Biology Biotechnology SZABMU 2025
PMDC Verified Question 62 of 65
F.C Steward used this plant for his experiment i.e (tissue culture)?
A
Carrot
B
Radish
C
Corn
D
Maize
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Carrot
Concept:

Cellular totipotency in plant tissue culture experiments.

Solution:

In 1958, F.C. Steward demonstrated cellular totipotency by culturing isolated phloem explants from wild carrot roots (Daucus carota) in coconut milk medium, successfully regenerating fully functional mature carrot plants.

Why other options are incorrect:

  • Radish: Not used in Steward's landmark 1958 plant cellular totipotency tissue culture studies.


  • Corn: Monocotyledonous plant model not utilized in Steward's original phloem explant experiments.


  • Maize: Maize was not the experimental plant model used to demonstrate complete cell totipotency in 1958.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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