Thursday 28 May 2015

Algae

Algae

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Which of the following algal divisions is characterized by possession of chlorophylls A and B, starch as the energy storage material, cellulosic cell walls and live in freshwater and marine habitats?

a. Chlorophyta
b. Chrysophyta
c. Phaeophyta
d. Pyrrophyta

Which algal division is divided up into three main groups consisting of the golden-brown algae, the yellow-green algae and the diatoms?

a. Chlorophyta
b. Chrysophyta
c. Phaeophyta
d. Pyrrophyta

Zooxanthellae are algal symbiont that live within coral reef animals. These algae belong to___________.

a. chlorophyta
b. chrysophyta
c. pyrrophyta
d. rhodophyta

The number of members of the division Phaeophyta that live in freshwater habitats___________.

a. is greater than the number of members of the division Chloro-phyta that live in freshwater habitats
b. is lesser than the number of members of the division Chlorophyta that live in freshwater habitats
c. is equal to the number of members of the division Chlorophyta that live in freshwater habitats
d. none of the above

All algae possess___________.

a. nuclei
b. chloroplasts
c. Both (a) and (b)
d. none of these

Algae is a nonvalid taxinomic term that refers to___________.

a. eukaryotic organisms that have chlorophyll a and produce O2
b. well developed cellular structure including a conducting system
c. Both (a) and (b)
d. none of the above

Which of the following algal divisions is characterized by possession of chlorophylls A and B, paramylon as the energy storage material, and the presence of a pellical instead of a cell wall?

a. Chlorophyta
b. Euglenophyta
c. Pyrrophyta
d. Chrysophyta

Which of the following best describes the algae known as diatoms?

a. Cells have intricate shells of silicon dioxide with two halves
b. Cells are encased in rigid walls composed of cellulose coated with silicon
c. Cells have flagella and a light-detecting eye spot
d. Cells contain carotenoid pigments as well as chlorophyll A and B

Chrysolaminarin is an energy storage material characteristic of___________.

a. chlorophyta
b. chrysophyta
c. phaeophyta
d. rhodophyta

Which of the following is correct?

a. All members of photolithotrophic autotrophs are also members of algae, but not all members of algae are members of photolithotrophic autotrophs
b. All members of algae are also members of photolithotrophic autotrophs, but not all members of photolithotrophic autotrophs are members of algae
c. All members of photolithotrophic autotrophs are members of algae, and all members of algae are members of photolithotrophic autotrophs
d. No member of photolithotrophic autotrophs is a member of algae

Bioluminescence is a phenomenon associated with___________.

a. chrysophyta
b. phaeophyta
c. pyrrophyta
d. chlorophyta

Laminarin is an energy storage material characteristic of___________.

a. chlorophyta
b. chrysophyta
c. phaeophyta
d. pyrrophyta

Chlamydomonas and Volvox are similar because___________.

a. they both are motile
b. they are members of the Chlorophyta
c. Both (a) and (b)
d. none of these

Starch is an energy storage material characteristic of___________.

a. chlorophyta
b. chrysophyta
c. phaeophyta
d. rhodophyta

Number of flagella produced by motile cells in___________.

a. members of the phaeophyta is greater than members of the Oomycota
b. members of the Oomycota is greater than members of the Phaeophyta
c. members of the Phaeophyta is approximately equal to members of the Oomycota
d. none of the above

The algae Chlamydomonas demonstrates a complex life cycle that switches between haploid and diploid forms. This life cycle is called ___________.

a. the sexual-asexual exchange
b. the transposition cycle
c. an alternation of generations
d. algal transformation

The number of flagella produced by motile cells in___________.

a. members of the Rhodophyta is greater than members of the Phaeophyta
b. members of the Phaeophyta is greater than members of the Rhodophyta
c. members of the Rhodophyta is exactly or approximately equal to members of the Phaeophyta
d. none of the above

Algae are classified into 6 groups, technically known as___________.

a. categories
b. divisions
c. genera
d. domains

Characteristics used to place algae into divisions include all of the following except___________.

a. form of storage material
b. flagella number and location
c. accessor pigments used in photosynthesis
d. all of the above

Which algal division never produces motile, flagellated cells among any of its members?

a. Chlorophyta
b. Chrysophyta
c. Phaeophyta
d. Rhodophyta

The __________ is the vegetative body of algae.

a. mycelium
b. plasmodium
c. pseudoplasmodium
d. thallus

Agar, which is the solidifying agent in many bacterial culture media, is part of the cell wall of___________.

a. chlorophyta
b. chrysophyta
c. pyrrophyta
d. rhodophyta

The kelps are algae found in___________.

a. chlorophyta
b. chrysophyta
c. phaeophyta
d. pyrrophyta

Frustules made of silica are characteristic of___________.

a. euglenoids
b. diatoms
c. desmids
d. seaweeds

Algae are found in all of the following places except___________.

a. oceans
b. soils
c. lakes and streams
d. associates with fungi
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