structurally, i think dna is present only in mitochondria , not in chloroplast,, also, folding of inner membrane may be other one,.. and functionally i hope u would b knowing, power house and trapping of energy..........
also u tell me if somewhere i have gone wrong,, [email protected]

Both organelles have DNA (mitochondria and chloroplast), so that is a similarity. One difference is that chloroplasts are usually found in plants.
The main role of chloroplasts is to produce energy (in the form of ATP and NADH) using the light energy of the sun.

It is true that both mitocondria and plastids have DNA. It resembles the DNA of Archea, having both intorns and transposoms.
Mithocondria is found in almost every eukaryotec cell on erath(very very very few exceptions). None of the 2 discussed organelles is found in bacteria. Chloroplasts(which is a special kind of plastids, see interconversion of plastids) are found in most autotrophic eukaryotes. As for the role of the organelles:
chloroplasts- dark phase of photosynthesis
mithocondira- Krebs cycle and oxidative phosphorilation within cellular respiration

Regards,
Andrew

"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

structural similarity is that they are both have to parts in chloroplast its the granum and the stoma. in mitochondrion u have the inner part where kreb is involved the the cristae. they both have two parts to handle carbon fixation.my guess.

one of the structural differences is that the cell wall in a plant is made out of fibrous protein,easy to break. our cells walls are made out of globular,other protein and phosolipids making it durable.

functional similarity is that they both need a carbon compound to enter their system, they also both need hydrogen to use high power electons. stating the fact they both are used for cell respiration.

functional differences are easy. chloroplast exhales oxygen while mitochondria inhales it. chloroplast creates gluclose when glycerate phosphate doubles and hydrogen is attached to a receptor. in mito- glucose is consumed. in chloroplast light is used in mito it is not.

rambo wrote:structural similarity is that they are both have to parts in chloroplast its the granum and the stoma. in mitochondrion u have the inner part where kreb is involved the the cristae. they both have two parts to handle carbon fixation.my guess.

Only the chloroplast does carbon fixation, not the mithocondria

one of the structural differences is that the cell wall in a plant is made out of fibrous protein,easy to break. our cells walls are made out of globular,other protein and phosolipids making it durable.

Animal cells do not have cell walls, only bacteria, some archea, plants and some protists have it

stating the fact they both are used for cell respiration.

Correct, with a small addition: the chloroplast only provides the stuff to burn in cell respiration, the mithocondria actually does the reactions

"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter