Earthworm Dissection
... vessel and reenter the aortic arches. The worm has a closed circulatory system. The earthworm takes in a mixture of soil and organic matter through its mouth, which is the beginning of the digestive tract. The mixture enters the pharynx, which is located in segments 1–6. The esophagus, in segments 6 ...
... vessel and reenter the aortic arches. The worm has a closed circulatory system. The earthworm takes in a mixture of soil and organic matter through its mouth, which is the beginning of the digestive tract. The mixture enters the pharynx, which is located in segments 1–6. The esophagus, in segments 6 ...
Earthworm Dissection - biology with mrs. h
... 3. Notice that the earthworm has a rounded dorsal (back) surface and a flatter ventral (belly) surface. Usually the dorsal surface is darker than the ventral surface (though sometimes this is obscured in ...
... 3. Notice that the earthworm has a rounded dorsal (back) surface and a flatter ventral (belly) surface. Usually the dorsal surface is darker than the ventral surface (though sometimes this is obscured in ...
EARTHWORM DISSECTION
... 13. Which parts of the earthworm serve as its brain? _________________________________________________________________ 14. How are these parts connected to the rest of the body? _________________________________________________________________ Excretory functions are carried on by nephridia, which ...
... 13. Which parts of the earthworm serve as its brain? _________________________________________________________________ 14. How are these parts connected to the rest of the body? _________________________________________________________________ Excretory functions are carried on by nephridia, which ...
Word
... bones remains the same, particularly among the terrestrial animals. Differences in these animals such as size, shape, posture and type of locomotion is achieved by changing the relative length and size of individual bones in the skeleton. This is sometimes accompanied by the fusion of two or more bo ...
... bones remains the same, particularly among the terrestrial animals. Differences in these animals such as size, shape, posture and type of locomotion is achieved by changing the relative length and size of individual bones in the skeleton. This is sometimes accompanied by the fusion of two or more bo ...
Lab 10- FishDissection
... arrangement of bones remains the same, particularly among the terrestrial animals. Differences in these animals such as size, shape, posture and type of locomotion is achieved by changing the relative length and size of individual bones in the skeleton. This is sometimes accompanied by the fusion of ...
... arrangement of bones remains the same, particularly among the terrestrial animals. Differences in these animals such as size, shape, posture and type of locomotion is achieved by changing the relative length and size of individual bones in the skeleton. This is sometimes accompanied by the fusion of ...
Ch3-4.Embryology.Tissues.Lecture
... (b) 20 days. The neural folds form by folding of the neural plate and then deepen, producing the neural groove. Neural fold cells migrate to form the neural crest. Three mesodermal aggregates form on each side of the notochord (somite, intermediate mesoderm, and lateral plate mesoderm). Lateral plat ...
... (b) 20 days. The neural folds form by folding of the neural plate and then deepen, producing the neural groove. Neural fold cells migrate to form the neural crest. Three mesodermal aggregates form on each side of the notochord (somite, intermediate mesoderm, and lateral plate mesoderm). Lateral plat ...
Superclass AGNATHA
... Dissect the perch. Begin by making a mid-sagittal dorsal incision through the skin (not the muscle) from the back of the head to the dorsal edge of the tail fin, to the left of the dorsal fins. Continue this incision down the left side of the tail just anterior to the caudal fin. From the ventral ed ...
... Dissect the perch. Begin by making a mid-sagittal dorsal incision through the skin (not the muscle) from the back of the head to the dorsal edge of the tail fin, to the left of the dorsal fins. Continue this incision down the left side of the tail just anterior to the caudal fin. From the ventral ed ...
dragon genetics lab
... 2. Start with the green chromosome. One person get two Popsicle sticks—one to be the mama’s chromosomes and one be the dada’s chromosomes. Each side of the stick represents a chromosome and the two sides together represent the two chromosomes you, as a surrogate parent dragon, have. 3. Write down th ...
