Chapter 17 The Evolution of Animals
... predator-prey relationships that led to diverse adaptations to feed, move, and provide protection. • Another hypothesis, studying evolution and development, called evo-devo, focuses on the evolution of genes that control the development of animal forms. ...
... predator-prey relationships that led to diverse adaptations to feed, move, and provide protection. • Another hypothesis, studying evolution and development, called evo-devo, focuses on the evolution of genes that control the development of animal forms. ...
Section 28–1 Introduction to the Arthropods
... a. Most primitive arthropods had only one or two body segments. b. Arthropod appendages evolved into different forms. c. The early body plan was modified gradually. d. Appendages of living arthropods include wings, flippers, and mouthparts. ...
... a. Most primitive arthropods had only one or two body segments. b. Arthropod appendages evolved into different forms. c. The early body plan was modified gradually. d. Appendages of living arthropods include wings, flippers, and mouthparts. ...
Section 28–1 Introduction to the Arthropods
... 17. Circle the letter of each sentence that is true about the response to the environment by arthropods. a. Most arthropods have sophisticated sense organs. b. All arthropods have a brain. c. Ganglia along a ventral nerve cord coordinate the movements of individual legs. d. Very few arthropods have ...
... 17. Circle the letter of each sentence that is true about the response to the environment by arthropods. a. Most arthropods have sophisticated sense organs. b. All arthropods have a brain. c. Ganglia along a ventral nerve cord coordinate the movements of individual legs. d. Very few arthropods have ...
Zoology Foldables CH 32-1 Introduction To The Mammals
... OUTSIDE: The placenta allows the embryo to develop much longer inside the mother’s body. INSIDE: For mammals such as rats, that time is a few weeks. For elephants, the embryo spends two years developing inside the mother. Foldable #6 (Be creative and do a good job with this…) OUSIDE: 12 Orders of Ma ...
... OUTSIDE: The placenta allows the embryo to develop much longer inside the mother’s body. INSIDE: For mammals such as rats, that time is a few weeks. For elephants, the embryo spends two years developing inside the mother. Foldable #6 (Be creative and do a good job with this…) OUSIDE: 12 Orders of Ma ...
Chapter 33: Mammals
... ancestors, mammals have evolved different structures for movement Running mammals can achieve great speeds on level ground Climbing mammals have hands and feet with flexible digits that can grasp vines and branches Flying mammals have arms modified to support flaps of skin that form wings Aquatic ma ...
... ancestors, mammals have evolved different structures for movement Running mammals can achieve great speeds on level ground Climbing mammals have hands and feet with flexible digits that can grasp vines and branches Flying mammals have arms modified to support flaps of skin that form wings Aquatic ma ...
Squid Biology/Anatomy Notes, based on Loligo sp
... by contraction of the MANTLE. Some rare, deep-water squid that swim using webbed arms don't have gills, the webs are so thin that they work as gills. Eating Squid are very successful predators. They feed on fish, shrimp, just about anything swimming that's smaller than them. Squid have eight ARMS an ...
... by contraction of the MANTLE. Some rare, deep-water squid that swim using webbed arms don't have gills, the webs are so thin that they work as gills. Eating Squid are very successful predators. They feed on fish, shrimp, just about anything swimming that's smaller than them. Squid have eight ARMS an ...
Universe of Aquatic Inverts - KsuWeb
... muscles resulting in "thrashing" movement. Because their internal pressure is high, this causes the body to flex rather than flatten. FRESHWATER TAXONOMIC INFO: Typically <1cm in length. Freshwater species are poorly known due to size and difficulty in identification. Body typically translucent and ...
... muscles resulting in "thrashing" movement. Because their internal pressure is high, this causes the body to flex rather than flatten. FRESHWATER TAXONOMIC INFO: Typically <1cm in length. Freshwater species are poorly known due to size and difficulty in identification. Body typically translucent and ...
(Roger Patterson)
... case. Ultimately, it takes just as much faith—if not more—to believe that only matter and natural laws can explain the universe. The fact that the scientific community denies the supernatural does not mean that all scientists are atheists—many claim to be Christians or have other religious beliefs. ...
