The question is incomplete. The complete question is:
Plasmodesmata are cell junctions that are found between ________.
a) adjacent animal cells in the same tissue type
b) individual cardiac cells in heart muscle tissue
c) the plasma membrane of actively dividing prokaryotes
d) adjacent plant cells
Answer:
d) adjacent plant cells
Explanation:
Plasmodesmata are the cytoplasmic channels that connect the adjacent plant cells together and maintain the continuity of their cytoplasm. These are the narrow channels with 20-40 nm diameter. Plasmodesmata serve the function analogous to the gap junctions of the animal cells. The presence of plasmodesmata between the neighboring plant cells allows the movement of molecules and ions between them. Plant cells can adjust the diameter of the plasmodesmata according to the requirement to allow the transport of substances across them.
Climate, Land form/shape and fossils(he was most interested in this)
Answer:
by experimentation and observation
Explanation:
Answer:
These changes can be caused by environmental factors such as ultraviolet radiation from the sun, or can occur if an error is made as DNA copies itself during cell division. Acquired mutations in somatic cells (cells other than sperm and egg cells) cannot be passed to the next generation.
The thoracic region receive sympathetic innervation from the middle and inferior cervical ganglia.
The cervical sympathetic trunk is the portion of the sympathetic trunk located to the left and right of the cervical spine, this trunk extends from the entrance of the thoracic wall to the base of the skull.
- It is made up of 3 ganglia: the superior ganglia made up of the first 3 cervical ganglia; the middle ganglia made up of the 4th cervical ganglion and the inferior ganglia made up of the last 4 ganglia.
- These ganglia are responsible for the sympathetic innervation of the upper extremities, the viscera of the thoracic cavity and that of the organs of the abdominal cavity.
Therefore, we can conclude that the thoracic sympathetic chain is made up of ganglia that innervate the thoracic region.
Learn more about the sympathetic innervation here: brainly.com/question/25711534
