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MCQs

Total Questions : 189 | Page 17 of 19 pages
Question 161. PH range optimal for maximum metabolic activity of protozoa is ______________
  1.    2-3
  2.    12-14
  3.    6-8
  4.    4-6
 Discuss Question
Answer: Option C. -> 6-8
Answer: (c).6-8
Question 162. Protozoa that eat other organisms are known as _______________
  1.    saprophytic
  2.    holozoic
  3.    parasitic
  4.    mutualistic
 Discuss Question
Answer: Option B. -> holozoic
Answer: (b).holozoic
Question 163. The process in which protozoa attaches themselves to a host’s body is known as __________________
  1.    Endocommensalism
  2.    Ectocommensalism
  3.    Parasitic
  4.    Mutualism
 Discuss Question
Answer: Option B. -> Ectocommensalism
Answer: (b).Ectocommensalism
Question 164. What is the maximum temperature for protozoa?
  1.    40 degrees C
  2.    10 degrees C
  3.    16 degrees C
  4.    25 degrees C
 Discuss Question
Answer: Option A. -> 40 degrees C
Answer: (a).40 degrees C
Question 165. Certain flagellates of protozoa are present in the gut of some termites in a mutualistic relationship.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 166. Which algal division is divided up into three main groups consisting of the golden-brown algae, the yellow-green algae and the diatoms?
  1.    Pyrrophyta
  2.    Chlorophyta
  3.    Phaeophyta
  4.    Chrysophyta
 Discuss Question
Answer: Option D. -> Chrysophyta
Question 167. Zooxanthellae are algal symbiont that live within coral reef animals. These algae belong to
  1.    chrysophyta
  2.    pyrrophyta
  3.    rhodophyta
  4.    chlorophyta
 Discuss Question
Answer: Option B. -> pyrrophyta
Question 168. 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?
  1.    Chlorophyta
  2.    Phaeophyta
  3.    Pyrrophyta
  4.    Chrysophyta
 Discuss Question
Answer: Option A. -> Chlorophyta
Question 169. The number of members of the division Phaeophyta that live in freshwater habitats
  1.    None of these
  2.    is lesser than the number of members of the division Chlorophyta that live in freshwater habitats
  3.    is greater than the number of members of the division Chloro-phyta that live in freshwater habitats
  4.    is equal to the number of members of the division Chlorophyta that live in freshwater habitats
 Discuss Question
Answer: Option B. -> is lesser than the number of members of the division Chlorophyta that live in freshwater habitats
Question 170. Bioluminescence is a phenomenon associated with
  1.    phaeophyta
  2.    pyrrophyta
  3.    chrysophyta
  4.    chlorophyta
 Discuss Question
Answer: Option B. -> pyrrophyta

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