The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats. Which of the following most directly favors the evolution of the latter, more radical, kind of metamorphosis?

#Question id: 10883

#Part-B Specialized Branches in Biotechnology

Ecosystem having a three trophic level in which number of species is given in table

 Total 50 number of link among these trophic levels present. What is value of connectance in ecosystem? 

#Question id: 10884

#Part-B Specialized Branches in Biotechnology

Herbivore ingests plant material with 1000 k j energy form producer and 300 kJ loss as feces waste; additionally herbivore invests 300 k j energy in respiration. What is production efficiency of that herbivore?

#Question id: 10885

#Part-B Specialized Branches in Biotechnology

In a field experiment, autotrophs are provided a 14C-labelled carbon compound for photosynthesis. Radioactivity (14C) levels were then monitored at regular intervals in all the trophic levels. In which ecosystem is the radioactivity likely to be detected in longer time at the higher trophic level?

#Question id: 10886

#Part-B Specialized Branches in Biotechnology

Much greater proportion of energy fixed by autotrophs is transferred to the herbivore level in the open ocean ecosystem than in a forest ecosystem because

#Question id: 10887

#Part-B Specialized Branches in Biotechnology

What is a linkage density of community A and B RESPECTIVELY?

#Question id: 10888

#Part-B Specialized Branches in Biotechnology

Ecologists have applied the top-down model to improve water quality in polluted lakes showing in picture. This approach, called biomanipulation, attempts to prevent algal blooms and eutrophication by altering the density of organism instead of chemical treatment as following