PLANTS
TRANSPORT IN PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Roots always grow toward the dark, and shoots (stems) grow toward the light.
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The roots grow away from the force of gravity, and the shoots (stems) grow towards gravity.
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The roots grow toward the force of gravity, and the shoots (stems) grow away.
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The plant will become a smaller version of a mature plant.
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Detailed explanation-1: -Hence, if a seed is planted upside down, it will still grow into an erect mature plant because the root will grow downwards towards gravity (positive geotropism) while the stem grows upward away from gravity (negative geotropism).
Detailed explanation-2: -(a) In response to gravity the roots of a plant always grow downwards. This phenomenon is known as geotropism.
Detailed explanation-3: -Geotropism (also called gravitropism) is the directional growth of an organism in response to gravity. Roots display positive geotropism when they grow downward, while shoots display negative geotropism when they grow upward.
Detailed explanation-4: -The roots grown downward in the direction of gravity, which is positive gravitropism, and the shoot grows upward away from gravity, which is negative gravitropism. The reason plants know which way to grow in response to gravity is due to amyloplasts in the plants.
Detailed explanation-5: -The roots of a seed that is inserted upside down in the soil will grow downwards toward the Earth and the stem will grow upwards away from the Earth. Thus, the direction of growth of roots and stem does not change if a root is inserted upside down in the soil.