Question

You encounter a heterotrophic protist that moves via projections of it's cytoplasmic membrane. This would be classified as a:

1. mastigophoran

2. alga

3. cilliate

4. sarcodine

Question 7

A mold produces a white, fluffy growth on Potato Dextrose Agar, with dark brown specks at the surface. Upon staining with LPCB you see non-septate hyphae and a round sporangium atop a stalk-like sporangiophore. This species is most likely:

		1. Penicillium notatum
		2. Rhizopus stolinifer
		3. Aspergillus niger
		4. Streptomyces griseus

Answer 1

Question 1

Solution- Option 4 Sarcodine

Sarcodines move using cytoplasmic projections called pseudopodia

Mastigophoran and algae move by using flagella. Therefore options 1 and 2 are wrong

Cilliates use cilia for their movement. therefore option 3 is wrong

Question 7

Solution- Option 2  Rhizopus stolinifer

Because, only Rhizopus stolinifer have non-septate hyphae (Coenocytic). Therefore option 2 is the correct answer

• Penicillium notatum and Aspergillus niger produce septate hyphae. Therefore options 1 and 3 are wrong
• Streptomyces griseus is a bacteria. It is not a mold. Therefore option 4 is wrong