Zoology Study guides, Class notes & Summaries

What animal characteristics do protozoans have? - No cell walls, eukaryotic, some are multicellular, some are heterotrophs How are protozoans able to carry out bodily functions in a single cell? - -possess organelles -some are autotrophs -possess all other animal characteristics What are two kinds of ASEXUAL reproduction that occur in protozoans? - Binary fission and schizogany (multiple fission) What is ASEXUAL reproduction in protozoans? - split off Any advantages to asexual reproducti...

Zoology Lab practical #1

How many vertebrate species are there? CORRECT ANSWER 50,000 What two things are used to examine different vertebrates? CORRECT ANSWER similarities, diversity Vertebrate CORRECT ANSWER animals with backbones (have vertebrae) Backbone CORRECT ANSWER vertebral column surrounding a spinal cord 5 General Groups of Vertebrate (Historic Classification) CORRECT ANSWER Fishes, Amphibians, Reptiles, Birds, Mammals Lower Vertebrate CORRECT ANSWER "primitive vertebrate" - fishes Higher ...

Why doesn't phylogenetic systematics have a fixed number of hierarchical categories like Linnaean systematics? CORRECT ANSWER it is variable, not for sure What aspect of evolution does phylogenetic systematics represent more clearly than Linnaean systematics does? CORRECT ANSWER Evolutionary history Non-amniotes CORRECT ANSWER lay eggs in water Hagfishes and lampreys: CORRECT ANSWER Myxiniformes and Petromyzontiformes (Agnathans) Sharks, rays, and ratfishes, cartilaginous fishes: CO...

Basics of diffusion, gradients, and how they relate - Diffusion: spontaneous movement of very small things. It requires no energy investment by the organism (other than keeping the temperature above freezing) --direction is random Gradients: top of gradient = high concentration, bottom of gradient = low concentration --diffuses high to low Basics of diffusion across a semipermeable barrier - Factors that speed up or slow down diffusion - size: smaller things diffuse faster the visco...

Amniotic Egg CORRECT ANSWER A shelled, water-retaining egg that enables reptiles, birds, and egg-laying mammals to complete their life cycles on dry land Fenestration CORRECT ANSWER The introduction of fenestrae (small holes in glomerular capillary walls that filter out fluid) in some amniotes Amniota CORRECT ANSWER higher vertebrates (reptiles, birds and mammals) possessing an amnion during development Basilisk Lizard CORRECT ANSWER An Amniota species that has the ability to run across...

Solutions Manual For Zoology 10th Edition by Stephen Miller , John Harley 7273, 4.

3 germ layers - ectoderm, MESODERM, endoderm What does the mesoderm form? - True muscle tissue Acoelomate - no body cavity coelomate (eucoelomate) - True body cavity completely surrounded by mesoderm Pseudocoelomate - false body cavity symmetry of platyhelminthes - bilateral symmetry (first appearance) Platyhelminthes nervous system - -Anterior cerebral ganglion and nerve cords -Eyespots Platyhelminthes osmoregulation - Flame cells Simple diffusion Flame cells - In flatworms, specializ...

ZOOLOGY- Reproductive System Questions And Answers A+ Review Asexual reproduction - Correct Answer->without sexual interaction. Absence of fertilization Sexual reproduction - Correct Answer->A reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents Internal Fertilization - Correct Answer->transfer sperm from male to female by a special structure External fertilization - Correct Answer->releas...

Phylum Porifera - name classes (taxonomy) - ANSWER-Demospongia, Calcarea, Hexactinellida, (Homoscleromorpha) Key characteristics (overall): Life cycle/reproduction - ANSWER--monoecious - asexual (by budding / gemmules) - sexual (eggs / sperm) free-swimming flagellated larvae Key characteristics (overall): Anatomy - ANSWER--asconoid (basic) : -Syconoid -lueconoid (complex) Key characteristics (overall): Basic Body plan - ANSWER-- Tissue: no true tissue (incipient) - symmetry: none - gu...