The diagram shows the life cycle of a pine tree. What does stage 5 show? A.) Young female cones produce spores from cells that divide using meiosis.
B.) A spore divides and grows into a pollen grain using mitosis.
C.) Young male cones produce spores using meiosis.
D.) A seed develops after the sperm from a pollen grain fertilizes the egg in an ovule.

A

Explanation:

i took this quiz and I am pretty sure it is A

please dont be mad if it wrong

 D. A seed develops after the sperm from a pollen grain fertilizes the egg in an ovule.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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protist eukaryotes that are not plants, animals, or fungi ("misfits")