T30 q24 transfer of energy is always unidirectional from one trophic level to another .
Food chain and food webs are theoretical concepts of understanding energy transfers across different organisms,and w.r.t food chain(theoritical definition) it is unidirectional. Whereas a food web may incorporate multiple energy pyramids( both deutrius and grazing) which could have multidirectional energy flow interlinked with each other.
SFG batch 2 test 30
Question number 17
Ephernerals are free from any xerophilous adaptations. Also, the species which survive dry season are called rain perennials ajd not Ephernerals.
Ofcourse you're right, ephernerals are free from xerophilous adaptations even the option/question never says that they've xerophilous adaptations. Moreover it's not necessary that rain perennials survive dry season only, they may survive snow or other unfavourable climatic conditions too and bloom only during favourable rainy season.
