Invertebrate Phylae
... 10. Cephalization – concentration of sense organs and nerve cells in the front of the body. 11. Hydrostatic Skeleton…annelids and certain cnidarians. Their muscles surround a fluid filled cavity that supports the muscles 12. Endoskeleton---structural support within the organism; echinoderms 13. Exos ...
... 10. Cephalization – concentration of sense organs and nerve cells in the front of the body. 11. Hydrostatic Skeleton…annelids and certain cnidarians. Their muscles surround a fluid filled cavity that supports the muscles 12. Endoskeleton---structural support within the organism; echinoderms 13. Exos ...
8.4 Plate Movement and Continental Growth
... In millions of years the continents changed not only their location but also shape, and size! Every continent has a core of the old Pangaea. This old crust is called craton. The North part of Canada and the neighboring islands are part of an old, old piece of crust called the Canadian Shield. Here w ...
... In millions of years the continents changed not only their location but also shape, and size! Every continent has a core of the old Pangaea. This old crust is called craton. The North part of Canada and the neighboring islands are part of an old, old piece of crust called the Canadian Shield. Here w ...
convection current
... - Below the crust is the mantle, which is made of rock material (upper part is solid, lower part is partly melted). The upper mantle together with the crust forms the lithosphere. - The rock material in the mantle can flow very slowly. - Below the mantle is the core. The outer core is made up mainly ...
... - Below the crust is the mantle, which is made of rock material (upper part is solid, lower part is partly melted). The upper mantle together with the crust forms the lithosphere. - The rock material in the mantle can flow very slowly. - Below the mantle is the core. The outer core is made up mainly ...
Macroevolution - Cloudfront.net
... Allopatric Speciation: Geography separates a species and this separation allows for the organisms to evolve independently. • No gene flow or little gene flow between the populations • Could occur by a river separating land that was once joined; or by earthquakes separating geographical areas so orga ...
... Allopatric Speciation: Geography separates a species and this separation allows for the organisms to evolve independently. • No gene flow or little gene flow between the populations • Could occur by a river separating land that was once joined; or by earthquakes separating geographical areas so orga ...
Chapter 9 Sponges, Cnidarians, and Worms - RubygirlScience6-7-8
... ____ 37. If certain types of worms are cut into pieces, a whole organism can grow from each piece. _________________________ ____ 38. A type of worm with many linked sections is a flatworm. _________________________ ____ 39. Animals must maintain a stable environment within their bodies to survive. ...
... ____ 37. If certain types of worms are cut into pieces, a whole organism can grow from each piece. _________________________ ____ 38. A type of worm with many linked sections is a flatworm. _________________________ ____ 39. Animals must maintain a stable environment within their bodies to survive. ...
Organic Evolution
... On the archipelago of the Galapagos Islands, which most geologists believe to be of volcanic origin without ever having had any land connection with the west coast of South America, Darwin discovered a group of small finches. These birds have since been classified into more than a dozen species. The ...
... On the archipelago of the Galapagos Islands, which most geologists believe to be of volcanic origin without ever having had any land connection with the west coast of South America, Darwin discovered a group of small finches. These birds have since been classified into more than a dozen species. The ...
Ecology and Evolution
... The concept of the ecosystem as an energy-transforming machine obeying thermodynamic principles was not widely accepted in the early part of the 20th century. It was not until the 1940s that the work of this young aquatic ecologist, also drawing from other ecologists (in the list to the right) broug ...
... The concept of the ecosystem as an energy-transforming machine obeying thermodynamic principles was not widely accepted in the early part of the 20th century. It was not until the 1940s that the work of this young aquatic ecologist, also drawing from other ecologists (in the list to the right) broug ...
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... kills harmful bacteria. First used during World War II, it prevented thousands of deaths from infection. ...
... kills harmful bacteria. First used during World War II, it prevented thousands of deaths from infection. ...
Speciation & Patterns of Evolution
... aggregates that were capable of self-replication and metabolism. • From the time of the Greeks until the 19th century, it was common “knowledge” that life could arise from nonliving matter, an idea called spontaneous generation. • While this idea had been rejected by the late Renaissance for macrosc ...
... aggregates that were capable of self-replication and metabolism. • From the time of the Greeks until the 19th century, it was common “knowledge” that life could arise from nonliving matter, an idea called spontaneous generation. • While this idea had been rejected by the late Renaissance for macrosc ...
Evolving together: the biology of symbiosis, part 1
... live inside their cells (Figure 3). These algae are collectively called zooxanthellae, a colorful term that has survived the winnowing influence of a fastidious taxonomy. Zooxanthellae are mostly dinoflagellate algae of a single genus, Symbiodinium, and achieve striking concentrations of a million a ...
... live inside their cells (Figure 3). These algae are collectively called zooxanthellae, a colorful term that has survived the winnowing influence of a fastidious taxonomy. Zooxanthellae are mostly dinoflagellate algae of a single genus, Symbiodinium, and achieve striking concentrations of a million a ...
Ch 1
... Spontaneous Generation Hypothesis: Living organisms will spontaneously generate from nonliving organic molecules in broth. Prediction: Organisms will spontaneously generate from organic molecules in broth after sterilization. Test: Use swan-necked flasks to prevent entry of microorganisms. To ensure ...
... Spontaneous Generation Hypothesis: Living organisms will spontaneously generate from nonliving organic molecules in broth. Prediction: Organisms will spontaneously generate from organic molecules in broth after sterilization. Test: Use swan-necked flasks to prevent entry of microorganisms. To ensure ...
