Plants are autotrophic(auto- self * trophic- feeding)
Photosynthesis (photo-light * synthesis- build up)
- Photosynthesis is the manufacturing of organic compounds primarily carbohydrates (eg glucose) by green plants from carbon dioxide and water using sunlight
- it occurs in the green plants
Word Equation
- carbon dioxide + water ⇨ glucose + oxygen
- glucose is used during respiration and can be stored as starch(insoluble)
- oxygen is used during respiration
Factors affecting the rate of photosynthesis
- temperature
- carbon dioxide
- light
- water
- surface area of leaves
- chloroplast
Limiting factors
process controlled by many factors have its rate determined by a factor which is in shortest supply
- light intensity
- carbon dioxide concentration
- temperature
The internal structure of a Dicotyledonous leaf
cotyledon is a food storing leaf
MICROSCOPIC CROSS SECTION THROUGH A DICOT LEAF
Parts and Functions
- Cuticle
- forms a hard surface on top of the leaf to prevent water loss
- Upper epidermis
- forms a single layer of cells (forms the upper part of the leaf).
- Palisade mesophyll
- cells have plenty of chloroplasts- where most photosynthesis takes place.
- Spongy mesophyll
- cells in this zone are not closely packed together to allow easy movement of gases.
- Stomata
- these are openings mostly found on the lower part of the leaf on land plants that allow gaseous exchange. These are bound in the lower epidermis
- Guard cells
- they control the opening and closure of the stomata.
- Loer epidermis
- forms the lower part of the leaf
- Vascular bundle
- it is made up of xylem vessels and phloem tubes
- Xylem vessels
- transport water and dissolved minerals
- Phloem tubes
- transport the manufactured food
- Chloroplasts
- the green pigments inn a leaf that give leaves their color
How structure of a leaf is adapted to its functions
- Cuticle
- waxy
- transparent
- water impermeable so prevent water loss
- allows light to pass through
- Upper epidermis
-
- transparent
- no intercellular spaces
- it prevents the water loss
- Palisade mesophyll
-
- just below the upper epidermis
- cell longitudinally placed
- closely packed chloroplasts to absorbs much sunlight as possible during photosynthesis
- large vacuole pushes the chloroplasts toward the outer region so they can absorb more light
- Spongy mesophyll
-
- it has intercellular spaces
- the walls are moist
- help in gaseous exchange i.e diffusion of gases
- Guard cells
-
- they regulate the opening and closure of stomata
- help in gaseous exchange
- prevent excessive water loss
- Vascular bundles
-
- transport of water & dissolved minerals and food
33 Comments
zoritoler imol
July 5, 2024certainly like your website but you have to check the spelling on several of your posts. Many of them are rife with spelling problems and I find it very bothersome to tell the truth nevertheless I’ll definitely come back again.
tlovertonet
July 8, 2024wonderful post, very informative. I wonder why the other experts of this sector don’t notice this. You should continue your writing. I’m confident, you have a great readers’ base already!
Elvis Steeb
July 10, 2024I’ve been surfing online more than 3 hours lately, but I never found any attention-grabbing article like yours. It is lovely value sufficient for me. Personally, if all website owners and bloggers made excellent content material as you probably did, the web will be a lot more useful than ever before.
binance
August 9, 2024Your point of view caught my eye and was very interesting. Thanks. I have a question for you.
Cellucare review
August 12, 2024Great blog! I am loving it!! Will be back later to read some more. I am bookmarking your feeds also
Provadent
August 12, 2024Greetings! Very helpful advice on this article! It is the little changes that make the biggest changes. Thanks a lot for sharing!
bestes cbd liquid
August 19, 2024I’ve recently started a blog, the info you offer on this website has helped me tremendously. Thank you for all of your time & work. “The man who fights for his fellow-man is a better man than the one who fights for himself.” by Clarence Darrow.
bonbons cbd
August 19, 2024I like what you guys are up also. Such clever work and reporting! Carry on the superb works guys I have incorporated you guys to my blogroll. I think it will improve the value of my site 🙂
Fitspresso review
August 22, 2024Very interesting subject , thankyou for putting up.
xpe foam production line
August 31, 2024Hiya, I’m really glad I’ve found this info. Today bloggers publish just about gossips and internet and this is actually irritating. A good web site with exciting content, this is what I need. Thanks for keeping this website, I’ll be visiting it. Do you do newsletters? Can’t find it.
luck8
August 31, 2024Very interesting details you have mentioned, thankyou for putting up. “Nothing ever goes away.” by Barry Commoner.
