The quiescent center is the mitotically inactive portion of the root tip that acts as a reserve of healthy cells in case the apical meristem becomes damaged.
Quiescent center cells exhibit high resistance to ionizing radiation, especially when compared to surrounding initial cells, leading to the hypothesis that the quiescent center functions as a stem cell reservoir, ensuring the rejuvenation and perseverance of the root apical meristem.
The root quiescent center is a pool of rarely dividing stem cells inside the root apical meristem. The Quiescent center maintains the environment more regularly by dividing initials, forming the root apical meristem cell niche.
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Answer:
When an electron absorbs energy, it jumps to a higher orbital. An electron in an excited state can release energy and 'fall' to a lower state. When it does, the electron releases a photon of electromagnetic energy.
Explanation:
Sensory neuron that carried a sensation into the CNS is a first order neuron.
The expulsion of the embryo or fetus from the uterus before the middle of the second trimester is a condition called abortion. It is termination of pregnancy by removal or expulsion of an embryo.
Miscarriage is also that is known as spontaneous abortion which is unintentional expulsion of embryo within the 24 week and the most common cause of spontaneous abortion during first trimester is chromosomal abnormalities of embryo .
The health risk of abortion depend on the procedure is performed safely or unsafely. According to world health organization which is unsafe abortions as those performed by unskilled individuals.There is small diference in safety and efficiency between medical abortion using a combined regimen of mifepristone and misoprostal and surgical abortion in first startiung 3 weeks.
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1. They have intercellular spaces between them
2. They have thin walls
