Protection of the body cells of mammals against ultraviol...
Protection of the body cells of mammals against ultraviolent rays of the sun is brought about by
keratin
melanin
sebum
scales
Correct answer is B
No explanation has been provided for this answer.
A young plant showing yellow leaves is likely NOT to be deficient in? ...
The element that is essential for the coagulation of blood is ...
The function of the part labelled V in the diagram is the ...
Which of the following distinguishes a butterfly from a moth? ...
Which of the following statements about the lymphatic system is not correct? ...
The function of the part labeled I is ...
The vector that transmits trypanosomes is the ...
The part labelled I and II constitute the ...
In a Mendelian cross of red and white varieties of the four O'clock plants, the F1 generati...