Phylum Echinodermata - Austin Community College
... coelomic fluid contains amoeboid cells they do have a blood vascular system (= hemal system )with heart but its usually rudimentary is rudimentary and its function unclear may play some role in distributing nutrients ...
... coelomic fluid contains amoeboid cells they do have a blood vascular system (= hemal system )with heart but its usually rudimentary is rudimentary and its function unclear may play some role in distributing nutrients ...
Gerbils Biology anatomy and more
... radiation studies, because they can tolerate much greater whole-body radiation exposure than other animal species. They have also been used in studies of endocrine gland metabolism, as they have one of the largest ratios of adrenal weight to body weight of all animals. Gerbils have a high incidence ...
... radiation studies, because they can tolerate much greater whole-body radiation exposure than other animal species. They have also been used in studies of endocrine gland metabolism, as they have one of the largest ratios of adrenal weight to body weight of all animals. Gerbils have a high incidence ...
The Noncoelomate Animals
... Diverse in Form. Almost all animals (99%) are invertebrates, lacking a backbone. Of the estimated 10 million living animal species, only 42,500 have a backbone and are referred to as vertebrates. Animals are very diverse in form, ranging in size from ones too small to see with the naked eye to enorm ...
... Diverse in Form. Almost all animals (99%) are invertebrates, lacking a backbone. Of the estimated 10 million living animal species, only 42,500 have a backbone and are referred to as vertebrates. Animals are very diverse in form, ranging in size from ones too small to see with the naked eye to enorm ...
BIL 106 – Introduction to Zoology Krempels Animal Form and
... species, a layer of the choroid forms the reflective tapetum lucidum, which reflects light back out of the eye, giving photons a “second chance” to excite a photoreceptor). Know the main differences between the two types of photoreceptors (rods and cones) and what you would expect in an animal that ...
... species, a layer of the choroid forms the reflective tapetum lucidum, which reflects light back out of the eye, giving photons a “second chance” to excite a photoreceptor). Know the main differences between the two types of photoreceptors (rods and cones) and what you would expect in an animal that ...
Ch. 11 Notes
... But bees are important in pollinating flowers, if you remove the bees you have less flowers Wolves...good or bad? ...
... But bees are important in pollinating flowers, if you remove the bees you have less flowers Wolves...good or bad? ...
P. Arthropoda
... None of the following are unique to animals, but together distinguish animals from other organisms: Multicellular Heterotrophic No cell walls ...
... None of the following are unique to animals, but together distinguish animals from other organisms: Multicellular Heterotrophic No cell walls ...
Taking a Brief Look to the Phylum Cnidaria
... Cnidaria have no brains or even central nervous systems. Instead they have decentralized nerve nets consisting of: sensory neurons that generate signals in response to various types of stimulus, such as odors; motor neurons that tell muscles to contract; all connected by "cobwebs" of intermediate ne ...
... Cnidaria have no brains or even central nervous systems. Instead they have decentralized nerve nets consisting of: sensory neurons that generate signals in response to various types of stimulus, such as odors; motor neurons that tell muscles to contract; all connected by "cobwebs" of intermediate ne ...
BIOL212DigestionLabAPR2012
... In this Lab exercise, we will explore the digestive structures of animals. The two main objectives of this lab are to 1) compare the various digestive structures of the animal kingdom and 2) use the histology of the digestive structures to help identify the function of digestive structures as a whol ...
... In this Lab exercise, we will explore the digestive structures of animals. The two main objectives of this lab are to 1) compare the various digestive structures of the animal kingdom and 2) use the histology of the digestive structures to help identify the function of digestive structures as a whol ...
Chapter 32(Introduction to Animal Diversity)
... • Many animals have at least one larval stage • A larva is sexually immature and morphologically distinct from the adult; it eventually undergoes metamorphosis ...
... • Many animals have at least one larval stage • A larva is sexually immature and morphologically distinct from the adult; it eventually undergoes metamorphosis ...
video slide
... • The Cambrian explosion – Marks the earliest fossil appearance of many major groups of living animals – Is described by several current hypotheses ...
... • The Cambrian explosion – Marks the earliest fossil appearance of many major groups of living animals – Is described by several current hypotheses ...
Phoronida - Paleopolis
... Three types of developmental patterns occur. Species with 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 devel ...
... Three types of developmental patterns occur. Species with 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 devel ...
Invertebrate Evolution
... There are about 350,000 species of beetles spread all over the world. But let’s focus on this one. Look at the detail on this Rhinoceros beetle. The horns are used in fighting other males during mating season, and for digging. The body of an adult rhino beetle is covered by a thick exoskeleton. A pa ...
... There are about 350,000 species of beetles spread all over the world. But let’s focus on this one. Look at the detail on this Rhinoceros beetle. The horns are used in fighting other males during mating season, and for digging. The body of an adult rhino beetle is covered by a thick exoskeleton. A pa ...
Slide 1
... The embryos of marsupials and eutherians are nurtured by the placenta within the uterus ◦ Marsupial offspring complete development attached to the mother’s nipple, usually inside a pouch ...
... The embryos of marsupials and eutherians are nurtured by the placenta within the uterus ◦ Marsupial offspring complete development attached to the mother’s nipple, usually inside a pouch ...
LABORATORY EXERCISE 3 PHYLUM CNIDARIA
... In your notebook, construct a scheme based on your recorded observations and experiments which sets forth a defendable interpretation of the mechanisms involved in the feeding reaction of Hydra. PSEUDOFEEDING. Hydra can be induced to show the typical feeding response without presenting any prey to t ...