... case. Ultimately, it takes just as much faith—if not more—to believe that only matter and natural laws can explain the universe. The fact that the scientific community denies the supernatural does not mean that all scientists are atheists—many claim to be Christians or have other religious beliefs. ...
Snails - Esc20.net
... Aquatic Snails in the Classroom Aquatic snails are often kept in a classroom fish aquarium; but the fish usually receive most of the attention, while the snails are often overlooked or receive only superficial consideration. Keeping and studying snails as a separate classroom project, however, can p ...
... Aquatic Snails in the Classroom Aquatic snails are often kept in a classroom fish aquarium; but the fish usually receive most of the attention, while the snails are often overlooked or receive only superficial consideration. Keeping and studying snails as a separate classroom project, however, can p ...
Chapter 9 – Gaseous Exchange in Humans
... The breathing mechanism involves two stages: Expiration (breathing out): During this process,the thorax decreases in volume to its normal size,this causes air pressure in the lungs to increase, thus forcing air out of the lungs to the atmosphere. To do this, • the external intercostal muscles relax ...
... The breathing mechanism involves two stages: Expiration (breathing out): During this process,the thorax decreases in volume to its normal size,this causes air pressure in the lungs to increase, thus forcing air out of the lungs to the atmosphere. To do this, • the external intercostal muscles relax ...
LECTURES FOR ZOO 1010—CHAPTER 1
... features in the adult form, i.e., (1) a dorsal tubular nerve cord, (2) a supportive notochord, (3) pharyngeal slits, (4) a postanal tail, and (5) endostyle or thyroid gland. Today, however, it is not thought to be the vertebrate ancestor, but rather an early offshoot of chordate evolution. It lacks ...
... features in the adult form, i.e., (1) a dorsal tubular nerve cord, (2) a supportive notochord, (3) pharyngeal slits, (4) a postanal tail, and (5) endostyle or thyroid gland. Today, however, it is not thought to be the vertebrate ancestor, but rather an early offshoot of chordate evolution. It lacks ...
Chapter 33: Mammals
... The two separate circuits – one to and from the lungs, the other to and from the rest of the body – efficiently transports gases and nutrients to every cell of a mammal’s body ...
... The two separate circuits – one to and from the lungs, the other to and from the rest of the body – efficiently transports gases and nutrients to every cell of a mammal’s body ...
Chapter 17 Notes
... The Discovery of the Hobbit People • In 2003, anthropologists discovered bones on the Indonesian island of Flores, dating back about 18,000 years, of people just over three feet tall, and with heads one-third the size of modern humans. • Since the initial discovery, researchers have unearthed the bo ...
... The Discovery of the Hobbit People • In 2003, anthropologists discovered bones on the Indonesian island of Flores, dating back about 18,000 years, of people just over three feet tall, and with heads one-third the size of modern humans. • Since the initial discovery, researchers have unearthed the bo ...
Lesson Overview
... Some land invertebrates, such as earthworms, that live in moist environments can respire across their skin, as long as it stays moist. In other invertebrates, such as land snails, respiration is ...
... Some land invertebrates, such as earthworms, that live in moist environments can respire across their skin, as long as it stays moist. In other invertebrates, such as land snails, respiration is ...
Chapter 1 The Vertebrate Story: An Overview
... Amniotes: with four extraembryonic membrane, including amnion Anamniotes Parental care: Fig. 1.20 Female salamander guarding her eggs Fig. 1.21 Precocial young 早熟 Altricial young 晚熟 12. Growth and Development General characters develop first, then the more specific characters Period of parental care ...
... Amniotes: with four extraembryonic membrane, including amnion Anamniotes Parental care: Fig. 1.20 Female salamander guarding her eggs Fig. 1.21 Precocial young 早熟 Altricial young 晚熟 12. Growth and Development General characters develop first, then the more specific characters Period of parental care ...
Vertebrate Origins 2
... probably ‘teeth.’ These are referred to as ‘conodont elements.’ Impressions of complete conodont animals have been ...
... probably ‘teeth.’ These are referred to as ‘conodont elements.’ Impressions of complete conodont animals have been ...
Chapter 17 - Fullfrontalanatomy.com
... • The sessile polyp – not able to move about • The floating medusa – the “mobile stage” – Cnidarians are carnivores that use tentacles, armed with cnidocytes (“stinging cells”), to capture prey. ...
