Question

1. match the letters pictured to the correct structures: i. (a. amoeba, e. euglena, v. volvox, p. paramecium)i. colony ii. offspring iii. contractile vacuole iv. nucleus v. chloroplast vi. cell membranevii. eyespot viii. flagellaa. ____b. __c. __d. __e. __f. __g. __h. __name the organismi. ____

Explanation:

• A: The dark, large structure in the amoeba-like cell is the control center (nucleus).
• B: The outer layer of the right organism is the cell membrane.
• C: The small, light-sensitive structure in Euglena is the eyespot.
• D: The whip-like appendage for movement is a flagellum.
• E: The green, oval structures in the left cell are chloroplasts for photosynthesis.
• F: The large, central dark structure in Euglena is its nucleus.
• G: The structure that expels excess water is the contractile vacuole.
• H: The green structures in Euglena are chloroplasts.
• I: The right organism has flagella, an eyespot, and chloroplasts, which are key features of Euglena. The left organism is an amoeba, but the labeled structure I refers to the right organism.

Answer:

A. IV. Nucleus
B. VI. Cell Membrane
C. VII. Eyespot
D. VIII. Flagella
E. V. Chloroplast
F. IV. Nucleus
G. III. Contractile Vacuole
H. V. Chloroplast
I. E. Euglena