Answer:
(d) Kingdom-Monera comprises of single celled prokaryotic
bacteria, filamentous actinomycetes and photosynthetic blue green algae. Since,
they are prokaryotic therefore they do not have membrane bound cell organelles
and a well defined nucleus. The undefined nuclear region is termed as nucleoid.
The organisms of kingdom-Protista are unicellular and
eukaryotic organisms such as unicellular algae, protozoan's and unicellular
fungi. Some of these organism have appendages, such as cilia (e.g., Paramecium)
and flagella (e.g., Euglena). Some of them are autotrophic (synthesize their
own food) like unicellular algae while others are heterotrophic (dependent on
other for food) like protozoan's, The heterotrophic members may be saprophytic
(living on dead matter) or parasitic (living on other organisms).
Robert H Whittaker (1959) proposed the five kingdom
classification considering cell structure, mode and source of nutrition.
The five kingdoms he proposed are
1. Kingdom-Monera 2. Kingdom-Protista
3. Kingdom-Fungi 4. Kingdom-Plantae
5. Kingdom-Animalia
Both Monera and Protista may be either autotrophic or
heterotrophic in nature.
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