Biology help? plz?!?

Question

4. What happens when an action potential reaches the end of the axon? (Points: 3)

(A)The neuron takes up chemical messengers (neurotransmitters).

(B)The neuron releases chemical messengers (neurotransmitters).

(C)The sodium ions travel back toward the dendrites.

(D)The potassium ions travel back toward the cell body.

6. Which statement best describes the life cycle of plants such as ferns? (Points: 3)

(A)Plants have a two-part life cycle, spending part of their life in a diploid phase and part in a haploid phase.

(B)Plants have a single life cycle and are entirely diploid.

(C)Plants have a single life cycle and are entirely haploid.

(D)Different plants have a different number of phases in their life cycle.

7. Which structure of a flowering plant produces female reproductive cells, or eggs? (Points:3)

(A)stigma

(B)petal

(C)ovule

(D)anther

Answer 1

1.b

2.c

3.c

Answer 2

B C C