Question

The origin of the secondary root's lateral root is

• A. Lysigenous
• B. Exogenous
• C. Schizogenous
• D. Endogenous

Answer 1

Answer:

D. Endogenous

• The mature pericycle of the parent root gives rise to lateral root primordia.

• A periclinal division, which produces a double layer of pericycle-derived cells, is one of the initial occurrences.

• As shown by differential gene expression in the inner and outer layers, primordia cells differentiate nearly soon after commencement.

• An endogenous lateral branch emerges from the pericycle and goes through the cortex.