Answer:
Linnaeus taxonomy
Explanation:
organisms are named and classified based on physical characteristics in linnaean taxonomy Which of the following is the most abundant group of organisms on Earth.
Idk the options but it could be genetic variation
Answer: c) and b) are correct.
The brain is encased in a protective bony or cartilaginous housing in craniates.
The anterior end of the nerve cord is elaborated to form a brain in craniates.
Explanation: The craniates include the chordata with well-defined heads. This includes mammals, reptiles and fishes. So we can discard the other answers. Because most craniates have functional jaws, and the adults do not lose their chordate characteristics. The last one does not apply as a specific feature because the tunicate have neural crest but are not recognized as craniata.
Answer:
in a human 46 chromatids form 23 chromosomes
Explanation:
