branch turned into organisms which were asymmetrical‚ with no true tissue layers and no gut although it has two cell layers – the inner layers consists of collar cells and between the cell layers a jelly-like layer‚ containing tiny spikes‚ is found – (Phylum Porifera)‚ whilst the other started to develop true tissues. Multicellular tissue organism‚ second branch from the ancestral stock‚ differentiated further to become two layered and three layered organisms. Those multicellular organisms which
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heterotrophs Range from sponges to vertebrates 2. Who developed the binomial system of nomenclature (genus and species)? Answer: Carl von Linne. 3. List the levels of classification beginning with kingdom and ending with species. Answer: Kingdom>Phylum>Class>Order>Family>Genus>Species Chapter 15 and 16 1. How are prokaryotic cells characterized? Explain each in detail. Answer: Cytoplasm; Plasma membrane; Ribosomes; Cell wall composed of peptidoglycan; Glycocalyx – jelly like capsule that helps
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CHAPTER NO-5 KINGDOM ANIMALIA Phylum Porifera (GK: Porous = Pores + Ferro = form) Main characters: 1. They are commonly called as sponges. 2. They are sessile animals. 3. Sponges range in height from about 1cm to 2cm. 4. More than 5000 species of sponges are found. 5. All are marine‚ while some are fresh water. 6. The central body cavity is called spongocoel. 7. A single large opening is called as osculum. 8. They are filter feeders. 9. Body lining is formed by flagellated cells
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PLATYHELMINTHES About Platyhelminthes Platyhelminthes are an ancient phylum and there is little information into how it evolved. Their evolutionary history remains unknown because soft-bodied organisms do not fossilize well. Scientists believe that the first flatworm began to evolve 550 years ago. Platyhelminthes otherwise known as “flatworms” have a wide variety of species within the phylum and have positive and negative effects on those who interact with them. Some examples of Platyhelminthes
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Q.5. Describe five kingdom classification Margulus and schwartz. OR Describe the structure and characteristics of Virus. OR Write four common characteristics of the following. Phylum Protozoa Phylum Porifera Phylum Coelenterata Phylum Annelida Phylum Mollusca Phylum Echinodermata Phylum Arthropoda OR Write four common characteristics of the following Class Pisces www.moalims.com www.moalims.com Amphibia Reptilia Aves Mammalia Q.6. Write down four functions
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knowledge about the origin of chordates it has come to conclusion that there are many similarities and common ancestry brought into play about the origin of chordates. Chordates aren’t a development of its own species but it is a development of different phylums such as the echinoderm‚ the cephalochordate‚ hemichordates‚ pogonophorans. Chordates evolved from some deuterostome ancestor as they have similarities in embryonic development‚ type of coelom and larval stages. Another interesting fact that I learned
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Exam Biology 114 Chapters 32 (Intro to Animals)‚ 33 (Protostomes)‚ 34 (Deuterostome) and Fungi __C___ 1. A crab is a member of the phylum a. cnidaria b. mollusca c. arthropoda d. annelida e. ctenophore ___E__ 2. When asked‚ you tell a child that a centipede is a a. member of the class insecta b. part of the largest phylum arthropoda‚ related to the lobster c. part of the subphylum cheliceriformes d. part of the subphylum myriapoda e. B
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Animal Kingdom The animal kingdom is a taxonomic kingdom composed of multicellular‚ eukaryotic organisms. Mostly‚ their body structures become fixed as they develop‚ yet still some organisms in this kingdom have the ability to undergo metamorphosis. The majority of these organisms are motile‚ which means they can move on their own and with spontaneity. All animals are heterotrophic‚ which implies that they depend on other organisms for food. Animals live in places that provide their necessities
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sponges. The phyla’s that do have three germ layers are the: Flatworm‚ roundworm‚ mollusks‚ echinoidea‚ chordates and the arthropods. (Clc.U.C.edu. 1997) 4. One phylum on the table has more species that all the others. State the name of this phylum‚ and provide several different examples of the species found in the phylum. The phylum that has more species than the others is the Arthropoda. Examples found in the arthropoda are: cockroachs‚ ants‚ flies‚ bees‚ beetles‚ and butterflies. (Biology Questions
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this essay I will talk about two kinds of organisms that are called worms. That’s organisms use it in a labs. Which are the flatworm and the roundworms. However‚ every kind belongs to different phylum‚ so they are not closely related to each other. Flatworms ( phylum Platyhelminthes) and roundworms ( phylum Nematoda)‚ but there are many similarities and differences between these two types of organisms. Similarity: • There are many similarities between the two groups of worms‚ Platyhelminthes and
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