Correct answer
D. Ptyalin
Explanation
Ptyalin is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Exposure to low temperature stimulates plants to flower. This is called___________?
Introduction of vaccine within the body to produce immunity is an example of____________?
Which chemical component has the same % in bacterial as well as the mammalian cell_____________?
Which is not a vertebrate ?
The opening and closing of stomata is directly controlled by the___________?
Of the following four options which one is most advanced?