The many organisms designated as protists are closely related to bacteria a clad. all unicellular all microscopic highly diverse and not all closely related to one another Solution Ans. Correct option E. All other kingdoms have specific cell wall composition, for example peptidoglycan in Bacteria, cellulose in Plantae, chitin in Fungi and no cell wall in Animalia. Similarly, all eukaryotic kingdoms, except Protista, exhibit specific mode of nutrition, for example, photoautotrophs in Plantae, Saprophytic in Fungi, and heterotrophic in Animalia. The members of this taxa show great variations in their cell wall composition, mode of nutrition, mode of reproduction, etc. Moreover, they exhibit great diversity in their physiology, too. In spite of these diversifications, the member of this taxa share two common features- I. these are eukaryotes, and II. are Unicellular. So, the taxon was framed to include all unicellular eukaryotes, that are even not closely related to each other, and which could not fit in any other eukaryotic kingdoms. Option A: Incorrect: Protists are eukaryotes. Option B. Incorrect: It the taxon consisting of members that may show no immediate evolutionary relationship (a clade is a group of organisms sharing common ancestry). Option C. and D. Incorrect: Bacteria are also unicellular but not placed in this group. Moreover, many members of the group predominantly exist in filamentous forms, colony forms. For example, kelps can be serval meters long, visible by naked eyes..

1. The many organisms designated as protists are closely related to bacteria a clad. all unicellular
all microscopic highly diverse and not all closely related to one another
Solution
Ans. Correct option E.
All other kingdoms have specific cell wall composition, for example peptidoglycan in Bacteria,
cellulose in Plantae, chitin in Fungi and no cell wall in Animalia. Similarly, all eukaryotic
kingdoms, except Protista, exhibit specific mode of nutrition, for example, photoautotrophs in
Plantae, Saprophytic in Fungi, and heterotrophic in Animalia.
The members of this taxa show great variations in their cell wall composition, mode of nutrition,
mode of reproduction, etc. Moreover, they exhibit great diversity in their physiology, too. In
spite of these diversifications, the member of this taxa share two common features-
I. these are eukaryotes, and
II. are Unicellular.
So, the taxon was framed to include all unicellular eukaryotes, that are even not closely related to
each other, and which could not fit in any other eukaryotic kingdoms.
Option A: Incorrect: Protists are eukaryotes.
Option B. Incorrect: It the taxon consisting of members that may show no immediate
evolutionary relationship (a clade is a group of organisms sharing common ancestry).
Option C. and D. Incorrect: Bacteria are also unicellular but not placed in this group. Moreover,
many members of the group predominantly exist in filamentous forms, colony forms. For
example, kelps can be serval meters long, visible by naked eyes.