CHAPTER 12 STUDY GUIDE
... 15. Eutely is a constant number of cells or nuclei per species, a property in several groups. B. Biological Contributions 1. The pseudocoelom may be filled with fluid or gelatinous material with mesenchyme cells. 2. It generally provides greater freedom of movement. 3. There is space for more develo ...
... 15. Eutely is a constant number of cells or nuclei per species, a property in several groups. B. Biological Contributions 1. The pseudocoelom may be filled with fluid or gelatinous material with mesenchyme cells. 2. It generally provides greater freedom of movement. 3. There is space for more develo ...
The Triploblasitc, Acoelomate Body Plan
... excretion of metabolic wastes. Flame cells are ciliated and induce currents to push fluids through tubules. ...
... excretion of metabolic wastes. Flame cells are ciliated and induce currents to push fluids through tubules. ...
Digestion in Animals – Part 1
... Tapeworms – the ultimate parasite – Scolex – head with hooks and suckers the only highly developed system is its reproductive system – hermaphroditic ...
... Tapeworms – the ultimate parasite – Scolex – head with hooks and suckers the only highly developed system is its reproductive system – hermaphroditic ...
Bell Pettigrew Museum of Natural History - synergy
... discovered in 1900 from deep-water trawls off the coast of Indonesia. Early, incomplete specimens suggested that they were related to lophophorate and deuterostome groups. However analysis of the first complete specimens, collected in 1964, revealed a segmented, chaetae-bearing holdfast region, whic ...
... discovered in 1900 from deep-water trawls off the coast of Indonesia. Early, incomplete specimens suggested that they were related to lophophorate and deuterostome groups. However analysis of the first complete specimens, collected in 1964, revealed a segmented, chaetae-bearing holdfast region, whic ...
Soil Ecology Worksheet
... What are the benefits of maintaining a diverse and active soil food web in agricultural systems? Practically how do you do this? ...
... What are the benefits of maintaining a diverse and active soil food web in agricultural systems? Practically how do you do this? ...
Invertebrate Evolution
... ■ Respiratory organs have large surface areas that are in contact with the air or water. ■ For diffusion to occur, the respiratory surface must be moist ■ Many simple aquatic animals respire through their skin. ...
... ■ Respiratory organs have large surface areas that are in contact with the air or water. ■ For diffusion to occur, the respiratory surface must be moist ■ Many simple aquatic animals respire through their skin. ...
free-living worms
... Have simple nervous systems consisting of several ganglia (group of neurons). Nerves extend from head along sides of body. Nerves transmit information and control movement. ...
... Have simple nervous systems consisting of several ganglia (group of neurons). Nerves extend from head along sides of body. Nerves transmit information and control movement. ...
Invertebrate unit
... 3. Bilateral symmetry 4. Tube within a tube structure-mouth and anus 5. 3 germ layers w/ pseudocoelom 6. Smaller than flatworms, taper at both ends ...
... 3. Bilateral symmetry 4. Tube within a tube structure-mouth and anus 5. 3 germ layers w/ pseudocoelom 6. Smaller than flatworms, taper at both ends ...
Mollusca - WordPress.com
... species, primitive lung in the mantle of terrestrial species Excretory system: Contain Nephridia, which filter wastes from the coelom and excrete out the mantle ...
... species, primitive lung in the mantle of terrestrial species Excretory system: Contain Nephridia, which filter wastes from the coelom and excrete out the mantle ...
Arthropods
... segmented appendages muscles attach to inside of skeleton and act as a lever system some have wings ...
... segmented appendages muscles attach to inside of skeleton and act as a lever system some have wings ...
Earthworm Fact Sheet (2016)
... carbon. Soil organisms decompose dead plant material and carbon is respired back to the atmosphere as carbon dioxide or methane, depending on the availability of oxygen in the soil. Some carbon compounds easily digested by soil organisms are considered less stable forms of soil carbon which may be r ...
... carbon. Soil organisms decompose dead plant material and carbon is respired back to the atmosphere as carbon dioxide or methane, depending on the availability of oxygen in the soil. Some carbon compounds easily digested by soil organisms are considered less stable forms of soil carbon which may be r ...
Animal Notes
... communicate by pheromones (chemical signals); can lie dormant for a long period of time during unsuitable environment. 5. Nervous system - compound eyes; brain and ganglia that act as nerve control for each body segment; sensory organschemical receptors, simple or compound eyes 6. Respiration – If ...
... communicate by pheromones (chemical signals); can lie dormant for a long period of time during unsuitable environment. 5. Nervous system - compound eyes; brain and ganglia that act as nerve control for each body segment; sensory organschemical receptors, simple or compound eyes 6. Respiration – If ...
Platyhelminthes & Nematoda
... underside of flatworm and sucks food into the gastrovascular cavity. ...
... underside of flatworm and sucks food into the gastrovascular cavity. ...
TEST #1 CH`s 4, 5, 10 FRQ`s
... D) Identify one biome that is characterized by soil that is rich in humus. Describe how humus originated in the soils of this biome and 2 ways that humus improves soil conditions for plant growth? FRQ 2. Suppose you are an ecologist for the US Fish and Wildlife Service (USFWS). Your current research ...
