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goblinko [34]
3 years ago
10

Jill stepped on a tack. Which part of the central nervous system caused her foot to move off the tack quickly in a reflex respon

se? hippocampus cerebrum spinal cord hypothalamus
Biology
1 answer:
Veseljchak [2.6K]3 years ago
4 0

Answer: Spinal cord.

Explanation:

The spinal cord of the central nervous system helps to move off quickly as a part of the reflex response. Jill stepped on a tack and suddenly he realizes that he should quickly move his legs out of the tack.

The pain is not stimulated until the signals reaches from the receptor to the brain. The formation of the reflex arc ensures that the amount of potential tissue damaged is less.

It forces the body to move quickly from the place that is causing damage.Example: Moving the leg up involuntarily when stepped on pin.

This occurs because the sensory neurons connects to the motor neurons within the spinal cord.This leads to the contraction of bones and muscles.

Hence, the correct option is spinal cord.

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The correct answer would be - 25%.

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It is given that the Blue flower is dominant over the yellow flower which means Blue is represented by allele B here and allele b for yellow and Bb is a heterozygous case with a blue phenotypic character. Similarly, the Tall plant is dominant over short and represented by T and t respectively.

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Gametes: BT Bt bT and bt

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bT     BbTT   BbTt    bbTT   bbTt

bt      BbTt     Bbtt    bbTt     bbtt

Here 4 out of 16 offspring are heterozygous for both traits represented by bold alphabets. Therefore the correct answer is 25%

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