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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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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Sample Paper- 2013 Sub: Biology Class-XI Time: 3Hrs. M.M.70 General Instructions:- a. All Questions are compulsory. b. The question paper consists of 30 questions divided into four sections A‚ B‚ C and D. The section A contains 1-8 questions of 1 mark each‚ the section B consists of 9-18 question of 2 marks each‚ the section C has 19-27 question of 3 marks each and section D includes 28-30 question of 5 marks each. c. There is no overall choice. However‚ internal choice has
Free Photosynthesis Adenosine triphosphate Organelle
INTRODUCTION Cell isolation and culture are essential tools for the life sciences today specifically in the study of cell function. Isolated cells grown under controlled conditions can be manipulated and imaged at a level of resolution under the microscope‚ that is not possible in whole animals or even tissue explants (Zhang and Kuhn‚ 2011). In its simplest form‚ cell culture involves the dispersal of cells in an artificial environment composed of nutrient solutions‚ a suitable surface to support
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Chapter 29 An Overview of Land Plant Evolution 1. Describe four shared derived homologies that link charophyceans and land plants. a. The complexes that produce cellulose are rose shaped in both charophyceans and land plants. Next both have peroxisome enzymes that help minimize the loss of organic products from photorespiration. The structure of their flagellated sperm is very similar. Finally‚ both form a phragmoplast during cell division. 2. Distinguish among the kingdoms Plantae‚ Streptophyta
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Significance of Planarians Planarians are non-parasitic flatworms of the phylum Platyhelmintes found in fresh water like ponds or lakes. In my research paper I focused on Schmidtea mediterranea planarians found in Tusinia and southern Europe which are extensively used as a model organism to study development and regeneration process (Newmark 2012). Schmidtea mediterranea are chosen by researcher in molecular biology and genetics field because these planarians have diploid chromosomes and are hermaphrodite
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