Jul 05, 2019 · Question 2 3.2 out of 3.2 points The vast diversity of living things, and their structural complexity are two reasons why Selected Answer: the …
At the broadest most encompassing level, we have ecosystem diversity. As Leopold clearly understood, the “cogs and wheels” include not only life but also the land, sea, and air that support life. In ecosystem diversity, biologists look at the many types of functional units formed by living communities interacting with their environments.
May 23, 2019 · 5/21/2019 Review Test Submission: Quiz 1 – 201930 Summer 2019 BIOL... 2/5 Question 3 Selected Answer: The vast diversity of living things, and their structural complexity are two reasons why the term “life” is impossible to de±ne precisely. Question 4 Selected Answer: A source of information and a source of energy are required in order for an organism to grow.
May 16, 2020 · Question 16 3.2 out of 3.2 points The vast diversity of living things, and their structural complexity are two reasons why Selected Answer: the term “life” is impossible to define precisely. Selected Answer : the term “ life ” is impossible to define precisely .
The level just broader is species diversity, which best fits the literal translation of biodiversity: the number of different species in a particular ecosystem or on Earth.
In ecosystem diversity, biologists look at the many types of functional units formed by living communities interacting with their environments.
The long isolation of Australia over much of the last 50 million years and its northward movement have led to the evolution of a distinct biota. Significant features of Australia’s biological diversity include: 1 A high percentage of endemic species (that is, they occur nowhere else):#N#over 80% of flowering plants#N#over 80% of land mammals#N#88% of reptiles#N#45% of birds#N#92% of frogs 2 Wildlife groups of great richness. Australia has an exceptional diversity of lizards in the arid zone, many ground orchids, and a total invertebrate fauna estimated at 200,000 species with more than 4,000 different species of ants alone. Marsupials and monotremes collectively account for about 56% of native terrestrial mammals in Australia. 3 Wildlife of major evolutionary importance. For example, Australia has 12 of the 19 known families of primitive flowering plants, two of which occur nowhere else. Some species, such as the Queensland lungfish and peripatus, have remained relatively unchanged for hundreds of millions of years.
Literally, the word biodiversity means the many different kinds ( diversity) of life ( bio -), or the number of species in a particular area. Biologists, however, are always alert to levels of organization, and have identified three unique measures of life’s variation: The most precise and specific measure of biodiversity is genetic diversity ...
Leopold —often considered the father of modern ecology—would have likely found the term biodiversity an appropriate description of his “cogs and wheels,” even though idea did not become a vital component of biology until nearly 40 years after his death in 1948. Literally, the word biodiversity means the many different kinds ( diversity) ...
Perhaps most importantly, biological diversity provides and maintains a wide array of ecological “services.”.
Biological diversity is constantly changing. It is increased by new genetic variation and reduced by extinction and habitat degradation.
Living things can be organized into levels from small to large as follows: organelles, cells, tissues, organs, organ systems, organism, population, community, ecosystem, and biosphere.
All living things are made of cells; the cell itself is the smallest fundamental unit of structure and function in living organisms. (This requirement is why viruses are not considered living: they are not made of cells. To make new viruses, they have to invade and hijack the reproductive mechanism of a living cell;
The atom is the smallest and most fundamental unit of matter. It consists of a nucleus surrounded by electrons. Atoms form molecules. A molecule is a chemical structure consisting of at least two atoms held together by one or more chemical bonds.
To make new viruses, they have to invade and hijack the reproductive mechanism of a living cell; only then can they obtain the materials they need to reproduce.) Some organisms consist of a single cell and others are multicellular. Cells are classified as prokaryotic or eukaryotic.
Examples of organelles include mitochondria and chloroplasts, which carry out indispensable functions: mitochondria produce energy to power the cell, while chloroplasts enable green plants to utilize the energy in sunlight to make sugars. All living things are made of cells; the cell itself is the smallest fundamental unit ...
Organisms are individual living entities. For example, each tree in a forest is an organism. Single-celled prokaryotes and single-celled eukaryotes are also considered organisms and are typically referred to as microorganisms. All the individuals of a species living within a specific area are collectively called a population.
In larger organisms, cells combine to make tissues, which are groups of similar cells carrying out similar or related functions. Organs are collections of tissues grouped together performing a common function. Organs are present not only in animals but also in plants.