods

That cilia has not just a little bit of chitin, but a ton of chitin in the cuticle.

Main Group of Arthropods

Two main groups of arthropods, and these two groups can be separated based on their mouth parts

The chelicerates

If you have fangs, then you're in this group

Chelicera

Latin work for fang

Mandibulates

If you have jaws.