Answer:
The answers respectively are 108 and 216.
Step-by-step explanation:
According to the information given in the question, the plant called horsetail has cells that contain 216 chromosomes. They must contain 108 homologous pairs of chromosomes and provided that they are not reproductive cells, during metaphase the replication of the DNA is yet to start so they contain 216 chromosomes in the cells.
I hope this answer helps.