Document
... help track evolutionary time • To extend molecular phylogenies beyond the fossil record, we must make an assumption about how change occurs over time ...
... help track evolutionary time • To extend molecular phylogenies beyond the fossil record, we must make an assumption about how change occurs over time ...
Ch. 11 Notes
... Planarians reproduce both sexually and asexually There are no male or female planarians...each planarian produces both egg and sperm cells! Asexual - A small cut off piece of planarian can form a completely new organism...this is called regeneration ...
... Planarians reproduce both sexually and asexually There are no male or female planarians...each planarian produces both egg and sperm cells! Asexual - A small cut off piece of planarian can form a completely new organism...this is called regeneration ...
What Is an Animal?
... person approached while it was eating? Many male animals, such as lions, fight violently to defend mates. Some birds use distraction to defend their young. When a predator is near, a mother killdeer may pretend to have a broken wing and move away from her young. This action distracts the predator’s ...
... person approached while it was eating? Many male animals, such as lions, fight violently to defend mates. Some birds use distraction to defend their young. When a predator is near, a mother killdeer may pretend to have a broken wing and move away from her young. This action distracts the predator’s ...
Phoronida - Paleopolis
... small eggs undergo complete planktonic development, and species with larger eggs brood either in nidamental glands within the lophophore concavity or within the parental tube until the first larval stages and then undergo planktotrophic development. Embryonic development leads to a characteristic fr ...
... small eggs undergo complete planktonic development, and species with larger eggs brood either in nidamental glands within the lophophore concavity or within the parental tube until the first larval stages and then undergo planktotrophic development. Embryonic development leads to a characteristic fr ...
Chapter 19: Invertebrates
... Nematoda (nematodes or roundworms) Mollusca (mollusks) Annelida (annelids) Echinodermata (echinoderms) ...
... Nematoda (nematodes or roundworms) Mollusca (mollusks) Annelida (annelids) Echinodermata (echinoderms) ...
video slide
... • The set of morphological and developmental traits that define a grade – Are generally integrated into a functional whole referred to as a body plan ...
... • The set of morphological and developmental traits that define a grade – Are generally integrated into a functional whole referred to as a body plan ...
Chapter 26: Sponges, Cnidarians, and Unsegmented Worms
... In most species of hydras, the sexes are separate However, a few species are _________________________________________ o An individual that has both male and female reproductive organs and produces both sperm and eggs One unusual hydrozoan in the _______________________________________________ ...
... In most species of hydras, the sexes are separate However, a few species are _________________________________________ o An individual that has both male and female reproductive organs and produces both sperm and eggs One unusual hydrozoan in the _______________________________________________ ...
BIOL212DigestionLabAPR2012
... your way through the lab, you will examine slides and some models. For each slide you view under the scope, draw and label the specimen. When you label the drawings, be sure to include all the structures that you can identify on the specimen and the total magnification you used. ...
... your way through the lab, you will examine slides and some models. For each slide you view under the scope, draw and label the specimen. When you label the drawings, be sure to include all the structures that you can identify on the specimen and the total magnification you used. ...
College Biology - Problem Drill 15: The Evolution of Animal Diversity
... sophistication and resembled acoelomates. All surviving animals today can be traced back to their ancestors to this time period. Development of hard body parts, such as teeth, resulted in a more sophisticated diet for both predator and prey. Hard body parts were easily identified from fossil records ...
... sophistication and resembled acoelomates. All surviving animals today can be traced back to their ancestors to this time period. Development of hard body parts, such as teeth, resulted in a more sophisticated diet for both predator and prey. Hard body parts were easily identified from fossil records ...
AP Biology - Problem Drill 16: The Evolution of Animal Diversity
... sophistication and resembled acoelomates. All surviving animals today can be traced back to their ancestors to this time period. Development of hard body parts, such as teeth, resulted in a more sophisticated diet for both predator and prey. Hard body parts were easily identified from fossil records ...
... sophistication and resembled acoelomates. All surviving animals today can be traced back to their ancestors to this time period. Development of hard body parts, such as teeth, resulted in a more sophisticated diet for both predator and prey. Hard body parts were easily identified from fossil records ...
The Body in Motion
... • Most other body structures Copyright © 2005 Brooks/Cole — Thomson Learning ...
... • Most other body structures Copyright © 2005 Brooks/Cole — Thomson Learning ...
Chapter 26
... Trends in Animal Evolution As we explore the invertebrate phyla, keep in mind that these phyla share an evolutionary heritage. In Chapter 30, the relationships between the different phyla of invertebrates will be represented in an evolutionary tree of the animal kingdom. This evolutionary tree will ...
... Trends in Animal Evolution As we explore the invertebrate phyla, keep in mind that these phyla share an evolutionary heritage. In Chapter 30, the relationships between the different phyla of invertebrates will be represented in an evolutionary tree of the animal kingdom. This evolutionary tree will ...
A. mutualism
... • What is one way that cooperation helps lions to survive? • A. They hunt in a group to increase their likelihood of catching prey. • B. They all have a tan color that helps them blend into their environment. • C. They eat a variety of prey, including zebras, buffaloes, and wildebeest. • D. They li ...
... • What is one way that cooperation helps lions to survive? • A. They hunt in a group to increase their likelihood of catching prey. • B. They all have a tan color that helps them blend into their environment. • C. They eat a variety of prey, including zebras, buffaloes, and wildebeest. • D. They li ...