... • The sessile polyp – not able to move about • The floating medusa – the “mobile stage” – Cnidarians are carnivores that use tentacles, armed with cnidocytes (“stinging cells”), to capture prey. ...
Deuterostome Animals
... Chimpanzees and humans diverged from a common ancestor that lived in Africa 6–7 million years ago. Since then, at least 14 humanlike species have existed. ...
... Chimpanzees and humans diverged from a common ancestor that lived in Africa 6–7 million years ago. Since then, at least 14 humanlike species have existed. ...
27-2 Respiration PowerPoint
... Alveoli provide an enormous surface area for gas exchange, and enable mammals to take in the large amounts of oxygen required by their high metabolic rates. ...
... Alveoli provide an enormous surface area for gas exchange, and enable mammals to take in the large amounts of oxygen required by their high metabolic rates. ...
Lesson Overview - Mater Academy of International Studies
... dioxide as a waste product. For that reason, all animals must obtain oxygen from their environment and release carbon dioxide. Humans can drown because our lungs can’t extract the oxygen we need from water. Most fishes have the opposite problem; out of water, their ...
... dioxide as a waste product. For that reason, all animals must obtain oxygen from their environment and release carbon dioxide. Humans can drown because our lungs can’t extract the oxygen we need from water. Most fishes have the opposite problem; out of water, their ...
Rowing locomotion by a stonefly that possesses the ancestral
... clade of crustaceans, whose wings evolved from mobile gills that already had the articulation, musculature and neural pattern required for creating fluid dynamic forces. This hypothesis has received support from recent phylogenetic and developmental studies (see below), yet it remains to be determin ...
... clade of crustaceans, whose wings evolved from mobile gills that already had the articulation, musculature and neural pattern required for creating fluid dynamic forces. This hypothesis has received support from recent phylogenetic and developmental studies (see below), yet it remains to be determin ...
All about Leeches - Center for Invertebrate Biology
... Some leeches with a proboscis and others that have jaws are temporary ectoparasites on a variety of different vertebrates including fish, turtles, crocodiles, and humans. These are the bloodsuckers and are the ones that most people think of when the word “leech” is mentioned. They don't need much in ...
... Some leeches with a proboscis and others that have jaws are temporary ectoparasites on a variety of different vertebrates including fish, turtles, crocodiles, and humans. These are the bloodsuckers and are the ones that most people think of when the word “leech” is mentioned. They don't need much in ...
Biological Monitoring
... The kick seine method is a simple procedure for collecting stream-dwelling macroinvertebrates. It is used in riffle areas where the majority of the organisms prefer to live. This method can be quite effective in determining relative stream health; however, it is only as good as the sampling techniqu ...
... The kick seine method is a simple procedure for collecting stream-dwelling macroinvertebrates. It is used in riffle areas where the majority of the organisms prefer to live. This method can be quite effective in determining relative stream health; however, it is only as good as the sampling techniqu ...
Freshwater Macroinvertebrates
... surface and avoid being swept away by the current. Water pennies are usually found in riffles, where water velocity and turbulence are high. Burrowers and sprawlers are adapted to inhabit sediments comprised mainly of sand and silt. Burrowing mayflies (Ephemeroptera–Ephemeridae) have large, spade-sh ...
... surface and avoid being swept away by the current. Water pennies are usually found in riffles, where water velocity and turbulence are high. Burrowers and sprawlers are adapted to inhabit sediments comprised mainly of sand and silt. Burrowing mayflies (Ephemeroptera–Ephemeridae) have large, spade-sh ...
Freshwater Invertebrates
... • have basic mouthparts, without any special modifications • basic mouthparts include two jaw like structures (mandibles) for cutting and grinding and often an upper lip (labrum) and a lower lip (labium) to help keep food in their mouths • Material is usually >1 mm, referred to as Coarse Particulate ...
... • have basic mouthparts, without any special modifications • basic mouthparts include two jaw like structures (mandibles) for cutting and grinding and often an upper lip (labrum) and a lower lip (labium) to help keep food in their mouths • Material is usually >1 mm, referred to as Coarse Particulate ...