Biology SBI3U-C Unit 5 Lesson 17 Key Questions: 53. Using the shark anatomy picture and the key provided, classify the 10 sharks labelled 1-10 in the diagram below. 1) Rajidae 2) Alopiidae 3) Pristiophoridae 4) Isuridae 5) Sphrynidea 6) Scapanrhynchidae 7) Hexanchidae 8) Rhinocodontidae 9) Dasyatidae 10) Carcharhindiae 54. Explain what is meant by binomial nomenclature. Binomial nomenclature is a system in which every species has a two-part name. The system is based upon similarities that exist among common organisms so that the more closely related organisms share the first part of their name. 55. a) Which two of the following three species are more closely related: Entamoeba histolytica, Escherichia coli, Entamoeba coli? Explain. Escherichia …show more content…
They expand rapidly and spread quickly over wide areas, and out-compete or prey on native species. While all invasive species are non-native species, not all non-native species are invasive unless they meet these guidelines. If they are useful and not harmful to the ecosystem, the non-native species will not be considered invasive. 66. In a survey of a stream bank in northeastern Ontario, a local naturalist group found that 20% of the plant cover was made up of purple loosestrife. Briefly describe two possible reasons for the presence of this invasive species on the stream bank. The seeds or spores of this plant could have been accidentally introduced when goods were shipped from other continents. This plant, the purple loosestrife is native to Europe and Asia, so when goods have been transported from there, they could have been introduced to our ecosystems. It also could have been introduced unintentionally, since it was sold in packets of flower seeds for gardeners. This plant is invasive in wet soil, so it could have unintentionally been planted near the stream bank, invaded the ecosystem and then drove out other native wetland
There are many invasive species that are affecting the Everglades by invading the ecosystem. Many of these species were brought to the everglades by people and animals. They are changing the ecosystem and are competing with natural native inhabitants of that area. The native species have to adapt to the change or move to another area to survive. Both plant and animal species have invaded the area within the Everglades.
For example the subspecies Colinus virginianus ridgwayi is commonly called the masked bobwhite because males have a fully black face
Carolus Linnaeus, also known as Carl Linnaeus, was a Swedish Botanist from the 18th century (Müller-Wille “Carolus Linnaeus”). He was most known for organizing life using binomial nomenclature, now known as scientific names. For this reason he is called the Father of Taxonomy (Waggoner “Carl Linnaeus”). Carl Linnaeus has greatly impacted modern science by providing a means for classification of organisms, allowing for managing of biodiversity. Carolus Linnaeus was born on May 23rd, 1707 in Stenbrohult, Sweden (Waggoner “Carl Linnaeus”).
Without knowing what the long term consequences are feral ungulates which include pigs, goats and sheep were all brought to Hawaii by foreigners as a food source and some were also brought in for sport hunting. What started as a good intention soon turned into a menace for the Hawaiian Islands as these animals destroyed native plants, threatens the existence of native animals, and lastly threatens the health and welfare. With no predators except for humans, the feral ungulates reproduced at an alarming rate and nothing was put into place to control the populations of these animals. Therefore the population grew and the problems that came with it also became a huge factor in the livelihood of all that inhabits the Hawaiian Islands. Methods to control the population of all feral ungulates need to be put into place to protect the native species of Hawaii which in turn would preserve the traditions and the culture of the Islands.
As international movements increase, risks spread. Some non-native species are not obviously detrimental on introduction, but become so in the future and intensive monitoring is required. Negative invasive species can compete and overcome native species in 6 ways. 1. Competition: Food sources and habitat reduced for native species.
The teeth of Bathygnathus are long, recurved, and distinctively teardrop-shaped, that be widest at the middle rather than the base. The teardrahp shaipe of the teeth is an indication that Bathygnathus belongs to the family Sphenacodontidae. The shaipe of the maxilla indicates that Bathygnathus had an deep skul like those of other advanced sphenacodontids like Dimetrodon. Like Dimetrodon, Bathygnathus has a enlarged caniniform tooth near an front of the
After this each group tallied the same "species" together
All three carry evidence for evolution. Comparative anatomy supports the ecidence of evalution because of common descent (a group of organisms that show similar traits). For DNA similarities, the simialr molecules are; the closer the relation is most likely to be. Over time,
From the book, The Beak of The Finch in pages 21-43, I found many interesting facts, however, one thing that I found most interesting was about Linnaeus, his theories, and how he influenced Darwin. Carl Linnaeus, also known as ‘The Father of Taxonomy’ was a botanist, physician and zoologist born in the early 1700’s. Linnaeus was and is still one of the most influential taxonomist, not only to Darwin, but also to modern science as he contributed largely to the making of the system in which is used to name, rank and classify organisms, as well as the two-word naming system called the binomial nomenclature. According to the website Classification System, Linnaeus’s classification system was made into a hierarchy structure which is divided into
An invasive species is a species which moves into a new different ecosystem and which results in the ecosystem being harmed. A foreign species coming into am environment is not necessarily invasive. One is only considered invasive if its population rises quickly in the new environment and this rise is either caused by or causes the fall of a native species. An invasive species doesn't need to originate from a different country, but just a different ecosystem. Invasive species are primarily spread by human activities, often unintentionally.
Zebra mussels, originally from the Caspian Sea, were introduced to the U.S. Great Lakes region in 1988, and have inhabited our lakes and streams ever since (Ballaro and Morley 1). After just a few years, an entire lake or stream can be taken over by zebra mussels or other invasive species. In recent years, zebra mussels have found their way to many of our Minnesota lakes along with Eurasian milfoil. Our environment has been both negatively and positively changed by invasive species. This paper will give the definition of invasive species, and explain the factors that make a species invasive.
An invasion has been underway that has continued to endanger much of Americas ecosystems. To call a species “non-native” or “invasive” does not sound too threatening, but the truth is they are one of the primary threats to native wildlife in an area. An invasive species can be any kind of living organism—an amphibian, mammal, plant, insect, fish, fungus, bacteria, or even an organism’s seeds or eggs—that is not native to an ecosystem and which causes harm to the environment, the economy or even, human health (Carroll). Species have always been restless, continually testing their boundaries, but at the same time we have a global system that makes the transportation of plants and animals almost effortless on their part. One specific example
As a result, the entire ecosystem will be disoriented. Invasive Species in Region Africanized bees, brown tree snake and Zebra mussels are examples of popular invasive species (USDA). Endemic species
He used a binomial nomenclature (a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms) in naming them. That is to say, organisms were given two Latin names--genus and species. Each genus could have many related species. Each genus was also part of larger categories of living things. This Linnaean system of classification is today the basis for naming and describing organisms in all fields of