Which is the significance of the tunica in plant growth?

a) in the tunica, cell divisions are perpendicular to the stem axis, giving rise to thick layers of tissues covering the outside of the tip.

b) in the tunica, cell divisions are parallel to the stem axis, giving rise to thick layers of tissues covering the inside of the tip

c) in the tunica, cell divisions are parallel to the stem axis, giving rise to thin layers of tissues covering the inside of the tip

option a is correct i.e.

explanation:

in context to the membrane of nerve impulse, the outer membrane of neuron is semi permeable that is only sodium ions can pass through the membrane i.e. smaller ions can pass through the membrane while larger ions cannot pass through it.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

c. movement because i took the test and it lets me review my answers

a = executive branch; b = judicial branch