Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Which of the following plant hormones can mimic the det1 mutation, causing de-etiolation and chloroplast development in the dark?  Option: 1

Which of the following plant hormones can mimic the det1 mutation, causing de-etiolation and chloroplast development in the dark?
 

Option: 1

Cytokinin


Option: 2

Gibberellin


Option: 3

Auxin

 


Option: 4

Ethylene


Answers (1)

best_answer

The det1 mutation in plants disrupts the normal light signaling pathway, leading to a constitutive photomorphogenic phenotype even in the absence of light. In this mutation, plants exhibit characteristics of light-grown plants, such as de-etiolation (greening) and chloroplast development, even in darkness.

Cytokinin is a plant hormone that regulates various physiological processes, including cell division, shoot initiation, and differentiation. It has been shown that exogenous application of cytokinins can mimic the det1 mutation, leading to de-etiolation and chloroplast development in the dark. Cytokinins promote chloroplast development and delay chloroplast senescence, which contributes to the greening effect observed.

Therefore, cytokinins can induce similar effects as the det1 mutation, causing de-etiolation and chloroplast development in the absence of light. Hence, the correct answer is option 1.

Posted by

SANGALDEEP SINGH

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

'PM Modi personally supervising the situation': Centre tells SC in NEET case
anam-khan

NEET Paper Leak Row: NTA informs SC of security overhaul, institutional reforms
anam-khan

Re-NEET 2026 City Intimation Slip LIVE: NTA MBBS admit card soon; direct link, login details, exam date

Latest Question