Question

Fill in the blanks :-

___ is a plant hormone produced in the stem tip that promotes cell elongation.

______ are sometimes used to increase the amount of a -amylase in germinating barley (Hordeum vulgare) which is used in production of malt for brewing industry.


___ is also an important natural plant hormone and is used in agriculture to force the ripening of fruits. The hydrate of ethylene is ethanol.


____ is a sesquiterpene, which has important roles in seed development and maturation, in the synthesis of proteins and

​

Answer 1

Required Answers :-

• $\sf\underline{\red{ \leadsto Auxin }}$ is a plant hormone produced in the stem tip that promotes cell elongation.

• $\sf\underline{\red{ \leadsto Gibberellins }}$ are sometimes used to increase the amount of a -amylase in germinating barley (Hordeum vulgare) which is used in production of malt for brewing industry.

• $\sf\underline{\red{ \leadsto Ethylene }}$ is also an important natural plant hormone and is used in agriculture to force the ripening of fruits. The hydrate of ethylene is ethanol.

• $\sf\underline{\red{ \leadsto Abscisic \:acid }}$ is a sesquiterpene, which has important roles in seed development and maturation, in the synthesis of proteins and

⠀⠀⠀⠀⠀━━━━━━━━━━━━━━━━━━━⠀

More To Know :-

${\pink{\boxed{\large{\bold{Auxins:-}}}}}$

• Auxins are a class of plant hormones with some morphogen-like characteristics. Auxins play a cardinal role in coordination of many growth and behavioral processes in plant life cycles and are essential for plant body development.
• Auxin moves to the darker side of the plant, causing the cells there to grow larger than corresponding cells on the lighter side of the plant.
• Auxins accumulate on the lower side of the shoot, due to gravity.
• Cells on the lower side grow more quickly. The shoot bends upwards. This is called negative geotropism.

${\pink{\boxed{\large{\bold{Gibberellins:-}}}}}$

• Gibberellins are plant hormones that regulate various developmental processes, including stem elongation, germination, dormancy, flowering, flower development, and leaf and fruit senescence. GAs are one of the longest-known classes of plant hormone.
• Gibberellins are produced in greater mass when the plant is exposed to cold temperatures.
• They stimulate cell elongation, breaking and budding, seedless fruits, and seed germination.
• Gibberellins cause seed germination by breaking the seed's dormancy and acting as a chemical messenger.

${\pink{\boxed{\large{\bold{Ethylene:-}}}}}$

• Ethylene plant growth substance (phytohormone, plant hormone), involved in promoting growth, epinasty, fruit ripening, senescence and breaking of dormancy. Its action is closely linked with that of auxin.
• Ethylene was used medically as a anesthetic in concentrations significantly greater than that found in a ripening room.
• Ethylene are to cause vegetables to go yellow, bud damage in dormant nursery stock, drop off of leaves in ornamentals and rapid death of most cut flowers.

${\pink{\boxed{\large{\bold{Abscisic \:acid :-}}}}}$

• Abscisic acid (ABA) is often referred to as a inhibitory rather than stimulatory hormone. It is involved in the closure of stomata, bud and seed dormancy and is known to inhibit other hormonal actions.

• Compatible osmolytes, which enable plants to tolerate stresses due to environmental or biotic factors, and as a general inhibitor of growth and metabolic activities.
• Abscisic acid stimulates the growth and development of the root system including adventitious roots of the hypocotyl the formation and growth of the lateral shoots of the cotyledonary node and to a much lesser extent the growth of the main shoots of axenically cultivated 17 days old Phaseolus coccineus seedlings.

Answer 2

Answer:

Required Answers :-

Auxin

is a plant hormone produced in the stem tip that promotes cell elongation.

Gibberellins

are sometimes used to increase the amount of a -amylase in germinating barley (Hordeum vulgare) which is used in production of malt for brewing industry.

Ethylene

is also an important natural plant hormone and is used in agriculture to force the ripening of fruits. The hydrate of ethylene is ethanol.

Abscisic acid

is a sesquiterpene, which has important roles in seed development and maturation, in the synthesis of proteins and

⠀⠀⠀⠀⠀━━━━━━━━━━━━━━━━━━━