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NEET Biology question

BiologyPlant Growth and DevelopmentNEET

Read the given statements and select the correct option. (i) Darwin and Darwin (1880) found that unilateral illumination was perceived by the coleoptile tip of canary grass (ii) IAA is the universal natural auxin discovered by Kogl et al. (iii) IBA is both a natural and synthetic auxin (iv) Auxins promote the growth of lateral shoots

Answer: (A)

Solution

Statements (i) and (ii) are true: Charles and Francis Darwin's canary-grass coleoptile experiments (1880) established that the tip perceives unilateral light, and IAA, the chief natural auxin, was identified/characterised by Kögl and co-workers. Statement (iii) is also factually true (IBA occurs naturally in some

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Question ID VK-114438