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When a plant's leaves and stems grow toward light the plant is responding to an external?
When a plant's leaves and stems grow toward light, it is responding to an external stimulus known as phototropism. This growth response allows the plant to maximize its exposure to sunlight, which is essential for photosynthesis. The hormone auxin plays a key role in this process by promoting cell elongation on the side of the plant that is away from the light, causing the plant to bend toward the light source. This adaptive behavior enhances the plant's ability to thrive in its environment.
What causes Etiolation in plants?
Etiolation in plants is caused by a lack of light. When a plant doesn't receive enough light, it will elongate its stems in search of more light, resulting in weak and pale growth. Etiolation is a plant's response to low light conditions in an attempt to survive.
Which of these terms can be defined as a plant's response to light?
Phototropism refers to a plant's response to light, where the plant grows toward or away from a light source.
Do all parts of a plant respond the same why to stimuli?
No, not all parts of a plant respond the same way to stimuli. Different parts of a plant, such as roots, stems, and leaves, have specialized functions and may react differently to environmental cues like light, gravity, and touch. For example, stems may exhibit phototropism by growing toward light, while roots typically grow downward in response to gravity (gravitropism). This variation in response allows plants to adapt effectively to their surroundings.
How are geotropism and phototropism similar?
Both geotropism and phototropism involve plant growth responses to external stimuli. Geotropism is a plant's growth response to gravity, which helps roots grow downward and stems grow upward. Phototropism is a plant's growth response to light, guiding plants towards a light source for photosynthesis. Both tropisms aid plants in optimizing their growth and development.
A plant sits on a window sill over time the stems of the plant curve toward the light coming in the windowThis process is called A phototropism B photoperiodism C gravitropism D phytochromism?
A. Phototropism. This is the directional growth response of plants to light, where the stems or leaves bend towards the light source to maximize photosynthesis.
What causes Etiolation in plants?
Etiolation in plants is caused by a lack of light. When a plant doesn't receive enough light, it will elongate its stems in search of more light, resulting in weak and pale growth. Etiolation is a plant's response to low light conditions in an attempt to survive.
How does light brings about tropic movement in the stem and root of a flowering plant?
photo tropism is the growth-response to light in a plant. stems exhibit positive photo tropism while most roots exhibit negative photo-tropism
Which of these terms can be defined as a plant's response to light?
Phototropism refers to a plant's response to light, where the plant grows toward or away from a light source.
Is a plant growing towards light a response or stimulus?
It is a response called phototropism, where the plant grows towards light as a result of the stimulus of light perception.
How would you expect leaves and stems to grow in response to gravity?
Stems will always grow towards light and away from gravity.
Do all parts of a plant respond the same why to stimuli?
No, not all parts of a plant respond the same way to stimuli. Different parts of a plant, such as roots, stems, and leaves, have specialized functions and may react differently to environmental cues like light, gravity, and touch. For example, stems may exhibit phototropism by growing toward light, while roots typically grow downward in response to gravity (gravitropism). This variation in response allows plants to adapt effectively to their surroundings.
What is the plant's response to a light called?
A plant that responds to light is said to be photosensitive, and it is said to have the property of photosensitivity.
How are geotropism and phototropism similar?
Both geotropism and phototropism involve plant growth responses to external stimuli. Geotropism is a plant's growth response to gravity, which helps roots grow downward and stems grow upward. Phototropism is a plant's growth response to light, guiding plants towards a light source for photosynthesis. Both tropisms aid plants in optimizing their growth and development.
The phototropic response to light occurs where?
The phototropic response to light occurs in plant cells, specifically in specialized cells called photoreceptors. These photoreceptors detect the direction and intensity of light and trigger a growth response in the plant, causing it to grow towards the light source. This response helps the plant optimize its exposure to light for photosynthesis.
What do you call a plant response?
Phototropism, where the plant "turns" to arrange its leaves for better exposure to light. This process is regulated by growth regulators in the plant. Photo = light Tropism from the Greek "trope" or turning. See picture
What causes plant stems to exhibit positive response to light?
Plants exhibit positive response to light through phototropism, a process regulated by the hormone auxin. When one side of the stem is exposed to light, auxin accumulates on the shaded side and promotes cell elongation, causing the stem to bend towards the light source. This helps the plant maximize light absorption for photosynthesis.