... 2. Start with the green chromosome. One person get two Popsicle sticks—one to be the mama’s chromosomes and one be the dada’s chromosomes. Each side of the stick represents a chromosome and the two sides together represent the two chromosomes you, as a surrogate parent dragon, have. 3. Write down th ...
Family Planning and Assisted Reproductive Technologies (ART)
... cell (blastomere). • At this early stage of embryo development, all of the cells have the same potential for development, therefore, removal of one or two cells from the embryo is not detrimental and the embryo can continue its normal development following the procedure. ...
... cell (blastomere). • At this early stage of embryo development, all of the cells have the same potential for development, therefore, removal of one or two cells from the embryo is not detrimental and the embryo can continue its normal development following the procedure. ...
Earthworms - Karen Wong
... Clitellm is about 1/3 back from the anterior of the worm. It is thick and cylindrical. (1) Setae are bristles on the ventral side of the worm. These hair-like structures help the worm move and sense its environment. ...
... Clitellm is about 1/3 back from the anterior of the worm. It is thick and cylindrical. (1) Setae are bristles on the ventral side of the worm. These hair-like structures help the worm move and sense its environment. ...
Todays lab dissection burrows into the fascinating world of errant
... worm. It is an eastern species that is farmed commercially for bait. Small populations found locally began when anglars introduce them, loosing them from their hooks or releasing then after fishing. This errant polychaete is an active hunting predator with a homonomous body type with bilateral symme ...
... worm. It is an eastern species that is farmed commercially for bait. Small populations found locally began when anglars introduce them, loosing them from their hooks or releasing then after fishing. This errant polychaete is an active hunting predator with a homonomous body type with bilateral symme ...
Fertilization & Development
... large numbers of eggs are released into the water to ensure species survival. ...
... large numbers of eggs are released into the water to ensure species survival. ...
LORELEI: Guiding the Fate of Male Gametes
... and curl around inside the embryo sac (see figure). In addition, whereas the wild-type embryo sac loses its ability to attract pollen tubes after fertilization is initiated, lre mutant embryo sacs continue to attract additional pollen tubes. Embryo sac development appears normal in the mutant, sugge ...
... and curl around inside the embryo sac (see figure). In addition, whereas the wild-type embryo sac loses its ability to attract pollen tubes after fertilization is initiated, lre mutant embryo sacs continue to attract additional pollen tubes. Embryo sac development appears normal in the mutant, sugge ...
Chapter 06 Lecture Outline
... Copyright ©The McGraw-Hill Companies, Inc. Permission required for reproduction or display Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. ...
... Copyright ©The McGraw-Hill Companies, Inc. Permission required for reproduction or display Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. ...
9. External Anatomy
... Read Biology a Guide to the Natural World Chapter 25 INTRODUCTION Animalia is the kingdom that we are most familiar with and includes organisms such as humans, dogs, whales, and reptiles (plus much more). In this exercise, you will study the anatomy of a fetal pig, which is similar to human’s organs ...
... Read Biology a Guide to the Natural World Chapter 25 INTRODUCTION Animalia is the kingdom that we are most familiar with and includes organisms such as humans, dogs, whales, and reptiles (plus much more). In this exercise, you will study the anatomy of a fetal pig, which is similar to human’s organs ...
Arachnida - Bloggen.be
... 1) Occurs through modified book gills, or book lungs. 2) Occurs through tracheae (sieve or tube). 3) Many arachnids contain the respiratory pigment hemocyanin. ...
... 1) Occurs through modified book gills, or book lungs. 2) Occurs through tracheae (sieve or tube). 3) Many arachnids contain the respiratory pigment hemocyanin. ...
External Anatomy of Insects: The Exoskeleton, Head and Mouthparts
... is attached the long multiarticulate filamentous flagellum. The antennae are the first pair of segmental appendages of the insect head and are innervated by the deutocerebrum of the brain. ...
... is attached the long multiarticulate filamentous flagellum. The antennae are the first pair of segmental appendages of the insect head and are innervated by the deutocerebrum of the brain. ...
