BIOLOGY
HORMONES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Because there aren’t as many auxins released down the stem of the plant compared to the amount that grow at the top
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Because there are vesicles along the walls on the sides of a plant which prevent growth
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Because the growing bud at the top of the plant produces auxins at the same time which means growth on the side of the plant stops
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Because toxic chemicals kill half of the active auxins in the bud which causes them to kill the others surrounding them. By the time the auxins start moving down the stem, they’ve already been killed off
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Detailed explanation-1: -That is because auxin maintains apical dominance it prevents lots of lateral buds and branches from growing on the side of the stem.
Detailed explanation-2: -Answer: Auxin promotes cell growth and elongation of the plant. In the elongation process, auxin alters the plant wall plasticity making it easier for the plant to grow upwards. Auxin also influences rooting formations.
Detailed explanation-3: -In roots, where auxin tends to inhibit cell elongation, auxin accumulates on the lower side in roots oriented perpendicularly to gravity, causing these cells to elongate less and the root to bend toward gravity.
Detailed explanation-4: -It grows because the auxin causes the cells to elongate on the shaded side, so this side grows more. This unequal growth of the two sides, results in the growth of the stem towards the light. If lit from above, the plant will grow upwards.