Harbour Porpoise - Fisheries and Oceans Canada
... porpoises are marine mammals specially adapted to live in the sea. Many people refer to all large animals that live in the sea as fish, but this is wrong. Fish and mammals are very different from each other. Some of the most basic differences are outlined in the following table: Table 1.1 Fish Most ...
... porpoises are marine mammals specially adapted to live in the sea. Many people refer to all large animals that live in the sea as fish, but this is wrong. Fish and mammals are very different from each other. Some of the most basic differences are outlined in the following table: Table 1.1 Fish Most ...
Caribbean Giant Roach
... For this reason, food and water must be provided in containers with roughened surfaces, to allow access for smaller individuals. Food can be provided in the glazed concrete water bowls sold for reptiles. These bowls have a rough surface. They also have the advantage of a naturalistic design and col ...
... For this reason, food and water must be provided in containers with roughened surfaces, to allow access for smaller individuals. Food can be provided in the glazed concrete water bowls sold for reptiles. These bowls have a rough surface. They also have the advantage of a naturalistic design and col ...
Chapter 32
... Overview: Welcome to Your Kingdom • The animal kingdom extends far beyond humans and other animals we may encounter • 1.3 million living species of animals have been identified ...
... Overview: Welcome to Your Kingdom • The animal kingdom extends far beyond humans and other animals we may encounter • 1.3 million living species of animals have been identified ...
The squid is one of the most highly developed invertebrates. It is in
... in order to confuse their attacker and allow the squid to escape. These fast-moving carnivores catch prey with their two feeding tentacles, then hold the prey with the eight arms and bite it into small pieces using a parrot-like beak. The esophagus runs through the brain, so the food must be in smal ...
... in order to confuse their attacker and allow the squid to escape. These fast-moving carnivores catch prey with their two feeding tentacles, then hold the prey with the eight arms and bite it into small pieces using a parrot-like beak. The esophagus runs through the brain, so the food must be in smal ...
Porifera - Perth Beachcombers Education Kit
... have no mouth, internal organs or nerves. Their outer layer of cells is covered with microscopic pores that lead to an inner network of canals and chambers. Microscopic structures called spicules provide a support or ‘skeleton’ for the animal. ...
... have no mouth, internal organs or nerves. Their outer layer of cells is covered with microscopic pores that lead to an inner network of canals and chambers. Microscopic structures called spicules provide a support or ‘skeleton’ for the animal. ...
What is an animal?
... – Coral reefs emerged, becoming important marine ecological niches for other organisms ...
... – Coral reefs emerged, becoming important marine ecological niches for other organisms ...
Lab Topic 18 - MDC Faculty Web Pages
... – One of the major differences between Cnidaria and Platyhelminthes is radial versus bilateral symmetry. Discuss the advantage of radial symmetry for sessile animals and bilateral symmetry for motile animals. ...
... – One of the major differences between Cnidaria and Platyhelminthes is radial versus bilateral symmetry. Discuss the advantage of radial symmetry for sessile animals and bilateral symmetry for motile animals. ...
BIL 106 – Introduction to Zoology Krempels Animal Form and
... Dermopterans (“flying lemurs”) and Scandentians (“tree shrews”) are our closest relatives. What is the next closely related (outgroup) to the Euarchontoglires? Check the phylogenetic tree, and see who shares the most recent common ancestor. Know the main difference between the Old World Monkey, New ...
... Dermopterans (“flying lemurs”) and Scandentians (“tree shrews”) are our closest relatives. What is the next closely related (outgroup) to the Euarchontoglires? Check the phylogenetic tree, and see who shares the most recent common ancestor. Know the main difference between the Old World Monkey, New ...
Ch. 32 power point notes
... • Animals can be characterized by “body plans” • One way in which zoologists categorize the diversity of animals – Is according to general features of morphology and development ...
... • Animals can be characterized by “body plans” • One way in which zoologists categorize the diversity of animals – Is according to general features of morphology and development ...
Animal coloration
Animal coloration is the general appearance of an animal resulting from the reflection or emission of light from its surfaces. Some animals are brightly coloured, while others are hard to see. In some species, such as the peacock, the male has strong patterns, conspicuous colours and is iridescent, while the female is far less visible.There are several separate reasons why animals have evolved colours. Camouflage enables an animal to remain hidden from view. Signalling enables an animal to communicate information such as warning of its ability to defend itself (aposematism). Animals also use colour in advertising, signalling services such as cleaning to animals of other species; to signal sexual status to other members of the same species; and in mimicry, taking advantage of another species' warning coloration. Some animals use colour to divert attacks by startle (deimatic behaviour), surprising a predator e.g. with eyespots or other flashes of colour, and possibly by motion dazzle, confusing a predator's attack by moving a bold pattern (such as zebra stripes) rapidly. Some animals are coloured for physical protection, such as having pigments in the skin to protect against sunburn, while some frogs can lighten or darken their skin for temperature regulation. Finally, animals can be coloured incidentally. For example, blood is red because the haem pigment needed to carry oxygen is red. Animals coloured in these ways can have striking natural patterns.Animals produce colour in different ways. Pigments are particles of coloured material. Chromatophores are cells containing pigment, which can change their size to make their colour more or less visible. Some animals, including many butterflies and birds, have microscopic structures in scales, bristles or feathers which give them brilliant iridescent colours. Other animals including squid and some deep-sea fish can produce light, sometimes of different colours. Animals often use two or more of these mechanisms together to produce the colours and effects they need.