Biodiversity, or Biological Diversity, is the sum of all the different species of plants, animals, fungi and microbial organisms that live on Earth, including the various ecosystems in which they live on. Chapter 15: Biodiversity Loss . Rephrased in scientific terms, this is a question about trends in biodiversity: is biodiversity improving (going up) or worsening (going down)? Which of the following orders the levels of biodiversity from one that encompasses the MOST variation in organismal characteristics to one that encompasses the LEAST amount of variation? Privacy Policy3. 2. Large species-rich regions result from many factors including. A) the sum of all plants, animals, and microbes on the planet. Tropical and Subtropical Asia have at least 50,000 while tropical and subtropical Africa has about 35,000. Save. When a tadpole turns into a frog, its tail shrinks and is reabsorbed. Types of Biodiversity. Disclaimer Copyright, Share Your Knowledge These behaviors help them to identify each other as potential partners. Explain with suitable example. Ecosystem diversity: It include all the species and all abiotic factors characteristic of a region. Is this an example of necrosis or apoptosis? BIODIVERSITY IS USUALLY EXPLORED AT THREE LEVELS : 1 GENETIC DIVERSITY 2 SPECIES DIVERSITY 3 ECOSYSTEM DIVERSITY, species biodiversity 47. These species will also look more similar. Thus one can define biodiversity as the degree of variety in nature with regards to biological species. The squirrel family, for example, encompasses chipmunks, prairie dogs, and gray squirrels. Biodiversity is the richness of biological variation. Forming zoo and botanical gardens. And the more closer a species is related to another, the more genetic information the two species will share. It enables the population to adapt to its environment and respond to natural selection. In a natural habitat, living organisms have the opportunity to adapt to different environmental conditions as well as to evolve into a better life form. Welcome to BiologyDiscussion! Importance of Biodiversity. However, only 1.75 million species have been named scientifically to date. But bear in mind that biodiversity is more than just species. It includes the organisation of organisms at many levels ranging from complete ecosystems to the chemical components that form the molecular basis of heredity. 3 years ago. The type and number of plant species that are present in an ecosystem is a good predictor of biodiversity as it tells about the varieties and variation in plant species available in that area. Western and Eastern gray squirrels are great examples in this case. Genetic diversity: Genetic variation within species, both among individuals within single population and among geographically separated populations (2). Biodiversity plays an integral role in the way ecosystems work and in the benefits they provide. These animals share various features such as muscle anatomy, number of teeth, as well as shape and details of the skull. Edit. Vertebrates are animals with backbones. Which of the following is NOT part of overall biodiversity? Will go over topics such as: Biotechnology, Artifical and Natural Selection, Vocabulary, Extinction and Extirpation, Overspecialization, Symbiosis, Genetic Traits (Inheritated and Heritated Characteristics), Asexual and Sexual Reproduction, DNA and the Genetic Code, Genes, Cell Division (Mitosis and Meiosis), and Dominant and Recessive Traits. Types of Biodiversity: (a) Genetic diversity: It is the variation of genes within the species. Uses of Biodiversity Species diversity: It refers to the variety of species within a region. Genes are the bits of biochemical information that partly determine how an organism looks, behaves, and live… living in a wide range of ecosystems.. Species diversity: It refers to the variety of species within a region. Biodiversity Test Review DRAFT. Biodiversity can be conserved in the following ways: In-situ conservation: This method helps in the conservation of biodiversity within the natural habitat of the animals and plants by creating protected areas such as national parks and wildlife sanctuaries. Which of the following best describes biodiversity? Moreover, members of a species share intricate mating behaviors. Moreover, most of them have deoxyribonucleic acid (DNA). When she is not writing, she loves watching sci-fi movies on Netflix. Edit. Biodiversity refers to the variety of life that exists on Earth from very small to giants. An ecosystem can cover a small area, like a pond, or a large area, like an entire forest. There are three levels of biodiversity: 1. The closest relations of an organism are members of its own species. Every animal has the same cell structure as fungi, plants, and some microorganisms. Genetic diversity: It refers to the variation in gene within a species. Biodiversity is not distributed evenly on Earth, and is richer in the tropics. Due to its various benefits, biodiversity needs to be conserved. They all represent threats to biodiversity and are not without risk to human health! Pollutants can actually enter our food chain. There are three levels of biodiversity: However, they diverge and develop distinctive attributes with time, and hence promote biodiversity in their own unique way. Practice these Science MCQs to get good marks in CBSE Class 10 Science Exam 2020. Answer Now and help others. 3 years ago. These variations describe the building blocks of life forms and the types of life forms on Earth. All living creatures and organisms need a place to call home. Spell. Sound Energy: Definition, Examples and Facts, Global Warming is a Real Issue – Reducing Your Carbon Footprint, http://www.environment.gov.au/biodiversity/conservation, Why Do White Rabbits Have Red Eyes? 2. It occurs within a species as well as between species. Ecosystem is made up of both biotic and abiotic components. Test. Which part of the male reproductive system store the sperm? If reflects the number of different organisms and their relative frequencies in an ecological system. Biodiversity of India. The total number of species in the world is about 10 million. She loves writing on topics related to space, environment, chemistry, biology, geology and geography. 71% average accuracy. Biodiversity is the name given to the variety of ecosystems (natural capital), species and genes in the world or in a particular habitat. Members of a species share genes. Biodiversity also includes the genetic information that these organisms contain. And that’s what is referred to as species diversity. Likewise, all mammals are distantly related to vertebrates. Now that we know the different types of biodiversity, let us look at the importance of biodiversity. Group Of Answer Choices A. Habitat Loss Only Affects Community And Ecosystem Diversity B. The different aspects of biodiversity all have a very strong influence on each other. Even when placed in the same environment, eastern and western squirrels don’t mate because they are two different species. Ecosystem Biodiversity. Agricultural biodiversity is a broad term that includes all components of biological diversity of relevance to food and agriculture, and all components of biological diversity that constitute the agricultural ecosystems, also named agro-ecosystems: the variety and variability of animals, plants and micro-organisms, at the genetic, species and ecosystem levels, which are necessary to sustain key functions … STUDY. C) the kinds of trees and other plants in a forest. 2. Biodiversity includes the genetic variability (for which different varieties of spices have appeared in the course of evolution) and diversity of life forms such as plants, animal microbes, etc. Not coincidentally, governments have posed the same question and identified policy goals for trends in biodiversity. Flashcards. D) the kinds of plants and animals in a forest. What are the characters Mendel selected for his experiments on pea plant? But pollution is not limited to these “palpable” pollutants. The closest relations of an organism are members of its own species. Match. Question: Which Of The Following BEST Describes The Levels Of Biodiversity? In situ conservation is advantageous in several ways, including the following: However, in situ conservation is not without a shortcoming. It requires an extensive area, which can be difficult due to increasingly growing demand for space. Conversely, all of Europe has about 11,300 vascular plants. An ecosystem is made up of organisms from several different species living together in an environment and their connections through the flow of nutrients, energy, and matter. No feature of Earth is more complex, dynamic, and varied than the layer of living organisms that occupy its surfaces and its seas, and no feature is experiencing more dramatic change at the hands of humans than this extraordinary, singularly unique feature of Earth. tgilbert10. © 2021 . Biodiversity is commonly identified at three levels. Start studying Chapter 15: Biodiversity Loss. It involves conservation of wild and cultivated species as well as genetic resources. Ex-situ conservation utilizes a wide range of techniques and facilities and it can be accomplished in the following ways: Ex-situ conservation is an excellent way of averting the stresses on living organisms as a result of competition for resources such as food, water, and space. 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