The Following Questions Refer to the Description and Table 28

question 8

Multiple Choice

The following questions refer to the description and Table 28.1 below.
Diatoms are encased in Petri-plate-like cases (valves) made of translucent hydrated silica whose thickness can be varied. The material used to store excess calories can also be varied. At certain times, diatoms store excess calories in the form of the liquid polysaccharide, laminarin, and at other times, as oil. Below are data concerning the density (specific gravity) of various components of diatoms, and of their environment.
Table 28.1: Specific Gravities of Materials Relevant to Diatoms
$$\begin{array} { l l } \text { Material } & \text { Specific Gravity } ( \mathrm { kg } / / \mathrm { m }^{3} ) \\\text { Pure water } & 1000 \\\text { Seawater } & 1026 \\\text { Hydrated silica } & 2250 \\\text { Liquid laminarin } & 1500 \\\text { Diatom oil } & 910\end{array}$$
-Which taxon of eukaryotic organisms is thought to be directly ancestral to the plant kingdom?

• A)golden algae
• B)radiolarians
• C)foraminiferans
• D)apicomplexans
• E)green algae

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Definitions:

Scanf()

A function in C programming used to read formatted input from the standard input (keyboard).

Conversion Control Sequences

Patterns in a format string that specify how to convert and format data types for input/output operations.

Scanf()

A function in C programming that allows the reading of formatted input from stdin (standard input stream).

Data Type

A data type is a classification of data which tells the compiler or interpreter how the programmer intends to use the data. This classification determines the types of operations that can be performed on the data.