What is the purpose of an intermediate host for parasite replication? Why have some organisms evolved to use an intermediate host and a definitive host while others just have a definitive host?

Q: Is protist dna in a nucleus unicellular or multicellular? According to the phylogeny presented in…

A: Introduction  Eukaryotes are a group of organisms that possess cells with a nucleus, which is a…

Q: Describe a couple of ways in which normal flora interact symbiotically with their host. – look up…

A: Species interaction is the relationship of organisms and species to each other living in the same…

Q: Which nematode infects the roots of tobacco plant and causes a great reduction in yield?

A: Nematodes or roundworms constitute the phylum Nematoda. They are triploblasts and occur as parasites…

Q: Protists are a group of eukaryotic organisms that are brought together by scientists mostly by…

A: Kingdom Protista is a unicellular eukaryote and reproduces by the fission. The unicellular body…

Q: Which of the following is true about fungi? a) All are procaryotic b) All are multicellular c) All…

A: Dear student, we are authorized to answer one question at a time, since you have not mentioned which…

Q: What are the differences between direct and indirect life cycles? Give two (2) representative…

A: Parasites are the organisms which lives and reproduce inside other organisms known as host.

Q: Select only the true statements about soil bacteriophages ahead:

A: Bacteriophages are special kind of viruses which attack bacteria and hijack their cellular machinery…

Q: a salt water protist is placed in fresh water. Which of the following events would most likely…

A: A saltwater protist is placed into freshwater. Since the protist has a higher salt concentration…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.