Energy Conversion: Mitochondria and Chloroplasts. ... The membrane-enclosed organelles are mitochondria, which are present in the cells of virtually all eucaryotic organisms (including fungi, animals, and plants), and plastids—most notably chloroplasts—which occur only in plants.
Adaptation, inherited traits that increase an organism's chance of survival, also determine an organism's niche.
Adaptations are features or behaviors exhibited by organisms and are usually common in a population. Adaptations evolve by natural selection and they fit organisms to their environment. Adaptations have functional roles and may be physiological, structural or behavioral. The long necks of giraffes for feeding in the tops of trees, and the long canine teeth of carnivores are examples of adaptation.
No, marsupials are mammals like opossums, kangaroos, wombats, and bandicoots who all have pouches and give birth to live young that are not ready to live in the outside world until later as they are not fully developed. Therefore they live in their mothers pouches until they are mature enough. They mainly live in Australia, New Guinea and America.