... D) Identify one biome that is characterized by soil that is rich in humus. Describe how humus originated in the soils of this biome and 2 ways that humus improves soil conditions for plant growth? FRQ 2. Suppose you are an ecologist for the US Fish and Wildlife Service (USFWS). Your current research ...
Skeletal Digestive
... exhaling versus the process of taking glucose and O2 and converting it to ATP. ...
... exhaling versus the process of taking glucose and O2 and converting it to ATP. ...
SYSTEM FUNCTIONS MAIN ORGANS Skeletal Muscular Digestive
... Stomach Esophagus Large intestine Small intestine Gall bladder Fill in the blank using the words provided. Bile Absorbed Gall bladder ...
... Stomach Esophagus Large intestine Small intestine Gall bladder Fill in the blank using the words provided. Bile Absorbed Gall bladder ...
Who Am I?
... 4.________________ We are two spongy, saclike respiratory organs that remove carbon dioxide from the blood and provide it with oxygen. We occupy the chest along with the heart. Who are we? Nervous System: 1.________________I am a long tube-like structure extending from the base of the brain through ...
... 4.________________ We are two spongy, saclike respiratory organs that remove carbon dioxide from the blood and provide it with oxygen. We occupy the chest along with the heart. Who are we? Nervous System: 1.________________I am a long tube-like structure extending from the base of the brain through ...
Diapositiva 1
... a. Parapodia are paddle-like appendages used in swimming and for respiration. b. Setae are bristles, attached to parapodia, that help anchor polychaetes or help them move. 3. Clam worms such as Nereis are active predators. ...
... a. Parapodia are paddle-like appendages used in swimming and for respiration. b. Setae are bristles, attached to parapodia, that help anchor polychaetes or help them move. 3. Clam worms such as Nereis are active predators. ...
Annelids, Arthropods, and Echinoderms
... the class Hirudinea are parasitic worms. Reproduction occurs through an exchange of sperm packets ...
... the class Hirudinea are parasitic worms. Reproduction occurs through an exchange of sperm packets ...
Document
... • Marine, freshwater, or terrestrial. • Triploblastic, [probably] coelomate, bilaterally symmetrical un-segmented worms. • Complete digestive tract with anus. • Protonephridia. • Unique proboscis apparatus. • Closed circulatory system. ...
... • Marine, freshwater, or terrestrial. • Triploblastic, [probably] coelomate, bilaterally symmetrical un-segmented worms. • Complete digestive tract with anus. • Protonephridia. • Unique proboscis apparatus. • Closed circulatory system. ...
Marine Flatworms of the World! - Introduction
... muscular pharynx (see left image below), which can expand to the same size as the whole animal. Digestions is then started outside of the body allowing the pharyngeal muscles to break up the prey which is then sucked, whole, into the intestine. Yet another technique has been observed for Eurylepta l ...
... muscular pharynx (see left image below), which can expand to the same size as the whole animal. Digestions is then started outside of the body allowing the pharyngeal muscles to break up the prey which is then sucked, whole, into the intestine. Yet another technique has been observed for Eurylepta l ...
Earthworm
An earthworm is a tube-shaped, segmented worm found in the phylum Annelida. They are commonly found living in soil, feeding on live and dead organic matter. Its digestive system runs through the length of its body. It conducts respiration through its skin. An earthworm has a double transport system composed of coelomic fluid that moves within the fluid-filled coelom and a simple, closed blood circulatory system. It has a central and a peripheral nervous system. The central nervous system consists of two ganglia above the mouth, one on either side, connected to a nerve cord running back along its length to motor neurons and sensory cells in each segment. Large numbers of chemoreceptors are concentrated near its mouth. Circumferential and longitudinal muscles on the periphery of each segment enable the worm to move. Similar sets of muscles line the gut, and their actions move the digesting food toward the worm's anus.Earthworms are hermaphrodites—each individual carries both male and female sex organs. They lack either an internal skeleton or exoskeleton, but maintain their structure with fluid-filled coelom chambers that function as a hydrostatic skeleton.""Earthworm"" is the common name for the largest members of Oligochaeta (which is either a class or a subclass depending on the author). In classical systems, they were placed in the order Opisthopora, on the basis of the male pores opening posterior to the female pores, though the internal male segments are anterior to the female. Theoretical cladistic studies have placed them, instead, in the suborder Lumbricina of the order Haplotaxida, but this may again soon change. Folk names for the earthworm include ""dew-worm"", ""rainworm"", ""night crawler"", and ""angleworm"" (due to its use as fishing bait).Larger terrestrial earthworms are also called megadriles (or big worms), as opposed to the microdriles (or small worms) in the semiaquatic families Tubificidae, Lumbriculidae, and Enchytraeidae, among others. The megadriles are characterized by having a distinct clitellum (which is more extensive than that of microdriles) and a vascular system with true capillaries.Earthworms are far less abundant in disturbed environments and are typically active only if water is present.