The action is Fixed Action Pattern. It is a highly typecasted sequence of behaviors that, once begun, is usually carried to completion. It is triggered by a sign stimulus. The egg outside the nest is the stimulus.b <span>It is performed virtually the same by all regardless of environmental conditions. </span> Even if the egg is removed or slips away, she completes the behavior by returning an "imaginary" egg to the nest.
<span>As the pollen tube penetrates the ovule, it releases two sperm cells. As in gymnosperms, the ovule becomes a seed, encasing the embryo and endosperm in a seed coat. But unlike gymnosperms, in angiosperms the ovary containing the ovules develops into a fruit after fertilization.</span>
Answer:
1:2:1 is the genetic crosses
My theory is that . Mybe it changed because the flavor composition of the cracker changed or it dissolved in the saliva.
THEORY. :'3
Given question is incomplete. Complete question has been attached.
Answer:
C. Excessive potassium has diffused out causing hyperpolarization.
Explanation:
The nerve action potential can be divided into following stages:
- Stimulus is detected by the cell in resting stage.
- Sodium channels in the membrane open from where influx of sodium ions occur which is called depolarization
- After a while, sodium channels close and potassium channels open from where efflux of potassium ions occur which is called repolarization.
- The membrane potential further lowers due to continous efflux of potassium ions which is called hyperpolarization.
- After a while potassium channels close and membrane returns to its resting stage.
In the given figure, stage 4 depicts hyperpolarization because the membrane potential has dropped to the lowest point below -70mV. Hence, option C is correct.