Zoo Ch 37-2 Annelida
... Oxygen and CO2 diffuse directly through skin Gas exchange only happens if skin is moist ...
... Oxygen and CO2 diffuse directly through skin Gas exchange only happens if skin is moist ...
Earthworm Dissection
... receptacles of another worm. Fertilization of the eggs takes place outside the body as the cocoon moves forward over the body, picking up the eggs of one worm and the sperm of its mate. The pumping organs of the circulatory system are five aortic arches. Circulatory fluids travel from the arches thr ...
... receptacles of another worm. Fertilization of the eggs takes place outside the body as the cocoon moves forward over the body, picking up the eggs of one worm and the sperm of its mate. The pumping organs of the circulatory system are five aortic arches. Circulatory fluids travel from the arches thr ...
Chordate Lab Handout
... lifted forward. Care should be taken to not remove any structures but the intestinal tract and the spleen. The tract may be cut just forward of the stomach and completely cleared away.” 1 10. “The air (swim) bladder may be located as a tough membranous structure closely applied to the dorsal surface ...
... lifted forward. Care should be taken to not remove any structures but the intestinal tract and the spleen. The tract may be cut just forward of the stomach and completely cleared away.” 1 10. “The air (swim) bladder may be located as a tough membranous structure closely applied to the dorsal surface ...
Earthworm dissection
... 2. Insert your scissors in to the mouth and snip with your scissors, segment by segment, from anterior (head) to posterior end along the dorsal side. DO NOT CUT PAST THE CLITELLUM. 3. Your worm will not open up until you carefully break the septa (thin walls) holding the skin to worm’s body. With yo ...
... 2. Insert your scissors in to the mouth and snip with your scissors, segment by segment, from anterior (head) to posterior end along the dorsal side. DO NOT CUT PAST THE CLITELLUM. 3. Your worm will not open up until you carefully break the septa (thin walls) holding the skin to worm’s body. With yo ...
Notes
... • Anterior oral hood protects cirri – fingerlike feeding tentacles • Posterior of oral hood has mouth leads to pharynx with many pharyngeal slits supported by gill bars • Atrium forms outside pharynx • Atrium opening is called atriopore ...
... • Anterior oral hood protects cirri – fingerlike feeding tentacles • Posterior of oral hood has mouth leads to pharynx with many pharyngeal slits supported by gill bars • Atrium forms outside pharynx • Atrium opening is called atriopore ...
- Academy Test Bank
... phenotype only if they are homozygous (two paired genes are the same). An individual may have a gene for straight hair, but because it is a recessive trait, it may appear only on the genotype if the individual also carries a gene for curly hair (heterozygous). Another individual might actually have ...
... phenotype only if they are homozygous (two paired genes are the same). An individual may have a gene for straight hair, but because it is a recessive trait, it may appear only on the genotype if the individual also carries a gene for curly hair (heterozygous). Another individual might actually have ...
PART 1. Principles of development in biology
... Homologies must be made carefully and must always refer to the level of organization being compared. For instance, the bird wing and the bat wing are homologous as forelimbs, but not as wings. In other words, they share a common underlying structure of forelimb bones because birds and mammals share ...
... Homologies must be made carefully and must always refer to the level of organization being compared. For instance, the bird wing and the bat wing are homologous as forelimbs, but not as wings. In other words, they share a common underlying structure of forelimb bones because birds and mammals share ...
Biology 20 Laboratory Quiz Quiz # Animal Reproduction – Take
... A) It allows for early detection of genetic disorders. B) This may block progesterone production and thus cause a spontaneous abortion. C) Radiation and drugs should be avoided, as the embryo is extremely sensitive to birth defects at this time. D) It may compress the mother's abdominal organs, caus ...
... A) It allows for early detection of genetic disorders. B) This may block progesterone production and thus cause a spontaneous abortion. C) Radiation and drugs should be avoided, as the embryo is extremely sensitive to birth defects at this time. D) It may compress the mother's abdominal organs, caus ...