- A Lateral roots are sometimes mistakenly thought to arise from the outer epidermis, growing outward without disturbing internal tissue
- B Lateral roots arise from deep pericycle cells, allowing them to push through cortex and epidermis, ensuring strong anchoring
- C Lateral roots are sometimes mistakenly thought to arise spontaneously, carrying no real developmental or anchoring significance
- D Lateral roots are sometimes mistakenly thought to arise mainly from endodermal cells without much pericycle involvement
Correct answer: B. Lateral roots arise from deep pericycle cells, allowing them to push through cortex and epidermis, ensuring strong anchoring
Explanation: Lateral roots originate from pericycle cells (inside the endodermis) - endogenous origin. They push through cortex and epidermis to emerge. This contrasts with lateral stem branches which are exogenous (arise from surface meristems). Endogenous origin ensures strong vascular connection.
Concept context
Internal tissue organisation: meristems, permanent tissues (xylem, phloem, parenchyma), and secondary growth. Frequently tested in NEET.