Find More About This Course Here ATTEMPT MOCK TEST (POWERMOCK 13 – Plant kingdom) TODAY BEFORE END TIME
DAILY FREE MCQ CHALLENGE for Pre-Medical Entrance Preparation
Question
Which of the following plants contain mercury in their tissues:
A. Fucus
B. Laminaria
C. Fusarium
D. Both A and B
NOTEImportant Question from AIIMS
See Answer Here
A. D. Both A and B
See Explanation Here
Mercury is the most toxic metal and interacts with enzyme systems and inhibits their functions, especially enzymes with reactive sulfhydryl (-SH) groups. The toxic effects of mercury on algae generally include:
- Cessation of growth in extreme cases
- Inhibition of photosynthesis
- Reduction in chlorophyll content
- Increased cell permeability and loss of potassium ions from the cell
Fucus and Laminaria (both are algae) contain 1.1 g and 0.7 g mercury per gram of tissue respectively, while Ulva contains 25 g. The mollusc Mytelus contains 2.1 g of mercury.
References
Seaweed Ecology and Physiology By Catriona L. Hurd, Paul J. Harrison, Kai Bischof, Christopher S. Lobban, Page no: 385.
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