Scientists discover oldest known population of plant root stem cells
Q. Scientists discover oldest known population of plant root stem cells in a fossil which is how old?- Published on 06 Jun 16a. 310 million years
b. 320 million years
c. 330 million years
d. 340 million years
ANSWER: 320 million years
Scientists have found the oldest known population of plant root stem cells in a 320 million year old fossil, providing a clue on how ancient roots have developed
- Research marks the first time an actively growing fossilised root has been discovered- an ancient plant frozen in time
- Cells which give rise to the roots of the ancient plant were found in fossilised root tip at UK’s Oxford University
- Stem cells are self renewing cells responsible for the formation of multicellular organisms
- These are located in plants at the tips of roots and shoots in groups called meristems
- 320 million year old stem cells are different to those living today with a unique pattern of cell division unknown until now