B. Consumers produce Co2 for which plants need to allow photosynthesis to turn back into oxygen.
A derived character refers to a particular character that is shared by members of a particular population. Genes are considered to be derived characters because THEY ARE TRANSFER FROM GENERATION TO GENERATION FROM PARENTS TO THEIR OFFSPRING. Genes are derived from the DNA molecule of the parents and these are passed to their offspring during the process of cell division in reproduction.
Cos they dont have vascular structure that can defeat gravity and transport water and minerals