Search
- https://bio.libretexts.org/Workbench/General_Ecology_Ecology/Chapter_8%3A_Life_Histories/2%3A_Life_History_EvolutionThe content for this subtopic is found in an external page. Please click the link below to access this information. Life History Evolution Fabian, D. & Flatt, T. (2012) Life History Evolution. Nature ...The content for this subtopic is found in an external page. Please click the link below to access this information. Life History Evolution Fabian, D. & Flatt, T. (2012) Life History Evolution. Nature Education Knowledge 3(10):24
- https://bio.libretexts.org/Courses/Gettysburg_College/01%3A_Ecology_for_All/08%3A_Life_Histories/8.02%3A_Semelparity_versus_IteroparityOne class of models that tries to explain the differential evolution of semelparity and iteroparity examines the shape of the trade-off between offspring produced and offspring forgone (offspring that...One class of models that tries to explain the differential evolution of semelparity and iteroparity examines the shape of the trade-off between offspring produced and offspring forgone (offspring that will not be produced). In the first graph, the marginal cost of offspring produced is decreasing (each additional offspring is less "expensive" than the average of all previous offspring) and the marginal cost of offspring forgone is increasing.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/16%3A_The_Anatomy_and_Physiology_of_Plants/16.04%3A_Plant_Development_-_Fundamentals/16.4A%3A_Plant_GrowthThis page explains that plant growth occurs mainly at meristems through rapid cell division, particularly in stems where the apical meristem at the shoot apex contributes to elongation and leaf produc...This page explains that plant growth occurs mainly at meristems through rapid cell division, particularly in stems where the apical meristem at the shoot apex contributes to elongation and leaf production. Lateral buds generate new branches, and under certain conditions, the apical meristem may develop into a flower bud, stopping further stem growth.
- https://bio.libretexts.org/Workbench/Principles_of_the_Human_Body/1%3A_The_Nature_and_Process_of_Science/1.2%3A_Themes_and_Concepts_of_BiologyFrom its earliest beginnings, biology has wrestled with three questions: What are the shared properties that make something “alive”? And once we know something is alive, how do we find meaningful leve...From its earliest beginnings, biology has wrestled with three questions: What are the shared properties that make something “alive”? And once we know something is alive, how do we find meaningful levels of organization in its structure? And, finally, when faced with the remarkable diversity of life, how do we organize the different kinds of organisms so that we can better understand them? As new organisms are discovered every day, biologists continue to seek answers to these and other questions.
- https://bio.libretexts.org/Workbench/General_Ecology_Ecology/Chapter_8%3A_Life_Histories/4%3A_Semelparity_versus_IteroparityIn this situation, the organism only devotes a portion of its resources to reproduction, and uses the rest of its resources on growth and survivorship so that it can reproduce again in the future [6] ...In this situation, the organism only devotes a portion of its resources to reproduction, and uses the rest of its resources on growth and survivorship so that it can reproduce again in the future [6] . However, it is also possible (second graph) for the marginal cost of offspring produced to increase, and for the marginal cost of offspring forgone to decrease.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/16%3A_The_Anatomy_and_Physiology_of_Plants/16.02%3A_Plant_Physiology/16.2F%3A_TropismsThis page explains tropisms in plants, which are growth movements influenced by external stimuli. There are positive (toward the stimulus) and negative (away from the stimulus) tropisms, with key type...This page explains tropisms in plants, which are growth movements influenced by external stimuli. There are positive (toward the stimulus) and negative (away from the stimulus) tropisms, with key types being phototropism (light) and gravitropism (gravity). Stems grow towards light (positively phototropic) and away from gravity (negatively gravitropic), while roots do the opposite.
- https://bio.libretexts.org/Courses/Gettysburg_College/01%3A_Ecology_for_All/08%3A_Life_Histories/8.01%3A_What_is_life_historyOptimality is important for the study of life history theory because it serves as the basis for many of the models used, which work from the assumption that natural selection, as it works on a life hi...Optimality is important for the study of life history theory because it serves as the basis for many of the models used, which work from the assumption that natural selection, as it works on a life history traits, is moving towards the most optimal group of traits and use of energy (Stearns, 1976).
- https://bio.libretexts.org/Courses/Thompson_Rivers_University/Principles_of_Biology_II_OL_ed/01%3A_Biology_Science_and_Society/1.02%3A_Themes_and_Concepts_of_BiologyFrom its earliest beginnings, biology has wrestled with three questions: What are the shared properties that make something “alive”? And once we know something is alive, how do we find meaningful leve...From its earliest beginnings, biology has wrestled with three questions: What are the shared properties that make something “alive”? And once we know something is alive, how do we find meaningful levels of organization in its structure? And, finally, when faced with the remarkable diversity of life, how do we organize the different kinds of organisms so that we can better understand them? As new organisms are discovered every day, biologists continue to seek answers to these and other questions.
- https://bio.libretexts.org/Workbench/General_Biology_I_and_II/01%3A_Unit_I-Biology_Science_and_the_Chemistry_of_Life/1.01%3A_The_Study_of_Life/1.1.1%3A_Themes_and_Concepts_of_BiologyFrom its earliest beginnings, biology has wrestled with three questions: What are the shared properties that make something “alive”? And once we know something is alive, how do we find meaningful leve...From its earliest beginnings, biology has wrestled with three questions: What are the shared properties that make something “alive”? And once we know something is alive, how do we find meaningful levels of organization in its structure? And, finally, when faced with the remarkable diversity of life, how do we organize the different kinds of organisms so that we can better understand them? As new organisms are discovered every day, biologists continue to seek answers to these and other questions.
- https://bio.libretexts.org/Courses/Gettysburg_College/01%3A_Ecology_for_All/08%3A_Life_Histories/8.03%3A_Life_History_EvolutionThe content for this subtopic is found in an external page. Please click the link below to access this information. Life History Evolution Fabian, D. & Flatt, T. (2012). Life History Evolution. Nature...The content for this subtopic is found in an external page. Please click the link below to access this information. Life History Evolution Fabian, D. & Flatt, T. (2012). Life History Evolution. Nature Education Knowledge, 3(10):24
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/03%3A_The_Cellular_Basis_of_Life/3.19%3A_Plant_TissuesThis page explains the differentiated tissues of mature vascular plants, including meristematic, protective, parenchyma, sclerenchyma, collenchyma, xylem, and phloem. Meristematic tissue is responsibl...This page explains the differentiated tissues of mature vascular plants, including meristematic, protective, parenchyma, sclerenchyma, collenchyma, xylem, and phloem. Meristematic tissue is responsible for growth, while protective tissue covers surfaces. Parenchyma stores and aids in photosynthesis, sclerenchyma offers mechanical support, and collenchyma reinforces growth areas. Xylem transports water and minerals, and phloem carries sugars and amino acids, aided by companion cells.
