Amphibian

Bullfrog Dissection Background The American bullfrog, Lithobates catesbeianus, is an amphibian about the size of a teacup.(National Geographic, “American Bullfrog”). This dissection explored the anatomy of a bullfrog that had been pithed. Pithing is a technique used to prevent the frog from experiencing any cruel or unusual pain during the dissection. A pithed frog has had its nervous tissue in its brain severed thus allowing it to maintain normal bodily function during the dissection without…

scoring guideline that will give evidence that your students have mastered the standard (s); The overall scoring guideline will include students understanding animals are living this that grow and change and can be classified as mammals, birds, fish, amphibians, reptiles, or insects by the end of the unit. More specifically, students will learn long-term objectives related to the standard. LS.1.1.1 Living things require energy, water and a particular range of temperature in their environments. …

Introduction As humans, we get the opportunity to share and coexist on this planet with some extraordinarily unique and diverse organisms. Of such organisms, reptiles and amphibians are some of the most adaptable organisms on Earth, residing on every continent except bitter cold Antarctica. Here in Minnesota, There are 22 species of amphibians and 31 species of reptiles, ranging from the fast moving salamanders to the slow and nimble turtles. I got the opportunity to further research the…

*Vermiform appendix is present. *Cloacal aperture is present. *Cloacal aperture is absent. 3. Mention differences between amphibians and mammalian brain. Amphibia Mammalia *Brain is simple. *Brain is relatively complex and .…

In a recent study conducted by Sonia Shah, she has concluded that, “three recent epidemics that have devastated populations of amphibians, bees, and bats can be traced to low-level exposure to pesticides. Toxicologists believe that these seemingly benign levels of pesticide impair immune function in wildlife, leading to outbreaks of disease” (Shah). The recent bee population decrease…

well as common species of frogs. Foley reports a staggering statistic; “The International Union for the Conservation of Nature reports 32 percent of the world's amphibian species are threatened or extinct”. Various reports of amphibian disappearances range from Panama to Alaska, but on United States soil, most of the world’s declining amphibian population is occurring in the Midwest. A study presented by the University of Oregon in the year 2001 presented by Foley, took note of “[how] toad…

on earth. All creatures, large and small, have their own way of producing offspring. Many bacteria and plants produce asexually, which means they do not require a sexual partner in order to reproduce. For many other creatures such as reptiles, amphibians, mammals, and many other creatures, A sexual partner is required. Each type of organism has there own way to attract mates. Birds like turkeys fane out their tails to impress potential mates. Fireflies glow up. All of these mating…

creatures. Most of those creatures include...rabbits and hares, rats and mice, and voles, although it freely hunts any animal it can overtake, primarily other rodents and small mammals, but also larger mid-sized mammals, various birds,reptiles, amphibians and invertebrates. In ornithological study, the great horned owl is often compared to the Eurasian eagle owl, a closely related species which, despite the latter's notably larger size, occupies the same ecological niche in Eurasia, and the…

salamanders that are a close relative of the tiger salamander and are often referred to as Mexican salamanders or Mexican walking fish (Clare, 1999). They are exclusively found in the lake complex of Xochimilco near Mexico City. Axolotls are small amphibians that only grow nine to 12 inches in length and 2.11 to eight ounces in weight; relatively, they are about the size of a tea cup (“Mexican Axolotl,” 2015). Though they can be captured and cared for as exotic pets, Mexican Salamanders are…

they pollute water resources and reduce bio-diversity. For example, genetically modified crops are eliminating habitat for monarch butterflies, whose populations are down 50% in the US. Roundup herbicide has been shown to cause birth defects in amphibians, embryonic deaths and endocrine disruptions, and organ damage in animals even at very low doses. Genetically modified canola has been found growing wild in North Dakota and California, threatening to pass on its herbicide tolerant genes on to…