Question

The presence of cilia, an oral groove and food vacuoles, and the absence of chloroplasts in a unicellular organism indicate that the organism carries no

a) Flagella
b) Mitochondria
c) Photosynthesis
d) Respiration

Answer 1

The presence of cilia, an oral groove, and food vacuoles in a unicellular organism with no chloroplasts indicates an incapability to perform photosynthesis.

Step-by-step explanation:

The presence of cilia, an oral groove, and food vacuoles, as well as the absence of chloroplasts, in a unicellular organism, points to a certain set of characteristics. These structures and organelles suggest that the organism is likely to be a eukaryotic protist, such as a paramecium. One function that the organism definitely does not carry out is photosynthesis, due to the absence of chloroplasts which are essential for this process. Cilia aid in feeding and movement, and though the organism does not perform photosynthesis, this does not mean it lacks mitochondria or does not undergo respiration. Moreover, the absence of chloroplasts does not necessarily indicate that flagella are absent since a protist could have both cilia and flagella for different functions.