167 questions and answers in this section

Natural Sciences » Botany

Explain why plants need light to grow.

Explain why plants need light to grow.

Light is basically the fuel that allows plants to make their own energy. Thanks to the green pigment called chlorophyll, they capture sunlight. This is...

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Explain why sunflowers follow the sun's trajectory throughout the day?

Explain why sunflowers follow the sun's trajectory throughout the day?

Sunflowers follow the movement of the sun to maximize light absorption and promote their growth. This phenomenon is known as heliotropism. When the sun rises...

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Explain why do the leaves of trees change color in autumn?

Explain why do the leaves of trees change color in autumn?

The leaves of trees contain several types of pigments responsible for their color. The main pigment is chlorophyll, which gives the leaves their characteristic green...

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Explain why the seeds of some plants can remain dormant for years before germinating.

Explain why the seeds of some plants can remain dormant for years before germinating.

Some seeds have a very tough coat that prevents water or air from entering. Without sufficient water or oxygen, they remain dormant. Others contain internal...

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Explain why tree roots can crack concrete.

Explain why tree roots can crack concrete.

Tree roots have an amazing ability to cause cracks in concrete due to their natural ability to expand and grow. As they grow, roots exert...

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Explain why are forest fires necessary for some plant species?

Explain why are forest fires necessary for some plant species?

Some plants actually need fire to release their seeds or to trigger their germination. For example, the cones of certain pines like the Aleppo pine...

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Explain why the presence of lichens is an indicator of air quality?

Explain why the presence of lichens is an indicator of air quality?

Lichens are organisms composed of a symbiotic association between a fungus and an alga or cyanobacterium. This mutually beneficial collaboration allows lichens to colonize various...

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Explain why forest mushrooms react to light and change shape.

Explain why forest mushrooms react to light and change shape.

Wood mushrooms respond to light through special molecules called photoreceptors. These tiny detectors act like little microscopic eyes—not for clear vision, but just to perceive...

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Explain why bananas are curved?

Explain why bananas are curved?

Bananas are curved due to their growth process. Initially, the banana flower grows upwards, then the flower stem curves towards the ground due to gravity. This curvature...

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Explain why do the flowers of some plants close at night and open during the day?

Explain why do the flowers of some plants close at night and open during the day?

These opening and closing movements of flowers are mainly the result of a phenomenon called nyctinasty. This process relies on variations in internal pressure within...

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