Plant Hormones - Auxin Flashcards

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1
Q

What cell division occurs in the tip of plant shoots

A

mitosis

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2
Q

What plant growth regulators are found in the tip of the stem

A

Auxins

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3
Q

What does auxin promote in the cells

A

elongation

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4
Q

When light is equal how does the tip grow

A

equally straight up

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5
Q

What happens to the shoot when light grows one sided

A

the shaded side grows more because more auxin on shaded side

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6
Q

In the shoots what side does more auxin go to when light is one sided

A

more on the shaded side so it bends more towards light since the shaded side is longer

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7
Q

What term is given to how plants respond to external stimulus

A

TROPISMS

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8
Q

What is response to light called

A

Phototropism

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9
Q

What is response to gravity called

A

gravitropism

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10
Q

IN the roots what tropisms is there
(positively…
negatively…)

A

Positively gravitropic

negatively phototropic

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11
Q

What do the tropisms in roots ensure

A

it grows downwards

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12
Q

In the shoots what tropisms are there
(positively…
negatively…)

A

positively phototropic

negatively gravitropic

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13
Q

What do the tropisms in the shoots ensure

A

it grows upwards

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14
Q

WHAT DOES AUXIN DO DIFFERENTLY IN ROOTS

A

INHIBITS Cell elongation

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15
Q

If a root is growing parallel to the ground where does most auxin go and what does it cause

A

Auxin is in the lower part of the root and it elongates less

therefore creates a bend downwards and equals out auxin

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