Your question: What is bolting Ncert?

D) Appearance of flowers. Hint: Bolting is the term applied to vegetable crops when they prematurely run to seed, usually making them unusable. A cold spell or changes in day length initiates this behaviour. It can affect a wide range of vegetables including lettuce, spinach and fennel.

What is meant by bolting?

Bolting is the production of a flowering stem (or stems) on agricultural and horticultural crops before the crop is harvested, in a natural attempt to produce seeds and reproduce. … Plants that have produced flowering stems in this way are said to have bolted.

What is bolting class 12?

Hint: Bolting is a phenomenon by which flowering stems are often produced in the horticultural or agricultural crops before it is harvested.

What is bolting in a plant?

To achieve this goal, lettuces—and many other greens—sprout tall stalks that produce small flowers that yield smaller seeds (that grow more plants, of course). This is all part of a process called “bolting,” also known as “going to seed.” And for annuals like lettuce, it marks the end of a plant’s life cycle.

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What is bolting class 10?

In horticulture, bolting refers to the premature production of flowering stems, especially on horticultural and agricultural crops.

What is bolting class 11 Ncert?

Hint: Bolting is the term applied to vegetable crops when they prematurely run to seed, usually making them unusable. A cold spell or changes in day length initiates this behaviour. It can affect a wide range of vegetables including lettuce, spinach and fennel.

What is bolting effect?

The phenomenon of bolting is an attempt of plants to produce seeds early and it is a survival mechanism that is triggered in these plans when plants are facing stressful conditions. It is hence, a premature production of the flowering stem so that plants can produce seeds early.

What is bolting in human body?

an unusual lengthening of plant stems, due to elongation of cells, which can be induced by plant hormones called GIBBERELLINS producing a stem with long INTERNODES.

What is Richmond effect?

Richmond Lang effect is the retardation of aging due to the application of the plant regulator cytokinins. The regulator acts by retarding the rate of destruction of chlorophyll and yellowing of leaves.

What are rosettes in plants?

In botany, a rosette is a circular arrangement of leaves or of structures resembling leaves. In flowering plants, rosettes usually sit near the soil. … In bryophytes and algae, a rosette results from the repeated branching of the thallus as the plant grows, resulting in a circular outline.

What causes bolting in plants?

Why Do Plants Bolt? Most plants bolt due to hot weather. When the ground temperature goes above a certain temperature, this flips a switch in the plant to produce flowers and seeds very rapidly and to abandon leaf growth almost completely. Bolting is a survival mechanism in a plant.

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What is bolting in spinach?

Bolting is word that means a plant has gone to seed, and spinach can bolt due to water stress from too little water, too much heat in its final stages of growth and with too much sun. As the days become longer and warmer during the end of spring or early summer, spinach plants send up flower stalks.

Why is bolting bad?

Why Bolting Is Bad

To send up the flower stalk that signals bolting, the plant is squandering resources that would otherwise be put into nourishing its leaves and roots. … The remaining leaves will be smaller and tougher. Any further leaves produced will also have such a bitter flavor that you will not want to eat them.

What hormone delays senescence?

From the above information we can say that cytokinin is the plant hormone which delays senescence and helps in cell division.

What is bolting and which hormone promotes this process?

Bolting is induced by plant hormones of the gibberellin family, and can occur as a result of several factors, including changes in day length, the prevalence of high temperatures at particular stages in a plant’s growth cycle, and the existence of stresses such as insufficient water or minerals.

Which of the following is bolting hormone?

Plant-hormone gibberellins can artificially cause bolting. These plant hormone gibberellins are naturally found in the plants but can also be exogenously produced. The height of intermodal regions present in the stem is increased by these gibberellins.