Final Exam - Animals 2024 Flashcards
What organelles do animals have?
Cell membrane
Mitochondria
Nucleus
What organisms did animals evolve from?
Protozoans
What type of organism develops the anus as its first opening?
Deuterostome
What type of circulatory system do arthropods and mollucks have?
An open Circulatory system
What does the Coelom or body cavity allow for?
Our body to have a place to store organs
What structure in vertebrates does the Dorsal Nerve Cord become?
spinal cord
In biological terms when does new life begin?
After fertilization
What are humans example of?
Deutersotome
What kind of symmetry do cnidarians have?
Radial symmetry
What are animals?
Heterotrophs - because they get energy by eating other living things
How do pseudocoelomates digest food?
By wiggling their bodies until it goes through the digestive tract
What body segment contains most of the internal organs of arthropods?
Abdomen
What will almost all animals do?
Reproduce with a male and female
What organ is used to catch food in filter feeding mollucks?
Gills
Do all animals move at some point in their life?
YES
What kind of skeleton do humans have?
Endoskeleton
Why is segmentation important in animals ?
It allows for flexibility
What structure in a mollusks acts like a combination of a tooth and a tongue and is used to scrape up food?
Radula
What do we call an animal that does not have a body cavity at all?
Acoelomate
What do sponges use to reproduce?
Fragmentation
Through spores
Sexual Reproduction
What is the name of cells that are used to sting?
Cnidocyte
What body segment contains the brain and senses of arthropods?
Head
What organ is used for movement in mollusks?
Foot
The crop and gizzard in many earthworms has the same function as what structure in humans?
The stomach and teeth
What kind of fish has a notochord but no real skeleton or backbone?
Jawless fish
What can birds also be considered?
Feathered Dinosaurs
What types of mammals give birth to very premature young - who latch onto a mother after birth?
Marsupial mammals
What type of mammals lay eggs?
Monotremes
What do the pharyngeal gill slits become in adult humans?
Structures around the throat like the tonsils and thymus glands
What does the term - Tetrapod mean?
Four-limbs
What is the last fish to evolve?
Bony Fish
