Why have the gaps among existing organisms as well as the fossil records remained after hundreds of years of research?
Why have the gaps among existing organisms as well as the fossil records remained after hundreds of years of research? because distinct populations of living things exist due to barriers to reproductive change, because fossils may be classified into distinct taxa due to the persistence of gaps.
When naming a life form which of the following two taxonomic categories is used?
This is a system that uses two names to identify an organism. Specifically, it uses the genus and species names.
What is the most specific level of ecological classification?
Biosphere. It is the highest level of organization. It is the global ecological system which consists of all the living organisms and other factors which supports life.
Which organisms are most closely related?
Answer. Humans, chimpanzees, gorillas, orangutans and their extinct ancestors form a family of organisms known as the Hominidae. Researchers generally agree that among the living animals in this group, humans are most closely related to chimpanzees, judging from comparisons of anatomy and genetics….
Which best describes the first organisms on Earth?
Bacteria have been the very first organisms to live on Earth. They made their appearance 3 billion years ago in the waters of the first oceans. At first, there were only anaerobic heterotrophic bacteria (the primordial atmosphere was virtually oxygen-free).
Which of the following is a group of parasitic flatworms?
Background: The parasitic Platyhelminthes (Neodermata) contains three parasitic groups of flatworms, each having a unique morphology, and life style: Monogenea (primarily ectoparasitic), Trematoda (endoparasitic flukes), and Cestoda (endoparasitic tapeworms)….
Which animal group contains the most species?
Which of the following groups includes both spiders and horseshoe crabs?
Chelicerates include horseshoe crabs, spiders, mites, scorpions and related organisms.
What four characteristics have contributed to the success of arthropods?
What are the four characteristics that have contributed to Arthropod success? Exoskeleton function in Arthropods? Structural support, protection, retards water loss, provides color.
Where are arthropods found?
Some of the more well-known arthropods include insects, crustaceans, and spiders, as well as the fossil trilobites . Arthropods are found in virtually every known marine (ocean-based), freshwater, and terrestrial (land-based) ecosystem, and vary tremendously in their habitats, life histories, and dietary preferences.
Why arthropods are called so?
Arthopod is a word that is derived from a Greek word called Arthropoda. The meaning of Arthopoda is Joint foot. Thus, Arthopods are joint foot invertebrate animals having external skeletons. They don’t have skin, instead they have hard body surfaces i.e., External Skeleton….
What is the meaning of arthropods?
: any of a phylum (Arthropoda) of invertebrate animals (such as insects, arachnids, and crustaceans) that have a segmented body and jointed appendages, a usually chitinous exoskeleton molted at intervals, and a dorsal anterior brain connected to a ventral chain of ganglia.