an algae chlamydomonas has found to have neuro-motor system, but is that sure that plants do not have brain and nervous system?? don't they show any traits regarding that?? what do you think?? i think this field still needs some research.
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Neuro-motor system, no way.  That would involve neurons and neurotransmitters.  None of these have been found in plants.\n\nHowever, there is definite physiologic responses that could be defined as behaviour in plants.  These responses and stimuli are much simpler than we can appreciate.
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Well, first of all, at the highest taxonomic classification, fish are in Kingdom Animalia (as opposed to protista or plantae), so they are clearly animals from a scientific standpoint.  The key is that they are multicellular, capable of locomotion, and respond to their environment.  \n\nIf someone is arguing that a fish is not an animal, I am not sure where they are coming from.  Fish are fairly advanced, they have vertebrae, circulatory systems, and a brain.  They are clearly not plants or single celled organisms.
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the only statement about associative learning in unicellular organisms like the amoeba that I was able to find quickly is below, and that says no, you can't teach amoebas tricks. Their learning processes seem to be limited to habituation. Sorry.\n\nThe capacity for habituation of stimuli is important for the survival of organisms so that habituation appears to have been adopted at an early level of evolution. In this paper the question is raised and experimentally tested, whether or not unicellular organisms can habituate. A positive answer leads to the conclusion that a simple form of learning, such as habituation, is not necessarily associated with nervous systems, which do not exist in unicellular eukaryotes. At the same time, evidence for higher forms of learning, such as the association of two stimuli, has failed to be established experimentally in unicellular organisms.
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Cells are the little organisms that work together to make one big organism.  Your boddy has all kinds of different types of cells to do different things, like blood cells, nerve cells, etc.  Plants have root cells, leave cells (where the photosynthesis takes place, hence those are the cells with chloroplasts, which makes them do that function.)\nWhat's cools is that if you cut off a plants roots, it's cells for it's stem will become root cells and it's roots will grow back.  I don't think this works w/ peoplw/animals.  With people, a fetus's cells that have not been defined to a certain "task" yet will all do different things and can change to what they are needed for where they are as the fetus develops.  After it's defined, though, I don't animal/human cells can change as plant ones can, though.
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aaah plants are soooooo boring. I hate plants.  I'd wait for human genetics rather than being bored out of my miiiind with plants.
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Just going with what Jag said, there doesn't seem to be any correct answer.\n\nAnimalia are never photosynthetic.\n\nEubacteria are never eukaryotes.\n\nFungi are never photosynthetic.\n\nPlantae are never single celled.\n\nNone of the answer is correct. In point of fact most single-celled eukaryotes that are either heterotrophic or photosynthetic belong to the kingdom Protista. But Protista isn't one of the options given.\n\nI think your teacher stuffed up the question.
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I've haven't covered it all yet, but in no particular order:\n\nDinosaur food-(Non-flowering plants)\n\nLight Opera-(Photosynthesis)\n\nGender Benders-(The diverse physiology of sex)\n\nEverybody does it-(pollination and seed distribution by animals)\n\nHitchhikers and drifters-(Mechanical seed and pollen distribution)\n\nA Manual for a Quickie Divorce-(Plant toxins)\n\nMind Games (Psychotropic compounds) \n\nFashion through the ages (Fibers and dyes)\n\nAppendix (Oops Plants ain't got 'em!)\n\nITS MY BOOK ISN'T IT?\n\nI've only named a few chapters so far.  Inspiration cannot be rushed. And, I removed my (Oh, So clever!) annotations. \n  \nBTW-I have serious issues with the wiki TOC- (Besides its being boring)\n\nFungi, bacteria are not plants. (SHUDDER).\nVirus are not even considered alive (GASP).\n\nAnd you think I'M UNFOCUSED!
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If plants didn't have babies, there would be no new plants to replace the old ones when they died. Then, eventually, there would be no plants and you would not be able to ask that question. Instead you would ask why the plants didn't have babies. What was wrong with them?
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Hey, cool\nI'm a science nut, too\n(though I dabble in theoretical/quasitheoretical shit)\nand now I'm turning to you for some help...\nFor several years now, I've been twisted into a new shape by an article I encountered one time stating that uh geoligists (I guess) found portions of neurons (yes brain cells) in some rocks somewhere!!??\nThe hell?\nI have to assume they would have mentioned if they were part of a fossil or something...\nIs the Earth sentient?\nAre we all to evolve into rocks someday?\nHow many eons would it take for a rock to decide what to have for dinner?
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Great question!\n\nFish have what we might call the "beginning" of a cortex.  Non-vertebrate chordates do not.  It should be noted that cephlopods have a nervous system that rivals a cortex (certainly surpasses that of fish).
