Q. G H Shull observed inbreeding depression in a plant. Miller and Letham isolated a hormone from the immature seeds of that plant. Which of the following characters is not associated with the plant?
A) Atactostelic condition in stem
B) Bundle sheath in leaf
C) Chromosomal number of endospermous cell is 30
D) Medulla absent in the root
Explanation
Inbreeding is mating between individuals related by descent or ancestry. Inbreeding depression is the reduction or loss in vigour and fertility as a result of inbreeding. Detailed information on inbreeding in maize was published independently by East and Shull. Maize is a monocot plant. Bundle sheath in leaf and medulla in roots are present in maize.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.