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51 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Blastula
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Consist of a single layer of cells surrounding a hollow cavity
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Single layer of cells
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Gastrula
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Side of the blastula fold inward forming an embryonic stage
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Larva
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Immature form of an animal that looks different from the adult form and usually eats different food
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Metamorphosis
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Larvae undergoes a change of body form this is when it becomes an adult
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Invertebrates
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Animals without backbones
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Vertebrates
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Animals with backbones
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Sponges
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Animals that lack true tissues and organs
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amoebocytes- sponges
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cells that pick up food from collar cells digest it and carry the nutrients to other cells they wandered through the jelly-like material
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collar cells
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Cells with flagella
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sessile-sponges
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Adult sponges that are anchored in place they can't move
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Cnidarians
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Hydra,all cnidarian share radial symmetry and tentacles with stinging cells
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Radial symmetry-cnidarians
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Has body parts arranged like pieces of a pie around an imaginary central axis
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Cnidarians-CNIDOCYTES
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Stinging cells especially abundant along the tentacles,a stinging capsule is located within each cnidocyte
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Nematocyst- cnidarians
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Contains a fine coil tubule that often has a poisonous barb at the end
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Gastrovascular cavity- cnidarians
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Digestive sac that the mouth leads to, food enters through the mouth and is digested in the cavity undigested food in other waste exit back through the mouth
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Polyp -cnidarians
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Cylindrical body shape with tentacles radiating from one end. Animals with a polyp body form are mostly sessile. Hydras are an example
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Medusa- cnidarians
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Umbrella shaped body form with fringes of tentacles around the lower edge jellies are an example
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Flatworms
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Mostly small leaf like or ribbon like worms
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Bilateral symmetry flatworms
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Mirror image right and left
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Roundworms
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Nematoads phylum Nematoda are small cylindrical worms with somewhat pointed heads and tapered tails
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Complete digestive tract- roundworms
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Has two openings a mouth and anus at opposite ends of continuous tubes
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rotifers
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= tiny animals
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Annelids
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Earth worms and segmented worms phylum Annelida
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Closed circulatory system
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Blood remains in vessels
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acoelomates -annelids
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Animals that lack a body cavity
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Pseudo coelom -annelids
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Fluid filled body cavity in direct contact with the digestive tract
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Coelom
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Fluid filled cavity that is completely lined by tissue that originated in embryo from mesoderm tissue not in contact with digestive system
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Mollusk
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Have muscular mass of tissue called a foot and a multi-functional structure called the mantle
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cnidaria facts
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radial symmetry
tentacles with stringing cells lack head slow moving sessile gastrovascular cavity gastrula stage epidermis with high function polyp and medusa 3 classes -hydroza -scyphoza=jellies -anthozoa= sea anemones |
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playhelminthes(flat worms)
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bilateral symmety
simplest to have three tissue layers -ectoderm -mesoderm -endoderm gastrovascular cavity one mouth eyespots detect light aceolomates three classes turbellaria- panarians trematoda-flukes.. parasites cestoidea tapeworms |
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Mantle
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Outgrowth of the body surface that drapes over the animal
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Mantle cavity
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Houses a Gil in aquatic snails and many other mollusk
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Radula
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Unique scraping organ
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Open circulatory system
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Blood flows over organs
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Gastropods
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Make up the largest group of mollusks most have a single shell that is often spiral shaped live in fresh water salt water and terrestrial environments
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Bivalves
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Wasters clams mussels and scallops have hinge shells divided into two halves called valves
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Cephalopods in mollusks
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Squids and octopus
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enchinoderms
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Black body segments and in most of all forms the external parts of the animal radiate from the center like spokes of a wheel example starfish
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Endoskeleton
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The spines and plates are actually part of a hard internal skeleton
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Water vascular system
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Network of water filled canals
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Tube feet
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Structures that branch off from the water vascular system function and locomotion feeding and respiration which is gas exchange with environment
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protostomes
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Coelom forms from solid masses of cell in the embryo
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deuterostomes
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Coelom forms from a portion of the digestive tube of the early embryo
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Porifera facts
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Sponges
Reproduce asexually by budding, male and female structures are present in the same individual, digesting circulation excretion and gas exchange are accomplished by multipurpose amoebocytes |
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Cnidarian facts
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Examples are hydras jellies and anemones, reproduce by budding and both male and female structures in same individual, digestion in gastrovascular cavity.
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Platyhelminthes facts
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Example flat worms
Reproduce asexually by fragmentation and regeneration sexually by both male and female individual in same organism. gastrovascular cavity |
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Nematoda facts
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Roundworms example. Exoskeleton called a cuticle. Reproduce sexually separate male and female.
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annalida facts
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Example segmented worms. Reproduce sexually male and female structures in same. Complete digestive tract
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Mollusca
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Snails clams squids. Mantle produces a shell. Sexually reproduce same parts in one organism. Complete digestive tract
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Arthro poda
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Insects crustaceans spiders. exoskeleton of protein and chitin. Separate male and female sexual reproduction.
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enchinodermata
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See stars sea urchin sea cucumbers. Endoskeleton of hard plates .water vascular system. Reproduce sexually separate males and females. Short digestive tract with mouth and anus
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