Biology : PU-CET (U.G) 2016 Panjab University Entrance Exam With Answers

Practice Mode:
32.

Nutrition In Chlamydomonas Is :

A: Heterotrophic
B: Parasitic
C: Autotrophic
D: saprophytic

The answer is: C

Explanation

Nutrition in Chlamydomonas is C: Autotrophic.

Chlamydomonas is a genus of unicellular green algae that is photosynthetic and thus is capable of producing its own food from inorganic compounds, making it an autotroph. It contains chloroplasts, the organelles responsible for photosynthesis, which allow it to convert light energy into organic molecules, such as sugars and starches, that can be used as a source of energy for the cell.

Chlamydomonas is capable of both sexual and asexual reproduction, and under certain conditions, it can also become a mixotroph, meaning it can combine its autotrophic nutrition with heterotrophic nutrition by taking up and digesting small organic molecules or other organisms. However, its primary mode of nutrition is autotrophic, making it a producer in the food chain of aquatic ecosystems.