Which of the following is not a stem modification?

Question

What are some archaeological sites where Neanderthal remains and artifacts have been discovered?

Answer 1

To determine which option is not a stem modification, let's examine each choice:

Thorns of Citrus: In plants like citrus, thorns are modified stems. They serve as a defense mechanism to protect the plant from herbivores.
Tendrils of Cucumber: Tendrils in cucumbers are modified stems that help the plant in climbing and providing support by winding around structures.
Flattened Structures of Opuntia: The flattened structures, or pads, of Opuntia (a type of cactus) are actually modified stems. These pads perform photosynthesis and store water.
Pitcher of Nepenthes: The pitcher of the Nepenthes plant is a modified leaf, not a modified stem. It functions as a trap to capture insects for nutrient absorption.

The correct answer is: Pitcher of Nepenthes, as it is not a modification of the stem but rather a modified leaf.

Thus, the option that is not a stem modification is Pitcher of Nepenthes.

Answer 2

To determine which option is not a stem modification, let's examine each choice:

Thorns of Citrus: In plants like citrus, thorns are modified stems. They serve as a defense mechanism to protect the plant from herbivores.
Tendrils of Cucumber: Tendrils in cucumbers are modified stems that help the plant in climbing and providing support by winding around structures.
Flattened Structures of Opuntia: The flattened structures, or pads, of Opuntia (a type of cactus) are actually modified stems. These pads perform photosynthesis and store water.
Pitcher of Nepenthes: The pitcher of the Nepenthes plant is a modified leaf, not a modified stem. It functions as a trap to capture insects for nutrient absorption.

The correct answer is: Pitcher of Nepenthes, as it is not a modification of the stem but rather a modified leaf.

Thus, the option that is not a stem modification is Pitcher of Nepenthes.

The Correct Option is D