Discovery Lab - Summit Hill Elementary PTO
... The eggs were placed in vinegar and their shells dissolved. What is left are the eggs surrounded by their cell membrane. If they didn’t have the cell membrane holding them together they would be a blob of egg! The students can gently touch the egg. The cell membrane has let in water so the concentra ...
... The eggs were placed in vinegar and their shells dissolved. What is left are the eggs surrounded by their cell membrane. If they didn’t have the cell membrane holding them together they would be a blob of egg! The students can gently touch the egg. The cell membrane has let in water so the concentra ...
Evolution
... 1. Stabilizing Selection 2. Disruptive Selection 3. Directional Selection Which type of selection has occurred if • The background is sandy with dark rocks and snails are found with either dark or light shell colors? • After spraying with malathion, more fruit flies are found to be resistant to this ...
... 1. Stabilizing Selection 2. Disruptive Selection 3. Directional Selection Which type of selection has occurred if • The background is sandy with dark rocks and snails are found with either dark or light shell colors? • After spraying with malathion, more fruit flies are found to be resistant to this ...
Chpt 28 Arthropods - Phylum Arthropoda o Arthro = jointed o Poda
... • Can detect colours (including UV) Many have the ability to communicate • Ex) Crickets rub wings (sounds) o Moths use pheromones to attract a mate (chemicals) o Bees do a wiggle dance to indicate where flowers can be found (physical) Protection • Venom – bite or sting o Other chemical o Have br ...
... • Can detect colours (including UV) Many have the ability to communicate • Ex) Crickets rub wings (sounds) o Moths use pheromones to attract a mate (chemicals) o Bees do a wiggle dance to indicate where flowers can be found (physical) Protection • Venom – bite or sting o Other chemical o Have br ...
What is Earth Science? • Earth science is the branch of science
... Layers of Earth The Crust the outer layer (5 - 70 km thick) continental crust is mainly felsic (light coloured igneous rock) oceanic crust is mainly mafic (dark coloured igneous rock) the lithosphere is the crust & the upper part of the mantle (around 100 km) The Mantle thick (2880 km) semi-so ...
... Layers of Earth The Crust the outer layer (5 - 70 km thick) continental crust is mainly felsic (light coloured igneous rock) oceanic crust is mainly mafic (dark coloured igneous rock) the lithosphere is the crust & the upper part of the mantle (around 100 km) The Mantle thick (2880 km) semi-so ...
HSC – Biology – Maintaining a Balance
... pressures, which would result in their evolution by natural selection to become different. This is termed divergent evolution. 2. If more distantly related species show similarities, this could be as a result of having moved into similar environments—they would have been exposed to similar selective ...
... pressures, which would result in their evolution by natural selection to become different. This is termed divergent evolution. 2. If more distantly related species show similarities, this could be as a result of having moved into similar environments—they would have been exposed to similar selective ...
REVIEW 6 Adaptations to the Environment Some animals, such as
... Darwin asked himself: Why were there so many species of finch on the Galapagos Islands? He reasoned that, millions of years ago, a single finch species had traveled to the islands and stayed there. The individuals in that population competed with each other for food in many different types of enviro ...
... Darwin asked himself: Why were there so many species of finch on the Galapagos Islands? He reasoned that, millions of years ago, a single finch species had traveled to the islands and stayed there. The individuals in that population competed with each other for food in many different types of enviro ...
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... (CIRCULATION) ◦ Examples: Circulatory system- blood carries materials needed for body ( oxygen, nutrients, hormones) Cytoplasm – liquid within the cell ...
... (CIRCULATION) ◦ Examples: Circulatory system- blood carries materials needed for body ( oxygen, nutrients, hormones) Cytoplasm – liquid within the cell ...
Phylum Chordata
... Many animals can reproduce asexually. Gemmules, fragmentation, and regeneration, as well as budding and parthenogenesis, are all means of asexual reproduction. All animals that can reproduce asexually (resulting in genetically identical organisms), can also reproduce sexually. Recall that sexual rep ...
... Many animals can reproduce asexually. Gemmules, fragmentation, and regeneration, as well as budding and parthenogenesis, are all means of asexual reproduction. All animals that can reproduce asexually (resulting in genetically identical organisms), can also reproduce sexually. Recall that sexual rep ...
Phylum: Cnidaria
... --Unsegmented, round worms that range in size from microscopic to 250 um. --Live almost anywhere and are a major taxa of sediment fauna. Can even live in hot springs at 62 C! --Estimates of 10,000 to 30,000 species but may be up to 20 times higher. --Many species are parasitic on plants and animals; ...
... --Unsegmented, round worms that range in size from microscopic to 250 um. --Live almost anywhere and are a major taxa of sediment fauna. Can even live in hot springs at 62 C! --Estimates of 10,000 to 30,000 species but may be up to 20 times higher. --Many species are parasitic on plants and animals; ...
the classification of living organisms
... two hosts in its life cycle – a mosquito and a vertebrate. The infected mosquito will bite a human and in turn infect them with the parasite which travels to the liver and then the red ...
... two hosts in its life cycle – a mosquito and a vertebrate. The infected mosquito will bite a human and in turn infect them with the parasite which travels to the liver and then the red ...
Evolutionary history of life
The evolutionary history of life on Earth traces the processes by which living and fossil organisms have evolved since life appeared on the planet, until the present day. Earth formed about 4.5 Ga (billion years ago) and life appeared on its surface within 1 billion years. The similarities between all present-day organisms indicate the presence of a common ancestor from which all known species have diverged through the process of evolution. More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described.