University:
Farmingdale State College
Course:
BIO 131 | Biological Principles II
Academic year:

2023
Views:

72

Pages:

2
Author:

Giovanna Dean

Homework #2 Directions: Download the questions and answer all parts of each question Type your answers in full Upload your work to Blackboard * Make sure your name is on your work 1) What is the common name of this Charophyte? Explain why this is so/what it is based on. ans: That is known as green algage 2) Identify this Chlorophyte. What part is indicated by the arrow? ans: that is the oogonium containing a zygote 3) Distinguish between the Isomorphic (Isogamous) and Heteromorphic (Oogamous or Heterogamous) generations. ans: In isogamous the male and female gametes are similar but in the oogamous there is a motile male gamete and a large immobile female gamete. 4) What are some commercial uses for Red Algae (just name two)? ans: a) Its used is sushi as it is seaweed and b) Agar 5) Explain what is meant by an Alternation of Generations. ans: Generations vary between sexual and asexual 6) What are the spherical structures inside this Volvox? ans: Daughter colonies (next page) 7) Name and describe the two methods of reproduction (sexual and asexual) that occur in Spirogyra. ans: a) Binary Fission b) Conjugations 8) What is the function of the pyrenoids found in Spirigyra? ans: It is used in Carbon Fixation 9) How does the Volvox move along the surface, and what does it use to accomplish this? ans: It uses the flagella to roll across the surface 10) What are phycobilins? ans: It is red & blue pigments 11) Label the three parts of Chondrus crispus indicated by the arrows. a) Blade b) Stipe c) Holdfast

Homework №2 on the Subject Biological Principles

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