Choose the right sequence of hydrarch succession from the following:

Match Column I with Column II and select the correct option from the given codes.

	Column I		Column II
$\left(\mathrm{a}\right)$	Gross primary productivity	$\left(\mathrm{i}\right)$	Self-sustainable ecosystem
$\left(\mathrm{b}\right)$	Net primary productivity	$\left(\mathrm{i}\mathrm{i}\right)$	Aquatic ecosystem
$\left(\mathrm{c}\right)$	Pond	$\left(\mathrm{i}\mathrm{i}\mathrm{i}\right)$	O2 requiring process
$\left(\mathrm{d}\right)$	Aquarium	$\left(\mathrm{i}\mathrm{v}\right)$	Photosynthetic production
$\left(\mathrm{e}\right)$	Decomposition	$\left(\mathrm{v}\right)$	Available to secondary consumers

Given food web contains some missing organisms, (1), (2), (3) and (4). Identify these organisms and select the correct answer.

Read the given statements and select the correct option.
Statement 1: Herbivores are also called as first order consumers.
Statement 2: Herbivores obtain their food directly from plants.