PLEASE HELP! i need to know about plants!?
461465
I will split your question in to two parts viz. 1) Photosynthesis and 2) Stomata; so that you can easily understand it.\n 1) PHOTOSYNTHESIS-: for this function entire middle portion of a leaf contributes, it is called MESOPHYLL in botanical language.(Meso = middle or in between; Phyll = refers to leaf). It is located in between the upper and the lower skin or the epidermis of a leaf (Plural epidermes).\n In most of the leaves the MESOPHYLL is again distinguished it to Upper PALISDE tissue and the Lower SPONGY LAYER.\n Both of them are full of chloroplast and do the function of photosynthesis; but there is a difference.\n The palisade cells are located near the upper epidermis,they are elongated,test tube like in appearence and are placed at right angle to the upper epidermis like upright test tubes.( try to see the meaning of palisade in a good dictionary, it is interesting.). These palisade cells are very closely packed with very little space in between and each of them is literally packed with chloroplasts. That is why a leaf appears greener on its upper surface.Thus, they are ideally located to receive maximum sun light and do maximum photosynthesis.\n\nThe Spongy layer , on the other hand , is located near the lower epidermis of a leaf. The cells are spherical or potato shaped and with lots of intercellular spaces between them. Each cell of this layer contains (comparitively) less or far less number of chloroplasts than the palisade of the same leaf.That is why the same leaf appears pale green on its lower surface.\n This Spongy layer does the function of photosynthesis no doubt ; but it is less in quantity than that of Palisade of the same leaf. This is because it is located rather away from the light source and its main function is to help the leaf in gaseous exchange, that is why there are so many intercellular spaces.( here Photosynthesis is over)... \n\n2) STOMATA (singular stoma) -: These breathing pores are neither IN the palisade layer nor IN the spongy layer. They are a PART of the the two epidermes( upper and lower ).\n If one compares the quantity and the distribution of these stomata of one and the same leaf then they are more on the lower epidermis to help the spongy tissue in gaseous exchange during photosynthesis/respiration.\n On the upper epidermis they are far less in number to reduce or prevent exessive water loss due to transpiration.\nIn many desert plants they are either totally absent from the upper epidermis or located in sunken pits for the same reason.\nI hope you got what you sought. Bye.
193532
Plant cell:\n1. has a cell wall outside plasma membrane.\n2. contains chloroplast\n3. has a single large vacuole\n4. has dictyosomes instead of mitochondria.\n\nAnimal cell:\n1. donot have a cell wall. cytoplasm is surrounded by plasma membrane.\n\n2. lack chloroplast\n3. vacuoles absent. if present they are smaller and more in number.\n4. contain mitochondria which are sites of energy production.
249856
http://plants.usda.gov
55611
Scientific terms for plants (flora) and animals (fauna)
756716
the science dealing with the structure of animals and plants\nthe structure of an animal or plant, or of any of its parts\nhope that helps ya \nim a science nut so anything you need help with let me know heres my email its feliciamarielawrence@yahoo.com \ni want to major in science but for now the army is for me !
71796
This is too vague a question.  One really needs to know what type of plant or something to give a good answer.  Not all plants grow at the same rate anyway.  Plants at different ages do not grow the same either.
322387
You may want to check out a great book called "The Variety of Life," by Collen Trudge.  He gives a great overview of the evolution and relationship of plants (as well as all other life).\n\nThere is so much to go over when you are asking about all plants as you are (that's why the first answer probably seems a little confusing).  You may also feel free to email me with questions - the evolution of plants is a great interest of mine (I only have a Bachelors degree in Botany, but I'm sure I can help).\n\nThe plant kingdom is divided into two sub-kingdoms (all these groupings and divisions should reflect their evolutionary lineage) trachaeophytes (most plants that you think of) and bryophytes (mosses, liverworts and hornworts).\n\nThe tracheophytes are then divided into about 21 "phylums" (usually called "divisions" in botany) some living, some extinct.\n\nThe largest division is the angiosperms (flowering plants), which are then divided into (mostly) monocots and dicots.\n\nGymnosperms is kind of a false grouping.  It includes divisions such as conifers, ginkos, cycads, gnetophytes, and other extinct divisions.  Really, they are no more closely related to one-another than they are to flowering plants.\n\nIf you have further questions, add details to your question, I will check back.  Or just write to me.
60753
What particular plant are you looking for?  \n\nA listing of endangered species is located here: \nhttp://www.fws.gov/endangered/wildlife.html#Species\nChoose a few plant species and Google image search.\n\nHere are a few links to images of endangered plants to get you started:\nRaven's Manzanita: \nhttp://www.nps.gov/goga/prsf/nathist1/nathist/images/ravmanz1.jpg\nSilversword:\nhttp://www.maui-kids.com/images/silversword.jpg\nOkeechobee http://www.sfwmd.gov/org/oee/vcd/photos/hires/img0374.jpgGourd:\nHope this helps!
24807
http://www.google.com/search?hl=en&q=flower+species
69117
this depends on the plant...different plants have VERY different requirements!
345105
Take a basic taxonomy class that is local to your area.  I'm sorry to say this but the only way to do it is to get out there and practice, practice.  Look at herbarium specimens, go through the keys and keep trying.\n\nYou'll learn to focus on plant family characteristics and then start to know them by genera.\n\nI've been doing this for 15 years in Colorado and I'm just now getting to the point where it's less common for me to come across a plant that I don't know.
1164941
The variety of plant life is astonishing, and studying it could lead to many different areas.  Botany is the science covering the study of the biology of plants.  Biochemistry would be the chemical reactions occurring in living organisms.\n\nGermination is the term used to describe the emergence of the plant from its seed.  It is controlled by chemical processes that allow the seed to determine when is the best time to emerge.   Moisture, temperature, light and darkness and other conditions control seed germination.\n\nPlant physiology is the study of the life processes of plants.\n\nThe molecule that carries the code of the plant, is known as DNA.\n\nHere are two links to start your exploration of this wondrous, awe-inspiring subject.
1097506
Look in the plant plot!!
762625
you could do something like, the effects of pollutants on soil, then to show your experiment try growing plants in different types of soil, have one with normal soil, your control, then others with different pollutants, oil, chemicals, garbage\nHopefully this could help
962017
In order to answer this question I would neet to know the species that you are talking about.  each family of plants have diffent needs of micro suppliments.  If you want to know the base information of any plant I suggest the NRCS homepage.  you can go to their datbase and find a record of any plant that is out there.
24977
Yeah, that's good.  You could grow some type of plant in each and compare the results.  Some advice - you might want to specify your experiment a bit.  For example, a similar idea is to see whether potatoes grow without soil.  See the third site below.\n\nCheck out these sites.\n\nScience fair projects involving photosynthesis\nhttp://photoscience.la.asu.edu/photosyn/education/sciencefair.html\n\nAgricultural ideas for science fair projects\nhttp://www.ars.usda.gov/is/kids/fair/ideas.htm\n\nScience Fair Central\nhttp://school.discovery.com/sciencefaircentral/scifairstudio/ideas.html
339782
This exlpains it all!\n\nhttp://www.gardenschool.net/pages/Comparison.html