Which of the following best describes three DIFFERENCES that occur among these four types of algae?
A. They are all composed of cells, have flagella and photosynthesize.
B. Chlamydomonas reinhardtil is a single celled algae, while the other three are multicellular with identical cells.
C. Chlamydomonas reinhardtil is a single celled algae, Gonium pectorale is composed of identical cells, and Pleodorina californica and Volvox are composed of different cell types (somatic and reproductive).
D. Chlamydomonas reinhardtil is a multicellular algae, Gonium pectorale is a single celled algae but is shown in a group, and Pleodorina californica and Volvox are multicellular algae.
E. Chlamydomonas reinhardtil is a single celled algae, Gonium pectorale is multicellular, Pleodorina californica is composed of different cell types (somatic and reproductive) and Volvox is not an algae because it cannot photosynthesize.
C. Chlamydomonas reinhardtil is a single celled algae, Gonium pectorale is composed of identical cells, and Pleodorina californica and Volvox are composed of different cell types (somatic and reproductive).
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Speciation often occurs when a habitat becomes more heterogeneous. In Lake Victoria different species of cichlids are found in different areas of the lake. The best explanation for this speciation is that
A) natural selection favored different heritable variations in different parts of the lake. B) male cichlids that lived in deep water needed to be seen by females, so they became colorful. C) food was scarce in the lake, so some fish had to learn how to scrape algae, some had to learn to eat insects, and some had to learn to bite leaves. D) humans selected for many different traits in cichlids in order to market them to the aquarium trade.
What would be a typical phenotypic monohybrid ratio in which a lethal allele is involved?
A) 9:3:3:1 B) 2:1 C) 3:1 D) 6:2:3:1 E) 13:5
Which trait exemplifies the chaparral regions of California? a. Plants are adapted to occasional fires
b. Lie between deserts and tropical rainforests. c. Plants evolved water conserving mechanisms. d. Receives 25 - 100 centimeters of rainfall per year. e. None of these choices.
The Winogradsky column is a method for assessing the entire gene complement of a habitat, revealing both the biodiversity and metabolic capabilities of the microbial community at the same time
Indicate whether the statement is true or false.