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
-Typically as cells grow, their increase in volume outpaces their increase in surface area, and continued survival requires undergoing asexual reproduction to reestablish a healthy surface area to volume ratio. Thus, which of these is least likely to contribute to the ability of a single-celled foraminiferan to grow to a diameter of several centimeters?
A) Its threadlike pseudopods dramatically increase its surface area to volume ratio.
B) Its symbiotic algae provide oxygen to the cytoplasm.
C) Its symbiotic algae absorb metabolic waste products from the cytoplasm.
D) Its symbiotic algae provide glucose to the cytoplasm.
E) Its calcium carbonate test contributes extra mass.
Correct Answer:
Verified
Q10: Diatoms are mostly asexual members of the
Q25: The next few questions refer to the
Q31: You are given five test tubes, each
Q32: The following questions refer to the
Q33: The following questions refer to the
Q34: You are given five test tubes, each
Q36: The following questions refer to the
Q38: The following questions refer to the
Q39: If one were to apply the most
Q40: The following questions refer to the
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents