Answer:
Vacuole, in biology, a space within a cell that is empty of cytoplasm, lined with a membrane, and filled with fluid. Especially in protozoa , vacuoles are cytoplasmic organs (organelles), performing functions such as storage, ingestion, digestion, excretion, and expulsion of excess water.Explanation:
Answer: The correct answer is- bone structure of the baleen whale and the hummingbird share common ancestor.
Bone structure of the baleen whale and the hummingbird are the homologous organs.
Homologous organs can be described as the organs of different animals, which possess same basic structure but perform different functions.
For example- The flippers of a whale and forelimb of man, bone structure of the baleen whale and the hummingbird.
Baleen Whales and hummingbirds have a basic tetrapod skeletons, which is inherited from a common ancestor. But their bodies have been modified and they have lost parts through natural selection. This results in different adaptation in the form of their respective lifestyles over many years.
Osmosis is the movement of solvent particles
Diffusion is the movement of particles from an area of higher concentration to lower concentration
Answer;
Natural selection
Explanation;
-Natural selection is one of the basic mechanisms of evolution, along with mutation, migration, and genetic drift.Genetic diversity allows the different organisms to have different physiological characteristics. Some of them provides them with genetic resistance, others don’t. The ones which are resistant survive the pesticide, others don’t ; this is known as natural selection.
-Those that are resistant will live longer and have a larger number of offspring (reproductive success). From one generation to another, there will be more and more resistant pests (because of their larger offspring), and less and less pests that are not resistant (because they tend to die young). If the selection process goes on, someday the pesticide will be useless (it will kill no pest).
H.225 is the protocol that handles
call or videoconference signaling. H<span>.225.0 is a key protocol in the H.323
VoIP architecture defined by ITU-T. H.225.0 describes how audio, video, data
and control information on a packet based network can be managed to provide
conversational services in H.323 equipment by Vangie Beal.</span>
