Taproot, main root of a primary root system, growing vertically downward. Most dicotyledonous plants (see cotyledon), such as dandelions, produce taproots, and some, such as the edible roots of carrots and beets, are specialized for food storage.the following have tap root is pea

The correct answer is option 'C' - Pea.

Explanation:
A taproot is a type of root system in which there is one main root called the primary root that grows vertically downwards, and smaller lateral roots called secondary roots that branch off from it. The taproot system is commonly found in dicot plants.

- Maize (option 'a') has a fibrous root system, which means it has many thin roots of similar size that spread out horizontally. These roots do not have a main primary root, so maize does not have a taproot system.
- Wheat (option 'b') also has a fibrous root system similar to maize, so it does not have a taproot system.
- Pea (option 'c') has a taproot system. When a pea seed germinates, it develops a primary root that grows straight down into the soil. This primary root is the taproot, and from it, smaller lateral roots branch off.
- Rice (option 'd') has a fibrous root system, just like maize and wheat. It does not have a taproot system.

In summary:
- Maize, wheat, and rice have fibrous root systems.
- Pea has a taproot system.

It's important to note that while these are the general root systems of these plants, there can be variations within each species. Additionally, some plants may have both taproots and fibrous roots, depending on their growth stage or environmental conditions.

Tap root means a root that has a main root and others roots are attached from it.
Pea has a tap root.
So, Option C is correct answer.