Question

Choose the appropriate headings for the classification shown below.

$\begin{array}{c}\text{X}\\ \text{Spongilla}\\ \text{Sycon}\end{array}\begin{array}{c}\text{Y}\\ \text{Euglena}\\ \text{Paramecium}\end{array}\begin{array}{c}\text{Z}\\ \text{Moss}\\ \text{Fern}\end{array}$

• A. X-Plantae, Y-Protista, Z-Plantae
• B. X-Protista, Y-Animalia, Z-Plantae
• C. X-Animalia, Y-Plantae, Z-Protista
• D. X-Animalia, Y-Protista, Z-Plantae

Answer 1

The correct option is D X-Animalia, Y-Protista, Z-Plantae

X- Kingdom Animalia:
$\bullet$ Kingdom Animalia consists of all organisms which are multicellular, eukaryotic and lack cell walls.
$\bullet$ They have heterotrophic mode of nutrition.
$\bullet$ Poriferans are the most primitive forms of animals. They are non-motile organisms attached to a solid support.
Eg., Sycon, spongilla, euplectella, etc.

Y- Kingdom Protista:
$\bullet$ They are simple, unicellular, eukaryotic organisms with autotrophic or heterotrophic mode of nutrition.
$\bullet$ Most of the protists live in water, some in moist soil and some live as parasites in humans and plants.
Eg., Euglena, Paramecium, etc.

Z- Kingdom Plantae:
$\bullet$ They are multicellular eukaryotes with a cell wall.
$\bullet$ Plants also have a green coloured pigment called chlorophyll that is needed for photosynthesis.
$\bullet$ They have an autotrophic mode of nutrition.
Eg., Ferns, mosses, pine, cycas, etc.