flora hem in us every mean solar day and are the dominant author of all of the atomic number 8 that we breathe . They provide us and other animals with solid food and many of the other products , such as woodwind instrument , that we use on our day - to - day life . Although they are not the largest kingdom of living organisms , they are the most important . Without plants , all other life would be virtually impossible .
Description
The works kingdom , with over 300,000 different species , is the secondly big realm of life after arthropod . All plants have a few characteristics in uncouth . They are multicelled and autotrophic , think they are adequate to of creating their own intellectual nourishment and are self - sustainable , unlike most living organism . They also have cell walls made of cellulose , a case of starch , that many other life forms do not have . Most plants are dark-green due to chlorophyl , which is where photosynthesis happens .
Evolution
Over 700 million years ago , only aquatic algae and bacterium were able to create their own food . This is when the first simple plant bug out to appear , and 435 million years ago the first industrial plant with simple husk start to appear . It took another 60 million years for plants to spread all over the globe . This is when the complex system of roots , stems and farewell , include vascular tissue paper , appear in works .
Photosynthesis
Photosynthesis is not unique to the industrial plant kingdom ; it also occurs in some type of bacterium . However , works are what we normally relate with the process . Photosynthesis is the cognitive process of creating dim-witted sugars by using light to separate water particle , then combining them with carbon dioxide molecules . The byproduct is oxygen and piddle vapour . This process is the basic building block in the food chemical chain for all living things .
Types
Plants have developed many different forms and strategies for life . mere industrial plant are shout nonvascular plant and admit mosses , hornworts and liverwort that reproduce using spores or else of come . More sophisticated flora such as ferns have a vascular system , but still reproduce with spore . angiosperm are plants that have complex vascular tissue and reproduce by come . These are the common anthesis plants we see all around us . Angiosperms are the most advanced members of the plant realm .
Importance
Plants are the most important group of all living matter on the planet . It is the carbohydrate and starch develop by plant using photosynthesis that render food for all other surviving matter . At the bottom of almost every intellectual nourishment chain are plant life , which use sunlight as their zip source , rather than come energy from eating another living or dead organism . Humans rely on plants for their own food as well as for building material , nutrient for farm animal , and many other use .
References
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