Synopsis – Grade 9 Science Term II Chapter 1: Atoms and Molecules Law of conservation of mass: Mass can neither be created nor can it be destroyed in a chemical reaction. Law of constant proportion: A chemical substance always contains the same elements in a fixed proportion by mass‚ irrespective of the source of compound. Atom: The smallest particle which is the building block of matter. The symbol of the element is made from one or two letters of the English
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Abstract: : The purpose of studying the biological organisms in the Mpenjati estuary-beach system is to distinguish between organisms and estimate diversity within the estuary found at different locations along the estuary-beach profile in accordance with factors affecting the daily routines of these marine life and other aspects in which these organisms concur with. The organisms found in these waters play an important role in the ecosystems they function in therefore it is imperative to seek a
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Classification of Living Things Classification of living things is called "Taxonomy." This is when scientists put organisms into groups when they have things in common. The first groups they use are the Kingdoms. There are five kingdoms: ➢ Animal Kingdom ➢ Plant Kingdom ➢ Fungi Kingdom ➢ Protist Kingdom ➢ Moneran Kingdom Each Kingdom is then split into smaller groups‚ called Phyla. Each Phylum is split into smaller groups called Classes‚ each Class is split into
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Flatworm Photo Sensory Behaviors Joshua Krystyniak BIO 218 Fall 2010 Lab: Wednesday 9 a.m. Introduction An organism’s environment can impact it in several different ways a few examples of this are temperature‚ lighting‚ and food sources. Some organisms have evolved certain structures to aid in the sensory of light and dark; one such example is certain members of the class Turbellaria have developed structures called photoreceptors (Pike et al. 1986). Certain
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Fall 2012 BISC 120Lg – M/W/F 10 A.M. section EXAM 3 Instructor: Dr. Karla Heidelberg PLEASE READ ALL THE INSTRUCTIONS CAREFULLY. 1.DO NOT start until instructed. 2.Make sure you have a total of 9 pages. Instructions for filling in the Blue Scantron Answer Sheet: 1. Enter your name in the NAME field (your last name first)‚ and fill in the appropriate bubbles. 2. Enter your USC STUDENT ID NUMBER in the field labeled IDENTIFICATION NUMBER‚ and fill in the appropriate bubbles
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Animals do not have cell walls‚ but do generally are multicellular‚ reproduce sexually and have gap junctions. Animals are ingesting heterotrophs; fungi have absorptive nutrition. Development order: fertilization‚ cleavages‚ blastula‚ gastrula and metamorphosis. Ancestor of animals: protozoa (choanoflagelate) Know Animal Taxonomy including Lophotrocozoa!!!! Only animals have hox genes Sponge=perifera=parazoa=lacks true tissue Eumetazoa=everything besides sponge Cephalization=sensory organs
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Nematodes The phylum Nematodes also known as roundworms are one of the most common phyla of animals. There are over 20‚000 different species of roundworms. Roundworms can be found in water‚ and on land. Roundworms have a complete digestive system with two separate openings one for food and one for getting rid of waste. This type of digestive system is very common in complex animal. Nematodes use external and internal pressure and body movement to move food through their digestive tracts
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Jellyfish‚ Roundworm and the flatworm. The sponges have symmetry and the jellyfish is radial. The roundworm and the flatworm are both bilateral symmetry. 2. List all of the Phyla that show cephalization. The Phyla that show cephalization are: Platyhelminthes‚ Nematode‚ Annelida‚ Mollusca‚ Arthropoda‚ and the Chordata. (esu.edu) 3. Do all organisms on the table have three germ layers (endoderm‚ ectoderm‚ and mesoderm)? If not‚ which phyla have fewer than three germ layers? No‚ not all organisms
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Interesting Facts-Annelida • The most recognized image of • feeding arms‚ and mouth of a jellyfish. • There are only about 200 species of Vocabulary- Cnidaria • Aboral end: The opposite side of the oral end. • Anthozoa: The class of the Coelenterata which includes the corals and sea anemones. • Cnidocytes: unique cells that function in defense and the capture of prey. • Cubozoa: Any of Cnidaria Animals in FIGURES- Cnidaria
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Planarians A planarian is a small free-living flatworm. These flat worms are usually found under rocks in fresh water. They are part of the phylum Platyhelminthes and in the class Turbellaria. Planarians are usually zoophagous‚ they feed on small living invertebrates and decaying organisms found in their community. Some planarians could eat segmented worms‚ leeches‚ snails‚ and other small herbivores. Planarians may also be organisms that gain their food energy with the help of decomposing
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