the entire array of vertebrate sprang: Fish and eventually reptiles (and birds)‚ amphibians‚ and mammals. So before you can understand how the world of fish came to be‚ you must start with these early ancestors. Vertebrates are members of the phylum Chordata. These chordates share three key characteristics in common: Notochord: A flexible‚ longitudinal rod present in all vertebrate embryos and some adults. This device served as an early “backbone” for this family of creatures. [4]
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Lesson 9 Phylum Arthropoda I. General characteristics a. Triploblastic b. Bilateral symmetry c. Segmented body divided into functional groups –tagmata d. Jointed appendages i. One pair to each segment ii. Number mostly reduced iii. Often modified for specialized function e. Small coelom f. Cuticular exoskeleton containing chitin i. Molt at intervals g. Separated sexes i. Metamorphisis h. Nervous‚ digestive‚ circulatory (open sys)‚ muscular‚ excretory system i. Marine freshwater terrestrial
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Nabila Anika • Vascular plants-plants with vascular tissue; pteridophytes‚ gymnosperms‚ and angiosperms; includes all modern species except the mosses and their relatives • Vascular tissue-plant tissue consisting of cells joined into tubes that transport water and nutrients throughout the plant body • Pteridophytes-seedless plants with true roots and lignified vascular tissue; ferns‚ horsetails‚ and whisk ferns • Bryophytes-nonvascular plants; lack water conducting tissues and
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Cambrian period 543-490 million years Introduction The Cambrian Period marks the beginning of the Paleozoic Era. This period gets its name from a place in Wales where the first examples of this type of ancient life was found. The period lasted for nearly 53 million years‚ from about 543 million years ago until 490 million years ago. The Cambrian Period marks an important point in the history of life on earth; it is the time when most of the major groups
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French broom is an invasive plant that destroys the surrounding environment. Broom is described as an “upright‚ evergreen shrub‚ commonly to ten feet tall” (“Invasive Plants of California’s Wildland”). It is an invasive plant species‚ commonly found in numerous places in California‚ for example‚ the Bay Area. Broom is a noxious weed‚ especially in the states of Hawaii‚ Oregon‚ Washington State and California. Nowadays more people are recognizing how detrimental it can be to nature. In fact‚ there
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derived from osmosis‚ however is much more complex. Osmosis is the diffusion of water down its cavity gradient through a semipermeable membrane. The aim of the experiment was to determine whether P. lurca (Phylum Sipuncula) was an osmoconformer and U. coarctata‚ a fiddler crab (Phylum Arthropoda‚ Subphylum Crustacea) was an osmoregulator (School of Marine and Tropical Biology‚ 2010). It was hypothesised that P. lurca is an osmoconformer with a soft-body while U. coarctata is an osmoregulator
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Chapter 19 – Introduction to the Angiosperms I. Diversity in the Phylum Anthophyta II. The Flower a. The flower is a determinate shoot – that is‚ a shoot with the growth of a limited ruation‚ that bears sporophylls‚ which are sporangium-bearing leaves b. Carpel * Contains the ovules‚ which develop into seeds after fertilization * The Vessel c. Inflorescense * Flowers that may be clustered in various ways into aggregations d. Pedicel * The stalk of an individual
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N10/4/BIOLO/HPM/ENG/TZ0/XX 88106001 Biology HigHer level PaPer 1 Tuesday 2 November 2010 (afternoon) 1 hour INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. 8810-6001 17 pages © International Baccalaureate Organization 2010 – 2 – 1. N10/4/BIOLO/HPM/ENG/TZ0/XX [Question and image
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One interesting fact about the 3 Toed Pale Throated Sloth is that on average the female sloth is bigger that the male sloth. Their classification system is they are part of the Animalia Kingdom‚ Chordata Phylum‚ Mammalia Class‚ Pilosa Order‚ Bradypodidae Family‚ and the Bradypus Genus. They are found in many different places. Their habitats are found in Venezuela‚ Brazil‚ Guyana‚ Suriname‚ Bolivia and French Guiana. These places are in the tropical rainforest‚ and are usually have a climate that
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Treatment of Antibiotic Pharmaceutical Wastewater Using a Rotating Biological Contactor One of the treatment of the wastewater is the treatment of antibiotic pharmaceutical wastewater using a rotating biological contactor. For your information‚ Rotating Biological Contactors (RBC) are effective for treating wastewater‚ while they are rarely reported to be used for treating antibiotic pharmaceutical wastewater (APW). Next‚ the biological treatment processes have been widely used in wastewater treatment
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