(Q).
Q: Under a microscope, salt crystals are what shape? Choices: - triangles - circles - squares - cubes A:
(A).
cubes

(Q).
Q: What promotes cell division and are necessary for growing plants in tissue culture? Choices: - polyamines - auxins - mitochondria - cytokinins A:
(A).
cytokinins

(Q).
Q: What is the complex network of nervous tissue that carries electrical messages throughout the body? Choices: - respiratory system - circulatory system - lymphatic system - nervous system A:
(A).
nervous system