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Q.
Functions of auxins include
Plant Growth and Development
Solution:
$NAA$ and $2$, $4$-$D$ are often employed for inducing flowering in litchi and pineapple. Application of auxins (e.g., $IAA$, $IBA$) and conjugate auxins {e.g., $IBA$-alanine) to unpollinated pistils make them develop into seedless fruits (or parthenocarps) which carry a better market price than the normal fruits having seeds. $2$, $4$-$D$ and $2$, $4$, $5$-$T$ are used as weedicides (herbicides) which destroy broad leaved weeds in cereal crops and lawns. Dalapon ($2$, $2$-dichloropropionic acid) kills grasses in broad leaved crops.