The lentic ecosystem includes

Classify the following ecosystems into their appropriate groups:
$I-$ Forest,$II-$ Grassland,$III-$ Pond,$IV-$ Desert
$V-$ Lake,$VI-$ Wetland,$VII-$ River,$VIII-$ Estuary
Terrestrial Ecosystem $\quad$ Aquatic Ecosystem

Among bryophytes,lichens,and ferns,which one is a pioneer species in a xeric succession?

$A$ trophic level is formed by ...........

Each trophic level has a certain mass of living material at a particular time,which is known as $..........$.

In a biotic community,primary consumers are