Difference between angiosperms and gymnoperms??

Question

explain- include examples please!!

Answer 1

* in angiosperms seed is enclosed in sporophylls which form one or more carpels of the ovary
* in gymnosperms seed is on the surface of the sporophyll
Gymnosperms include plants whose seeds are not enclosed in an ovule, hence why they’re called “naked seeds” (Think of a pine cone). Gymnosperms normally have needles instead of broad leaves. These types of plants are sometimes referred to as “softwoods” and usually stay green throughout the entire year. Examples of those that stay green are spruce trees, firs and pines. It is important to remember that there are exceptions to this, but it is sometimes a good way to distinguish between those that are gymnosperms and those that aren’t. Gymnosperms are NOT flowering plants and commonly occur naturally here in the desert.
Angiosperms include plants whose mature seeds are enclosed in an ovule (think of an apple). This group is sometimes referred to as “hardwood”. Angiosperms usually have broad leaves, and they normally change color and die every autumn, unlike normal gymnosperms. Angiosperms ARE flowering plants and are especially dominant in the Mojave Desert. Oaks, maples and dogwoods are examples of angiosperms.

Answer 2

Angiosperm Vs Gymnosperm

Answer 3

Angiosperms - Plant of a large group (sub division, angiospermae ) that comprises those that have flowers and produce seeds, enclosed within a carpel. Herbaceous plants, shrubs, grasses, and most trees.

Gymnosperms - The plants of the group ( sub division, Gymnospermae ) that comprise those that have seeds unprotected by an ovary or fruit, includes conifers, cycads, etc.,

Answer 4

Chronologically Gymnosperms are first ; so let us start with them .

1 ) GYMNOSPERMS == ( Gymnos = No covering or naked and Spermos == seeds) . These plants are such that they do produce seeds but they have no protecting covering of fruit around them . These are 'naked seed' plants ( And not Naked fruit as some one has mentioned earlier.

These are either trees or shrubby plants but no herbs at all.

These are flowering plants no doubt but since these flower are borne in cone like structures and do not confirm to our idea of flower . It is difficult for a lay man to believe that they are flowering plants.

These are all wind pollinated ( This is one reason why the flowers do not confirm to our idea of flower. )

Xylem elements always show bordered pits .

Mostly their leaves have narrow lamina , hence needle like.

Cycas , Pinus , Gnetum , Juniperus are some examples .

Gymnosperms as a group formed the dominant flora in the Mesozoic Era ( The golden age of Reptiles like dinosaur and gymnosperms )

See Pictures below by clicking on them.

1) Cycas tree -http://www.sci.muni.cz/bot_zahr/fotografie/skleniky/kapradiny/Cycas%20revoluta3.jpg
2)Pinus tree --http://www.ubcbotanicalgarden.org/potd/pinus_ponderosa.jpg
3)Gnetum twig ---http://www.botany.wisc.edu/images/greenhouse/Gnetum-ghs.jpg
4) Juniperus---http://www.magnoliagardensnursery.com/productdescrip/pictures300/Juniperus_BlueRug300.jpg

5) Bordered pits on xylem --http://www.uri.edu/cels/bio/plant_anatomy/images/9A.gif

6 ) Pinus cone --http://www.mntca.org/Reference_manual/Tree_info/Images/Pinaceae/pinus%20ponderosa%20-%20nice%20-%20open%20mature%20cone,%20pollen%20cones,%20new%20ovulate%20cone%20-%205-14-04.jpg

2 ) ANGIOSPERMS -(Angion == a vessel or a container ; Spermos = Seeds ) . In these plants the seeds are always enclosed in a container OR A fruit. So there is seed as well as fruit formation ( This ia the most basic difference between the Gymnosperms and Angiosperms.)

These are Herbs , Shrubs And trees as well .

In Many cases the flowers are attractive as many of them are insect, bird and animal pollination.

Xylem never show bordered pits . But show vessels or tracheae.

They appeared later than the Gymnosperms in Cenzoic era .

Examples are too many to quote.

Hibiscus , periwinkle , rose , Mango , Cherry are a few of them.

See Pictures below--
1) Simple pits --http://www-plb.ucdavis.edu/labs/rost/Tomato/Stems/TLS-simpit.gif

2 ) Hibiscus Flower-http://www.studentsoftheworld.info/sites/country/img/10192_hhhhh.jpg

Answer 5

Gymnosperms And Angiosperms

Answer 6

Angiosperms have their reproductive structures in flowers. The seeds end up in fruits. Examples: sunflower, maple, cactus, corn.

Gymnosperms have their reproductive structures in cones or other non-flower structures. Their seeds end up in those cones or other non-fruit structures. Examples: pine, Ginkgo, fir, spruce

Answer 7

Angiosperms

The flowering plants (also called angiosperms) are the dominant and most familiar group of land plants. The flowering plants and the gymnosperms comprise the two groups of seed plants. The flowering plants are distinguished from other seed plants by a series of apomorphies, or derived characteristics.
Flowers
The flowers of flowering plants are the most remarkable feature distinguishing them from other seed plants. Flowers aided angiosperms by enabling a wider range of evolutionary relationship and broadening the ecological niches open to them, allowing flowering plants to eventually dominate terrestrial ecosystems.
Stamens with 2 pairs of pollen sac
Stamens are much lighter than the corresponding microscopically of gymnosperms and have contributed to the diversification of angiosperms through time with adaptations to specialized pollination syndromes, such as particular pollinators. Stamens have also been modified through time to prevent self-fertilization, again to increase diversity, allowing angiosperms to eventually fill more niches.
Reduced male gametophyte, three cells
The reduced male gametophyte in angiosperms may have evolved to decrease the amount of time from pollination, the pollen grain reaching the female plant, to the fertilization of the ovary. In gymnosperms fertilization can occur up to a year after pollination, while in flowering plants the fertilization process begins very soon after pollination, allowing angiosperms, ultimately, to set seeds sooner and faster than gymnosperms.
Closed carpel enclosing the ovules (carpel or carpels and accessory parts may become the fruit)
The closed carpel of angiosperms also allows adaptations to specialized pollination syndromes and controls to prevent self-fertilization, thereby maintaining increased diversity. Once the ovary is fertilized the carpel and some surrounding tissues develop into a fruit, another opportunity for angiosperms to increase their domination of the terrestrial ecosystem with evolutionary adaptations to dispersal mechanisms.
Reduced female gametophyte, seven cells with eight nuclei
The reduced female gametophyte, like the reduce male gametophyte may be evolutionary adaptations allowing for more rapid seed set, eventually leading to such flowering plant adaptations as annual herbaceous life cycles, allowing the flowering plants to fill even more niches towards their terrestrial domination.
Endosperm
Endosperm formation generally begins after fertilization and before the first division of the zygote. Endosperm is a highly nutritive tissue that can provide food for the developing embryo, the cotyledons, and sometimes for the seedling when it first appears.
These distinguishing characteristics taken together have made the angiosperms the most diverse and numerous land plants and the most commercially important group to humans. The major exception to the dominance of terrestrial ecosystems by flowering plants is the coniferous forest.

Gymnoperms

Gymnosperms (Gymnospermae) are a group of Spermatophyte seed-bearing plants with ovules on the edge or blade of an open sporophyll, the sporophylls usually arranged in cone-like structures. The other major group of seed-bearing plants, the angiosperms, have ovules enclosed in a carpel, a sporophyll with fused margins. The term gymnosperm comes from the Greek word gumnospermos, meaning "naked seeds" and referring to the unenclosed condition of the seeds, as when they are produced they are found naked on the scales of a cone or similar structure.
Gymnosperms are heterosporous, producing microspores that develop into pollen grains and megaspores that are retained in an ovule. After fertilization (joining of the micro- and megaspore), the resulting embryo, along with other cells comprising the ovule, develops into a seed. The seed is a sporophyte resting stage.
Coast Douglas-fir cone
In early classification schemes, the gymnosperms (Gymnospermae) "naked seed" plants were regarded as a "natural" group. However, certain fossil discoveries suggest that the angiosperms evolved from a gymnosperm ancestor, which would make the gymnosperms a paraphyletic group if all extinct taxa are included. Modern cladistics only accepts taxa that are monophyletic, traceable to a common ancestor and inclusive of all descendants of that common ancestor. So, while the term gymnosperm is still widely used for non-angiosperm seed-bearing plants, the plant species once treated as gymnosperms are usually distributed among four groups, which can be given equal rank as divisions within the Kingdom Plantae.
With regard to extant gymnosperms, molecular phylogenies of living taxa have conflicted with morphological datasets with regard to whether they comprise a monophyletic or paraphyletic group with respect to angiosperms. At issue is whether the Gnetophyta are the sister taxon to angiosperms, or whether they are sister to, or nested within, other extant gymnosperms.

Answer 8

This Site Might Help You.

RE:
Difference between angiosperms and gymnoperms??
explain- include examples please!!

Answer 9

I am 11 years old i live in columbia sc 29223 and i go to Dent middle school
https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRvxFJ4SCzybI0DFwZImGTzmQ239SayRMiU7FyDKXCUQ8WvS1TD
that is the url

Answer 10

I will give you one classical difference....Gymnosperms are "naked fruit"...Angiosperms have various forms of covering...consider the pine cone vs. fruit(s)..