Question

Pseudopodia in Actinophrys are of this type:

• A. Lobopodia
• B. Filopodia
• C. Reticulopodia
• D. Helioipodia

Hint:

Helioipodia, derived from the Greek words for "sun" and "foot," describe the sun-like appearance of these radiating structures that are typical of heliozoans, a group to which Actinophrys belongs.

Answer 1

The Correct Option is D

To solve the problem, we need to identify the type of pseudopodia in Actinophrys.

1. Understanding Pseudopodia in Actinophrys:
Actinophrys, a type of protozoan, uses pseudopodia for movement and feeding. Pseudopodia are temporary projections of the cell's cytoplasm used for locomotion and capturing food.

2. Analyzing the Options:
(1) Lobopodia: These are blunt, finger-like extensions of the cytoplasm, which are typically seen in amoeba-like organisms, but not characteristic of Actinophrys.
(2) Filopodia: These are thin, thread-like extensions of the cytoplasm and are more characteristic of certain amoebas, but not typically Actinophrys.
(3) Reticulopodia: These are networks of interconnected pseudopodia, seen in some amoeba-like organisms. While Actinophrys does have branching projections, this type is not the correct answer.
(4) Heliopodia: These are star-shaped projections, which is the correct type of pseudopodia found in Actinophrys.

3. Identifying the Correct Answer:
The correct type of pseudopodia in Actinophrys is heliopodia, which are radiating projections that form a star-like shape.

Final Answer:
The correct answer is Option D: Heliopodia.

Answer 2

Understanding Pseudopodia in Actinophrys.
Actinophrys, commonly known as sun animalcules, are a genus of free-living unicellular protists characterized by their radial symmetry and stiff, radiating pseudopodia called helioipodia. These structures are not only used for movement but also play a critical role in capturing and engulfing prey through a process known as phagocytosis.