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Plants exhibit indeterminate growth, meaning they do not have a final body form, but continue to grow body mass until they die. Plant sex cells and sex organs are classified using the same system as those of animals. Plants reproduce through a union of two sex cells or gametes of different sizes.
The plant kingdom contains mostly photosynthetic organisms; a few parasitic forms have lost the ability to photosynthesize. The process of photosynthesis uses chlorophyll, which is located in organelles called chloroplasts. Plants possess cell walls containing cellulose.
Kingdom: Plantae, animalia, fungi, protoctista and prokaryotae. Phylum: Groups organisms according to body plan eg backbone. Class: Groups organisms to do with general trait eg number of legs....
- Figure \(\PageIndex{1}\): Alternation of generations between the haploid (1n) gametophyte and diploid (2n) sporophyte is shown. (credit: modification of work by Peter Coxhead)
- Figure \(\PageIndex{2}\): This life cycle of a fern shows alternation of generations with a dominant sporophyte stage. (credit "fern": modification of work by Cory Zanker; credit "gametophyte": modification of work by "Vlmastra"/Wikimedia Commons)
- Figure \(\PageIndex{3}\): This life cycle of a moss shows alternation of generations with a dominant gametophyte stage. (credit: modification of work by Mariana Ruiz Villareal)
- Figure \(\PageIndex{4}\): This apple seedling is an example of a plant in which the apical meristem gives rise to new shoots and root growth.
- A representation of the different types of plants found today. Many produce flowers, plants called Angiosperms, which will give rise to fruits such as berries and nuts.
- The agave plant. During sexual reproduction, the branches of the stalk are covered with masses of yellow flowers. After this time, the “mother” plant will die with the stalk falling and the offspring being dispersed.
- The major divisions of plants.
- The fern life cycle. The adult fern we see growing is the sporophyte at the top of the image, whereas the gametophyte is in the soil and out of view.
Sep 4, 2018 · The plant kingdom is further classified based on the following three criteria: Plant body; Vascular system; Seed formation
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Sep 13, 2024 · Plant - Photosynthesis, Reproduction, Evolution: Plants (kingdom Plantae) are all multicellular and eukaryotic, and most can convert the energy of sunlight into chemical energy by means of photosynthesis; they are autotrophic and store their excess food as starch.