Introduction:
The aquatic biome is the largest biome present in the Earth. This biome is divided into two regions: freshwater biome (rivers and ponds) and marine biome (estuaries and oceans).
Answer to Problem 1MCQ
Correct answer:
“The major primary producer in aquatic biome is phytoplankton”. Therefore, option c. is correct.
Explanation of Solution
Reason for the correct statement:
The primary producers are autotrophic organisms, as they use sunlight to make their own organic molecules. The phytoplankton is microscopic, free floating aquatic organisms and they use solar energy to synthesize their own food particles. Thus, the phytoplanktons are the primary producers in aquatic biomes.
Option c. is given as “phytoplankton”.
As “the phytoplankton is the primary producers in aquatic biomes” is the right answer.
Hence, option c. is correct.
Reasons for the incorrect statements:
Option a. is given as “Underwater plants”.
The underwater plants are not the primary producers because the phytoplanktons are present in large amount which create hindrance for penetrating the light in deep water. Thus, the plants does not get enough amount of sunlight for photosynthesis So, it is a wrong answer.
Option b. is given as “The sun”.
Sun does not act as a producer. So, it is a wrong answer.
Option d. is given as “Insect larvae”.
Insect larvae are not autotrophs. They did not synthesise their own food. So, it is a wrong answer.
Hence, options a., b. and d. are incorrect.
Phytoplanktons is the primary producers in aquatic biomes.
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Chapter 39 Solutions
Biology: Concepts and Investigations
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