8xbet
August 31, 2024What’s Happening i am new to this, I stumbled upon this I’ve found It absolutely useful and it has helped me out loads. I hope to contribute & aid other users like its helped me. Good job.
79king
September 1, 2024I’ve been surfing on-line greater than three hours as of late, yet I never found any fascinating article like yours. It is beautiful value enough for me. Personally, if all web owners and bloggers made just right content material as you probably did, the net can be much more helpful than ever before.
mu88
September 2, 2024Real excellent information can be found on weblog. “The American temptation is to believe that foreign policy is a subdivision of psychiatry.” by Robert Francis Kennedy.
download lagu
September 2, 2024Wow! Thank you! I constantly wanted to write on my website something like that. Can I include a fragment of your post to my blog?
rajapola
September 2, 2024Howdy! This is my first visit to your blog! We are a group of volunteers and starting a new project in a community in the same niche. Your blog provided us useful information to work on. You have done a outstanding job!
Politikus
September 2, 2024Heya i am for the first time here. I came across this board and I find It really useful & it helped me out a lot. I hope to give something back and aid others like you helped me.
salada de cebola
September 3, 2024Does your site have a contact page? I’m having a tough time locating it but, I’d like to send you an e-mail. I’ve got some recommendations for your blog you might be interested in hearing. Either way, great blog and I look forward to seeing it grow over time.
Dentavim
September 3, 2024Hiya, I’m really glad I’ve found this info. Today bloggers publish just about gossips and internet and this is actually frustrating. A good site with interesting content, this is what I need. Thank you for keeping this web site, I’ll be visiting it. Do you do newsletters? Can’t find it.
libidgel
September 4, 2024Thanks , I have just been searching for information about this subject for ages and yours is the greatest I have discovered till now. But, what about the conclusion? Are you sure about the source?
replica watches
September 4, 2024I’m impressed, I must say. Actually rarely do I encounter a blog that’s both educative and entertaining, and let me tell you, you may have hit the nail on the head. Your idea is excellent; the issue is something that not enough people are talking intelligently about. I am very completely satisfied that I stumbled across this in my search for something referring to this.
len logistik
September 5, 2024Some genuinely nice and useful information on this web site, also I think the style and design contains superb features.
adaruangdimensi.com
September 5, 2024I discovered your blog site on google and check a few of your early posts. Continue to keep up the very good operate. I just additional up your RSS feed to my MSN News Reader. Seeking forward to reading more from you later on!…
acompanhantes navegantes
September 5, 2024Hey there just wanted to give you a brief heads up and let you know a few of the pictures aren’t loading correctly. I’m not sure why but I think its a linking issue. I’ve tried it in two different internet browsers and both show the same outcome.
pool pump installation near me
September 5, 2024This is a topic close to my heart cheers, where are your contact details though?
Pronervium
September 5, 2024Thanks , I’ve recently been searching for info about this topic for ages and yours is the best I’ve discovered till now. But, what about the bottom line? Are you sure about the source?
kobold ai
September 6, 2024It is actually a great and helpful piece of info. I’m glad that you simply shared this useful information with us. Please stay us up to date like this. Thanks for sharing.
alexaslot138
September 6, 2024Thankyou for helping out, good information.
pinjaman peribadi islamik
September 6, 2024Have you ever thought about including a little bit more than just your articles? I mean, what you say is fundamental and all. But think of if you added some great visuals or video clips to give your posts more, “pop”! Your content is excellent but with pics and clips, this blog could definitely be one of the greatest in its niche. Awesome blog!
nsfw character ai
September 6, 2024My brother recommended I would possibly like this website. He was once totally right. This put up truly made my day. You can not believe just how so much time I had spent for this info! Thanks!
Maquiadora no Tucuruvi
September 7, 2024Very interesting info!Perfect just what I was looking for!
top up koin hdi murah
September 7, 2024I like what you guys are up too. Such intelligent work and reporting! Carry on the excellent works guys I have incorporated you guys to my blogroll. I think it’ll improve the value of my web site 🙂
mitosjoker
September 7, 2024Today, I went to the beach with my children. I found a sea shell and gave it to my 4 year old daughter and said “You can hear the ocean if you put this to your ear.” She placed the shell to her ear and screamed. There was a hermit crab inside and it pinched her ear. She never wants to go back! LoL I know this is totally off topic but I had to tell someone!