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Question
Which one of the following is a total parasite?
Options
Nepenthes
Rhizobium
Cuscuta
Lichens
MCQ
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Solution
Cuscuta
Explanation:
Cuscuta is a total parasite because it completely depends on its host plant for water, nutrients, and food, lacking chlorophyll for photosynthesis. In contrast, Nepenthes is insectivorous, Rhizobium is a symbiotic nitrogen fixer, and Lichens are mutualistic associations. Hence, Cuscuta is the total parasite among the options given.
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