The mass of living material at a trophic level at a particular time is called
net primary productivity
standing crop
gross primary productivity
standing state
In a food chain, lion is a
Which of the following food chain may not be directly dependent upon solar energy
The zooplanktonic forms are
Mr. $X $ is eating curd/yoghurt. For this food intake in a food chain he should be considered as occupying
Which of the following in an ecosystem exhibits one-way flow rather than cyclic flow