... In your notebook, construct a scheme based on your recorded observations and experiments which sets forth a defendable interpretation of the mechanisms involved in the feeding reaction of Hydra. PSEUDOFEEDING. Hydra can be induced to show the typical feeding response without presenting any prey to t ...
Research Pack – Leopard
... both techniques tell us that there are about 30-35 leopards left. This tiny population is threatened by forest loss through fires that are deliberately set each spring, by economic development – the area is an important one for Russia, containing ports that ship to the Far East – and by people hunti ...
... both techniques tell us that there are about 30-35 leopards left. This tiny population is threatened by forest loss through fires that are deliberately set each spring, by economic development – the area is an important one for Russia, containing ports that ship to the Far East – and by people hunti ...
Annelids include segmented worms, such as leeches
... bodies, with both internal and external morphological features repeated in each body segment. The clitellum is a structure on the anterior portion of the worm that generates mucus to aid in sperm transfer from one worm to another; it also forms a cocoon within whichfertilization occurs. Most annelid ...
... bodies, with both internal and external morphological features repeated in each body segment. The clitellum is a structure on the anterior portion of the worm that generates mucus to aid in sperm transfer from one worm to another; it also forms a cocoon within whichfertilization occurs. Most annelid ...
Conodonts, Calcichordates and the Origin of Vertebrates
... coincide with his tree. It also causes striking contradictions in the interpretation of classical morphological characters (for instance by interpreting ctenophorans as deuterostomes), and fails to explain the existence of orthologous genes in bilaterians. It should be noted that protostome and deut ...
... coincide with his tree. It also causes striking contradictions in the interpretation of classical morphological characters (for instance by interpreting ctenophorans as deuterostomes), and fails to explain the existence of orthologous genes in bilaterians. It should be noted that protostome and deut ...
Correlates between morphology, diet and foraging mode in the
... results on the diet of the study species coincide in general with previous data (Valverde, 1967; Vericad and Escarré, 1976; Cheylan and Guillaume, 1993). We also observed a high percentage of stationary prey in our species’ diet, suggesting an active foraging strategy (Schoener, 1971), as usual in ...
... results on the diet of the study species coincide in general with previous data (Valverde, 1967; Vericad and Escarré, 1976; Cheylan and Guillaume, 1993). We also observed a high percentage of stationary prey in our species’ diet, suggesting an active foraging strategy (Schoener, 1971), as usual in ...
Organizational Behavior, 15e (Robbins/Judge) Chapter 11
... A) Communication cannot be used to motivate and control employees in an organization. B) Communication involves the transfer and understanding of meaning. C) Communication involves the mere imparting of meaning to another person or group. D) Perfect communication is not dependent on a channel and it ...
... A) Communication cannot be used to motivate and control employees in an organization. B) Communication involves the transfer and understanding of meaning. C) Communication involves the mere imparting of meaning to another person or group. D) Perfect communication is not dependent on a channel and it ...
Porifera - Perth Beachcombers Education Kit
... called Porifera, meaning ‘pore-bearer’. They are characterised by a body that is punctured with microscopic holes or pores, as well as one or more larger round openings or vents. Because they are sedentary (fixed in one place), colourful and simple in structure, sponges are often mistaken for plants ...
... called Porifera, meaning ‘pore-bearer’. They are characterised by a body that is punctured with microscopic holes or pores, as well as one or more larger round openings or vents. Because they are sedentary (fixed in one place), colourful and simple in structure, sponges are often mistaken for plants ...
The Metazoa
... In addition, this pumping could facilitate the transport of oxygen through the body without relying on the bathing of tissues in oxygenated water by diffusion through a thin ectoderm. This means that animals could efficiently deliver oxygen throughout their bodies without compromising the effectiven ...
... In addition, this pumping could facilitate the transport of oxygen through the body without relying on the bathing of tissues in oxygenated water by diffusion through a thin ectoderm. This means that animals could efficiently deliver oxygen throughout their bodies without compromising the effectiven ...
Three Domains Now Three Domains and 6 Kingdoms
... The Evolution of the Coelom In addition, this pumping could facilitate the transport of oxygen through the body without relying on the bathing of tissues in oxygenated water by diffusion through a thin ectoderm. This means that animals could efficiently deliver oxygen throughout their bodies without ...
... The Evolution of the Coelom In addition, this pumping could facilitate the transport of oxygen through the body without relying on the bathing of tissues in oxygenated water by diffusion through a thin ectoderm. This means that animals could efficiently deliver oxygen throughout their bodies without ...
Animal communication
Animal communication is the transfer of information from one or a group of animals (sender or senders) to one or more other animals (receiver or receivers) which affects either the current or future behavior of the receivers. The transfer of information may be deliberate (e.g. a courtship display) or it may be unintentional (e.g. a prey animal detecting the scent of a predator). When animal communication involves multiple receivers, this may be referred to as an ""audience"". The study of animal communication is a rapidly growing area of study and plays an important part in the disciplines of animal behavior, sociobiology, neurobiology and animal cognition. Even in the 21st century, many prior understandings related to diverse fields such as personal symbolic name use, animal emotions, learning and animal sexual behavior, long thought to be well understood, have been revolutionized.When the information sent from the sender to receiver is either an act or a structure that manipulates the behavior of the receiver, it is referred to as a ""signal"". Signalling theory predicts that for the signal to be maintained in the population, the receiver should also receive some benefit from the interaction. Both the production of the signal from the sender and the perception and subsequent response from the receiver need to coevolve. It is important to study both the sender and receiver of the interaction, since the maintenance and persistence of the signal is dependent on the ability to both produce and recognize the signal. In many taxa, signals involve multiple mechanisms, i.e. multimodal signaling.