Consider the Following Data

question 1

Multiple Choice

Consider the following data:
(a) Most ancient eukaryotes are unicellular.(b) All eukaryotes alive today have a nucleus and cytoskeleton.(c) Most ancient eukaryotes lack a cell wall.Which of the following conclusions could reasonably follow the data presented?

• A)The first eukaryote may have been very similar to a plant cell.
• B)The first eukaryote may have been anaerobic.
• C)The first eukaryote may have been capable of phagocytosis.
• D)The first eukaryote may have been photosynthetic.

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Definitions:

Goblet Cells

Goblet cells are specialized epithelial cells found in the respiratory and digestive tracts, secreting mucus to lubricate and protect the mucous membranes.

Tube-Within-a-Tube

A body plan characteristic of many animals, where the inner tube represents the digestive tract and the outer tube the body wall, with a cavity in between.

Body Wall

The outermost layer of an organism's body, which provides structural support and protection; in many invertebrates, it consists of a cuticle or exoskeleton.

Gastrovascular Cavity

A digestive compartment with a single opening found in certain invertebrates, serving both digestive and circulatory functions.