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1. A- mosses- basic, no vascular tissue, reproduction requiires water\nB- Ferns- vascular tissue present\nC- gymnosperms- seeds\nD- angiosperms- flowers and fruits\n\n2. Monocots have one cotyledon, dicots have 2\n\n3. cotyledons are the first leaves that sprout out of the seed, they contain nutrients for hte seed\n\n4. male- stamen, female- pistil\nSeed- sporophyte, fruit- ovary\n\n5. Photosynthesis is the making sugar/energy from CO2 and light\nTakes place in the stem and leaves (wherever green).  or more specifically, in the chloroplasts, in the stroma and thylakoid membrane\n\n6. Vascular tissue are a transport system, carrying water, minerals and sugar up to all parts of the tree\nAdvantages- grow bigger, compare mosses and trees\n\n7. tropism is the plants tendency to grow\nPhototropism- grow towards light.  light slows down cell elongation in stem that it hits, opposite side grows faster\nGravitropism- roots grow downward.  heavy molecules sink, thus coordinating top cells to elongate
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>>>If life was not created by an intelligent, self-aware,\n>>> designer, where did evolution get intelligence and self \n>>>awareness to "give" us?\n\n\nIt got it from a series of mutations and processes selecting for increased intelligence. Intelligence is simply the result of ever increasing ability to process and respond to sensory information. It is no harder to ‘get’ than size. \n\nYou might just as well ask if all organisms evolved from microscopic bacteria, where did evolution get size to give to whales. The difference between whales and bacteria in terms of size is one of degree, not kind. And in exactly the same the difference between a human and a bacterium WRT intelligence is one of degree, not kind.\n\n\n\n>>>>There appear to be three levels of life, plants (having\n>>>> no awareness), animals (having sensory perception), and \n>>>> humans(perceiving self and contemplating all things). \n\nThat quite obviously isn’t true. Anyone who has lived outside a city knows that plants perceive and respond to the passing of the seasons and the timing of the rains.\n\nOnce again I have to stress that the difference between plant intelligence and human intelligence is one of degree, not of kind. It is not the case that plants have one type of intelligence and humans have another. Plants simply have much less intelligence than humans\n\n>>>>Neoteny… How can anything retain something which it has\n>>>> not received? How can anything be received from a\n>>>> source that does not have *that* thing?\n\nI think you need to spend at leats one hour studying this subject before criticising. All animals receive the genetic instructions for their juvenile from their parents.\n\nIt is amazing that someone in the 21st century could actually believe that God personally builds young animals and that the form of a kitten has no genetic basis whatsoever.
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Somehow I doubt it. Amoebas as single-celled organisms do not have brains and therefore no memory -- all they have is what biological reflexes are encoded into their DNA, like aversion to strong light. To teach something a "trick", it has to have the capacity to associate the stimuli with a desired action and remember that one means the other. Doing that without a brain, I think, is nigh well impossible.
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Lol. I did this for homework once. Ok ok ok. I'll help yah out since i'm a pretty cool chickk. I'm not going to spend all day rewording these for you so you're going to have to do that part yourself, k?♥\n\nMitochondria: \nMitochondria are the cells' power sources. They are distinct organelles with two membranes. Usually they are rod-shaped, however they can be round. The outer membrane limits the organelle. The inner membrane is thrown into folds or shelves that project inward. These are called "cristae mitochondriales".\n\nChloroplast:\nA green structure, or organelle, contained in the cytoplasm of plant cells. Chloroplasts are reponsible for the green color of almost all plants and are lacking only in plants that do not make their own food, such as fungi and nongreen parasitic or saprophytic higher plants. The chloroplast is generally flattened and lens-shaped and consists of a body, or stroma, in which are embedded from a few to as many as 50 submicroscopic bodies–the grana–made up of stacked, disklike plates. The chloroplast contains chlorophyll pigments, as well as yellow and orange carotenoid pigments. Chloroplasts are thus the central site of the photosynthetic process in plants. The chloroplasts of algae are simpler than those of higher plants and may contain special, often conspicuous, starch-accumulating structures called pyrenoids.\n\nGolgi Apparatus:\nThe Golgi apparatus (also called a Golgi body, Golgi complex, or dictyosome) is an organelle found in most eukaryotic cells, including those of plants, animals, and fungi. The name comes from Italian anatomist Camillo Golgi, who identified it in 1898. The primary function of the Golgi apparatus is to process proteins targeted to the plasma membrane, lysosomes or endosomes, and those that will be formed from the cell, and sort them within vesicles. Thus, it functions as a central delivery system for the cell. It is part of the endomembrane system.\n\nRough&Smooth Endoplasmic Reticulum:\nThe endoplasmic reticulum or ER (endoplasmic means "within the cytoplasm," reticulum means "little net") is an organelle found in all eukaryotic cells. It is part of the endomembrane system. The ER modifies proteins, makes macromolecules, and transfers substances throughout the cell. Prokaryotic organisms do not have membranous organelles and thus do not have an ER. The basic structure and composition of the ER is similar to the plasma membrane, although it is actually an extension of the nuclear membrane. The ER is the site of the translation, folding, and transport of proteins that are to become part of the cell membrane (e.g., transmembrane receptors and other integral membrane proteins) as well as proteins that are to be secreted or "exocytosed" from the cell (e.g., digestive enzymes).\n\n*The ER consists of an extensive membrane network of tubes and cisternae (sac-like structures) held together by the cytoskeleton.\n\nRough ER:\nThe rough ER, also called granular ER or ergastoplasm (acronyms rER or gER) manufactures and transports proteins destined for membranes and secretion. It is called "rough" because ribosomes present on the cytosolic side of the membrane give it a rough appearance.\n\nSmooth ER:\nThe smooth ER (also known as agranular ER or aER) has functions in several metabolic processes, including synthesis of lipids, metabolism of carbohydrates, and detoxification of drugs and poisons. Enzymes of the smooth ER are important to the synthesis of lipids, including phospholipids and steroids. Among the steroids produced by smooth ER are the sex hormones of vertebrates and the various steroid hormones secreted by the adrenal glands. The cells that actually synthesize and secrete these hormones - in the testes and ovaries, for example - are rich in the smooth ER.\n\nRibosomes:\nRibosomes are responsible for assembling the proteins of the cell. Ribosomal subunits are synthesized by the nucleolus. Depend
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Let me (or wikipedia) tell you about protists.\n\nProtists were traditionally (for the last 150 years) subdivided into several groups based on similarities to the higher kingdoms: the animal-like protozoa, the plant-like algae, and the fungus-like slime molds and water molds. These groups often overlap, and have been replaced by phylogenetic classifications. However, they are still useful as informal groups for describing the morphology and ecology of protists.\n\n\nI don't think scientists have done much for them.
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1.\n\n\n\n\n\n\n2. Viruses are neither unicellular nor multicellular organisms; they are somewhere between being living and non-living. Viruses have genes and show inheritance, but are reliant on host cells to produce new generations of viruses. Many viruses have similarities to complex molecules. Because viruses are dependent on host cells for their replication they are generally not classified as "living". Whether they are "alive", they are obligate parasites, and have no form which can reproduce independently of their host. Like most parasites, they have a specific host range, sometimes specific to one species (or even limited cell types of one species) and sometimes more general.\n\n3. protozoa and algae. I don't know why\n\n4. The protozoa are mostly single-celled, motile, and feed by phagocytosis, though there are numerous exceptions. They are usually only 0.01-0.5 mm in size, generally too small to be seen without a microscope. They are ubiquitous throughout aqueous environments and the soil, commonly surviving dry periods as cysts or spores, and include several important parasites. Based on locomotion, protozoa are grouped into:\n\nFlagellates with long flagella  -like Euglena\nAmoeboids with transient pseudopodia   -like Amoeba\nCiliates with multiple, short cilia    -Paramecium\nSporozoa non-motile parasites; form spores like Plasmodium.\n\n\n\n5. The algae gather light energy through photosynthesis. They include many single-celled creatures that are also considered protozoa, such as Euglena and Paramecium bursaria, which have acquired chloroplasts through secondary endosymbiosis. Others are non-motile, and some are truly multicellular, including some members of the following groups:\nChlorophytes green algae, related to higher plants  -like Ulva\nRhodophytes red algae  -like Porphyra\nHeterokontophytes brown algae, diatoms, etc.  -like Macrocystis\n\nThe green and red algae, along with a small group called the glaucophytes, appear to be close relatives of other plants, and so some authors treat them as Plantae despite their simple organization. Most other types of algae, however, developed separately. They include the haptophytes, cryptomonads, dinoflagellates, euglenids, and chlorarachniophytes, all of which have also been considered protozoans.\n\n\n6.\n\n\n\n\n\n\n7.\n\n\n\n\n\n\n8. hyphae is any of the threadlike filaments forming the mycelium of a fungus. Hyphae is a long, branching filament that, with other hyphae, forms the feeding thallus of a fungus called the mycelium. Hyphae are also found enveloping the gonidia in lichens, making up a large part of their structure. A typical hypha consists of a tubular wall, usually made of chitin, which surrounds, supports, and protects the cells that compose a hypha. For most fungi, a cell within a hyphal filament is separated from other cells by internal cross-walls called septa (singular septum).\n\nSome forms of parasitic fungi have a portion of their hyphae modified to form haustoria that are able to penetrate the tissues of a host organism. Similar, yet mutualistic forms of penetrating hyphae are called mycorrhizae and are important in assisting nutrient and water absorption by plants.\n\n\n\n9. \n\n\n\n\n\n\n\n\n10. Lichen is a fungus, usually of the class Ascomycetes, that grows symbiotically with algae, resulting in a composite organism that characteristically forms a crustlike or branching growth on rocks or tree trunks.
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It would post probably be sunlight.......some plant organisms may survive without water for long periods of time, such as ones in the desert....... but sunlight is required for green plants to make food  which unlike for humans......... food is the bigger priority than water