Expert: David Haas - 7/10/2007

Question
(1) How does methylcellulose affect the movement of Chlamydomonas?
(2) How does the stigma help Chlamydomonas survive?
(3) Under what environmental conditions would a zygote not undergo meiosis immediately?
(4) How dou you think Spirogyra reproduces asexually?
(5) How is Cladophora morphologically similar to Spirogyra? How is it different? What is the shape of its chloroplasts?

Any help in these is appreciated. Thank You.

Answer
(1) How does methylcellulose affect the movement of Chlamydomonas?  SLOWS MOVEMENT.

(2) How does the stigma help Chlamydomonas survive?  IT CAN DETECT LIGHT. THE ORGANISM IS PHOTOSYNTHETIC


(3) Under what environmental conditions would a zygote not undergo meiosis immediately? NOT SURE.  HARSH, DRYING?  IF THE ORGANISM HAS A GAMETIC LIFE CYCLE?

(4) How dou you think Spirogyra reproduces asexually? CONJUGATION


(5) How is Cladophora morphologically similar to Spirogyra? THEY HAVE CHLOROPLASTS?  How is it different? NEED TO LOOK UP CLADOPHORA. What is the shape of its chloroplasts? SPIROGYRA IS SPIRAL SHAPED. DON'T KNOW ABOUT CLADOPHORA. USE GOOGLE.COM TO DO A SEARCH.