Question

Y–shaped energy flow models have
(a) Single channel
(b) Two channels
(c) Three channels
(d) None of these

Answer 1

Y-shaped energy flow is more realisitc and practical than the single-channel energy flow model because of following points : (i) It conforms to the basic stratified structure of ecosystems. (ii) It separates the two chains i.e., grazing food chain and detritus food chain in both time and space.

Answer 2

Y shaped energy flow models have two channels.  

Answer: Option b

Explanation:

This is much practical energy flow model than the single channel energy flow model. In this type of energy flow models the living plants and the dead organic matters are separated in time and space.

The macro and the micro consumers are different in their sizes. The grazing and detritus food chains are internally connected to each other in this energy flow model.