Which one of the following statements is correct?

Which of the following statements are incorrect based on the Whittaker classification system?
$I.$ Whittaker classified organisms into unicellular and multicellular based on the complexity of cell structure.
$II.$ Whittaker classified organisms as producers,decomposers,and consumers based on their ecological roles.
$III.$ Organisms were divided into unicellular and multicellular based on the complexity of body organization.
$IV.$ Prokaryotic and eukaryotic organisms were divided based on their mode of nutrition.

Which of the following is a true characteristic of the Kingdom Plantae?

Find the incorrect match $-$

Match the columns:

Column-$I$	Column-$II$
$(a)$ Saprotrophs	$(i)$ Organisms that make their own food
$(b)$ Omnivores	$(ii)$ Organisms that feed on dead and decaying matter
$(c)$ Autotrophs	$(iii)$ Organisms that eat both plants and animals
$(d)$ Herbivores	$(iv)$ Organisms that eat only plants

Select the correct option for the matching of scientists and their research:

Scientists	Research
$(1)$ Thallassane	$(a)$ Father of Modern Phycology
$(2)$ Ivanowsky	$(b)$ First discovery of Lichen
$(3)$ Rothmaler	$(c)$ Discovered $TMV$
$(4)$ Prof. Iyengar	$(d)$ Divided Bryophytes into three classes