This week you will start the tree with the three clades: bacteria, archaea, and eukarya. add the following traits to the tree where they appear: ester bonds in cell membranes ether bonds in cell membranes presence of membrane-bound nucleus presence of membrane-bound organelles presence of histones dna as genetic storage presence of peptidoglycan in cell wall include the following species under the correct clade:

b a mature ovary of a plant.

bradykinin is a physiologically and pharmacologically active peptide of the kinin group of proteins, consisting of nine amino acids.

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.