The evolutionary history of a group of organisms especially as depicted in a family tree diagram showing the evolutionary interrelations of a group of organisms
derived from a common ancestral form. The ancestor is in the tree
“trunk”; organisms that have arisen from it are placed at the ends of
tree “branches.” The distance of one group from the other groups
indicates the degree of relationship; i.e., closely related
groups are located on branches close to one another. Phylogenetic trees,
although speculative, provide a convenient method for studying
phylogenetic relationships.
Answer:
Option A, most closely related to mammals
Explanation:
Insects like arthropods and molluscs have an open circulatory system and thus do have a distinguishable heart. Fish has two chambered heart. Reptiles have three chambered heart. Amphibians too have a three chambered heart.
All mammals and fish have four chambered heart. The right and left sides of the chambers have restricted entry and hence remain intact from each other
Hence, option A is correct
Answer:
Option A. can reproduce by budding.
Explanation:
Sponges is a multicellular organism which consists of pores that allows water to move through the body. Sponges belongs to kingdom animalia and phylum porifera. Sponges can reproduce by budding. Sponges are placed in kingdom animalia because they are unable to make their own food, made of more than one cell and absence of cell wall.
Answer:
Low concentration to high concentration
Explanation:
If moving up the concentration gradient, you will start detecting the chemical molecules more and more frequently.
Because in wet climates the limestones break due to the rain, and dry climates do nothing to the limestone.
