what outdoor plants including trees & shrubs give off the most oxygen?

Answer 1

C4 plants will give off the most oxygen per volume of plant. In general,
a plant will generate one mole of oxygen per mole of carbon dioxide that is
taken up during photosynthesis. This ratio is a function of photosynthetic
rate and leaf structure and orientation. The former is dependent upon
light, temperature, and water status. Leaf structure, among other things,
refers to leaf thickness, chloroplast number and chloroplast orientation.
It is difficult to pinpoint a specific plant because photosynthetic rate
is adaptive to the plant's particular environment. Chloroplast number and
orientation are also adaptive. C4 plants are the most likely candidates for
higher oxygen generation because, in general, they are the most efficient
at carbon dioxide uptake and photosynthesis.

As you are probably aware, C4 plants include wheat, maize, and many
subtropical shrubs and low-lying plants within a semi-arid type of
environment.

That's an interesting question. If you want the individual plant that gives off the most oxygen each year, it is probably the 43 hectare (106 acre) network of quaking aspen tree trunks ( Populus tremuloides) in Utah that the Guinness Book of World Records lists as the world's largest living organism. The mass of the quaking aspen is estimated at 6 million kg (6,600 tons). The quaking aspen is considered a single organism because all the stems originate from one root system. There was an article in Discover magazine several years ago on the world record quaking aspen.

In terms of the most oxygen produced per unit ground area covered by a single plant species, it would be a tropical grass or other species with C-4 photosynthesis, such as cultivated corn ( Zea mays). For natural ecosystems per unit ground area, tropical rain forests generally have the highest annual rates of photosynthesis.

Reference

Salisbury, F.B. and Ross, C.W. 1985. Plant Physiology. Belmont, CA: Wadsworth Publishing.

Answer 2

Vines give off about 8 times as much oxygen as trees and shrubs.

Answer 3

Earth timber have developed in Earthlike situations for a lengthy time period. in case you plant a tree on Mars, it is going to die. The soil has pollution in it, and a diverse distribution of nutrition. The temperatures are chilly, to which maximum plantlife should be incapable of boost... at best, it ought to proceed to be dormant permenently if all different factors were conductive to tree existence... yet they don't look to be. Mars' has an extremely skinny surroundings, there would not be adequate CO_2 for the timber to live on. a lot less image voltaic radiation received ought to intend those timber ought to opt to be genetically adapted to diminish degrees of image voltaic for photosynthesis to take position. and clearly, the authentic kick contained in the butt... Mars lacks a magnetosphere and an ozone layer. the following on earth, maximum lifeforms ought to perish with out one, or the different, or both. On Mars, the UV radiation ought to tarnish DNA molecules... something organic and organic in compound ought to visit pot because of the radiation, because of the shortcoming of protection that the Martian surroundings gives you. (part word) There are some extremeophile bacteria the following on earth that ought to probably live on Mars-like situations. maximum 'terraforming' proponents decide on to apply those, alongside with some species of algae to do what you propose... regardless of the indisputable fact that the topic matters proceed even previous that...

Answer 4

Bamboo. It has 60 times the biomass as a tree taking up the same space.

Answer 5

I would suspect the big ones. Old-growth fir, cedar, redwood, spruce - they can grow to 300 ft. +

Old Maple, Oak, probably up there...

Also old-growth tropical rainforest. (I don't know tropical trees names). Probably also Banyan trees, since a single tree can cover acres.

Any tree with a large surface area probably exudes a lot of O2.

Answer 6

N.A.S.A. at one time was going to use algae for deep space travel.