{"id":2006,"date":"2023-04-26T10:00:23","date_gmt":"2023-04-26T04:30:23","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=2006"},"modified":"2023-04-27T11:17:08","modified_gmt":"2023-04-27T05:47:08","slug":"main-characteristics-plant-kingdom","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/main-characteristics-plant-kingdom\/","title":{"rendered":"What are the Main Characteristics of the Plant Kingdom"},"content":{"rendered":"
What are the Main Characteristics of the Plant Kingdom<\/strong><\/span><\/h2>\n
Kingdom : Plantae of Plant Kingdom\u00a0<\/strong><\/span><\/p>\n
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Division : Thallophyta (Algae)\u00a0<\/strong><\/span> \nThe plants in this divisions are commonly called algae<\/strong>. The terms \u201cAlgae \u201d was coined by C. Linnaeus which means \u2018sea weeds\u2019. The division is characterized by the following :<\/p>\n
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The division comprises of most primitive and simple plants not differentiated into true roots, true stem and true leaves. Therefore, they are thalloid <\/strong>(thallus-like) and placed under the division-thallophyta<\/strong>.<\/li>\n
They are predominatly aquatic, occur both in marine (sea water) as well as fresh water habitats. However, some are terrestrial and grow in moist places.<\/li>\n
Algal cells possess photosynthesis. Thus, the algae are photoautotrophs.<\/li>\n
Some algae have additional accessory pigments of other colours (such as red, brown, yellow, etc.) and accordingly they have beeen classified into different groups. such as green algae, red algae, brown algae etc.).<\/li>\n
The plants are thalloid (figure). The plant body may be unicellular (Chlamydomonas, Chlorella), colonial (Volvox<\/em>, Hydrodictyon<\/em>), filamentous unbranched (Spirogyra<\/em>, Ulothrix<\/em>), filamentous branched (Chara, Cladophora<\/em>), heterotrichous (Ectocarpus<\/em>) or foliaceous (Laminaria<\/em>, Ulva<\/em>, Fucus<\/em>, Sargassum<\/em>).<\/li>\n
The reproductive organs are unicellular non-jacketed gametangia. The contents of reproductive structure are completely converted into spores or gametes.<\/li>\n
After fertilization, embryo is not formed.<\/li>\n<\/ul>\n
The division Bryophyta<\/strong> (Greek word Bryon<\/em> = <\/strong>moss ; <\/strong>phyton<\/em> = plant) includes the simplest and most primitive non-vascular land plants having an embryo stage in their life cycle.<\/li>\n
The plants are essentially terrestrial but require water at every step in the life cycle. They usually grow in moist and shady places \u2013 on the sides of ditches, ponds, pools, lakes; on the banks of streams; damp soil; wet hills and many other similar habitats. They are called amphibians of the plant kingdom<\/strong>.<\/li>\n
The main plant body is gametophyte<\/strong> (haploid body responsible to produce gametes). It is flat, green thallus and lacks true leaves and roots. Plants are fixed by means of hair-like rhizoids.<\/strong><\/li>\n
The vascular tissues (xylem and phloem) are completely absent.<\/li>\n
Sex organs are multicellular. The male sex organs are antheridia<\/strong> and female sex organs are archegonia.<\/strong><\/li>\n
An embryo<\/strong> is formed upon fertilization. Sporophyte lives as a parasite over gametophyte.<\/li>\n
1 Parallel venation is present in leaf.<\/p>\n<\/td>\n
Reticulate venation is present in leaf.<\/td>\n<\/tr>\n
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2 Embryo consists of only one cotyledon.<\/td>\n
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Embryo consists of<\/p>\n
two cotyledons.<\/p>\n<\/td>\n<\/tr>\n
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3. Example – Maize<\/strong><\/p>\n<\/td>\n
Example – Pea<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"
What are the Main Characteristics of the Plant Kingdom Kingdom : Plantae of Plant Kingdom\u00a0 Division : Thallophyta (Algae)\u00a0 The plants in this divisions are commonly called algae. The terms \u201cAlgae \u201d was coined by C. Linnaeus which means \u2018sea weeds\u2019. The division is characterized by the following : The division comprises of most primitive […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[172],"tags":[791,788,787,789,790,786,792],"yoast_head":"\n
What are the Main Characteristics of the Plant Kingdom - A Plus Topper<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\t\n