Question

Relate the development of plant needles to the occurrence of mutations.

Answer 1

Answer: B

Explanation:

Answer 2

Development of Plant Needles

Explanation:

• Seed of pitch pine treated with colchicine delivered tetraploid seedlings which had thick and sporadic needles and less fortunate tallness and diameter growth than ordinary seedlings.  

• In test of colchicine-initiated polyploidy in pines, researcher found that a significant number of the polyploid plants returned to a diploid development in light of the fact that the polyploid cells partitioned at a more slow rate and were overwhelmed by the more quickly developing diploid cells which encompassed them.  

• The primary needles of both diploid and polyploid plants were more effective at low light intensity than secondary needles, and they had lower compensation points.