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The ability of the Venus Flytrap to capture insects is due to
Rapid turgor pressure changes
Specialized "muscle-like" cells
Chemical stimulation by the prey
A passive process requiring no special ability on the part of the plant
Answers (1)
The ability of the Venus Flytrap (Dionaea muscipula) to capture insects is primarily due to rapid turgor pressure changes in its specialized leaf structures, known as "traps."
The Venus Flytrap has modified leaves with a unique trapping mechanism. Each trap consists of two lobes that are hinged together. Along the edges of these lobes are sensitive trigger hairs. When an insect or any small object touches these trigger hairs, it stimulates the plant to initiate its trapping response.
The triggering of the hairs sends an electrical signal to the cells within the trap. This signal causes an influx of ions, particularly calcium ions, into specialized cells called motor cells. This influx of ions leads to a rapid change in osmotic pressure within the motor cells, resulting in a dramatic increase in turgor pressure.
As a result of this turgor pressure increase, the lobes of the trap rapidly snap shut, trapping the insect inside. The closure of the trap is aided by the presence of tiny interlocking hairs on the surface of the lobes, which prevent escape. The trapped insect eventually dies, and the plant secretes digestive enzymes to break down and absorb the nutrients from the prey.
The rapid turgor pressure changes in the motor cells of the Venus Flytrap are a remarkable adaptation that allows the plant to capture and digest insects as a source of additional nutrients, particularly in environments where the soil may be nutrient-poor.
Hence, the correct answer is option 1.
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