The chitin in the exoskeleton of many arthropods is stren...
The chitin in the exoskeleton of many arthropods is strengthened by
lipids
proteins
calcium compounds
organic salts
Correct answer is C
No explanation has been provided for this answer.
Which of the following organisms have kidney as their excretory organ? ...
People suffering from myopia ...
In which of the following species is the biomass of an individual the smallest? ...
Which of the following is NOT a characteristic of monocot plants? ...
An increase in air pressure in the lungs is due to the ...
Flatworms and roundworms are said to be invertebrates because ...