1.If terminal bud of a plan is removed
a. Plants grows to a normal height
b. Lateral branches grow
c. Plant increase in height
d. Roots do not develop
2.Prominent action gibberellins is to
a. Increase the number of buds
b. Make dwarf plant into tall plant
c. Makes tall plant taller
d. Increase the size of leaf
Answers
Answer:
1)If a terminal bud is removed, the growth of lateral buds is stimulated and the plant becomes bushier. But if lateral buds or branches are removed, growth is channeled into the terminal bud and the plant becomes taller or longer. In some plants, growth buds may remain dormant in the stem (or in the bark covering it) for many years.
2)Gibberellins are naturally present hormones found in all plants, they help to increase cell size and numbers enabling greater photosynthesis, plant metabolism and in turn, increased growth in stems, leaves, and roots. Gibberellins can provide a solution both for extra grazing at spring turnout as well as boosting first cut silage swards.
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Answer:
1. (B) Lateral branches grow
2. (D) Increase the size of the leaf
a) If the terminal bud is removed by pruning, pinching or breaking off, the supply of that chemical is slowed and the other buds (which will form what are called lateral shoots) quickly grow and branch out, resulting in a bushier look to the plant instead of a long spirally growth.
b). Gibberellins have striking growth-promoting effects. They speed the elongation of dwarf varieties to normal sizes and promote flowering, stem and root elongation, and growth of fruit. Such elongation resembles in some respects that caused by IAA, and gibberellin also induces IAA formation.