Problem 14 - Objective Biology for NEET

Question

Prop or pillar roots are found in (a) Carrot (b) Sweet potato (c) Banyan tree (d) Maize

Step-by-Step Solution

Answer

The correct answer is (c) Banyan tree.

Step 1: Understanding the options

Analyze each of the options: \n(a) Carrot: It is a root vegetable, primarily grown for its taproot. Carrots do not have prop roots. \n(b) Sweet potato: Sweet potatoes are root vegetables but they don't have prop roots. \n(c) Banyan tree: A Banyan tree is a type of fig tree and is known for its extensive prop roots. \n(d) Maize: Maize, or corn, is a grain plant that has fibrous roots and does not have prop roots.

Step 2: Selecting the correct option

Out of all the given options, a Banyan tree (option c) is known for its extensive prop roots, which form a complex network and provide the tree stability in swampy environments.

Step 3: Confirming the answer

Confirm the answer by rechecking the unique feature of roots in a Banyan tree which has prop or pillar roots. Therefore, the correct answer is option (c) Banyan tree.

Key Concepts

Prop Roots

Prop roots are fascinating features found in particular types of plants. They are also known as aerial roots that provide additional support to large trees.
What makes prop roots unique is their ability to grow from branches and descend down to the ground, acting as natural pillars that stabilize the tree.
This adaptation allows trees to grow in a variety of environments, especially in places where strong anchorage is essential, like marshy areas or places with unstable soil.

• Prop roots are not found in all plants, but they are crucial for those that have them.
• They play a significant role by absorbing air and moisture, aiding in the plant's overall growth and survival.

Understanding prop roots is particularly important for botanists and those studying plant physiology as they reveal plants' adaptive strategies to survive in challenging environments.

Banyan Tree

The Banyan tree is one of the most famous examples of trees with prop roots. It belongs to the fig tree family and is renowned for its vast canopy, often spreading over vast areas.
The tree's unique root system is its standout feature. Prop roots descend from branches to provide additional support. This structure allows the Banyan to expand horizontally without collapsing under its own weight.
What makes the Banyan tree truly remarkable is its ability to create its own forest-like environment. Each prop root, once thickened and rooted, develops into a trunk-like column.

• Banyan trees are symbolic in many cultures and are often considered sacred.
• These trees can grow to be hundreds of years old, providing habitat and shelter to numerous species.

By forming a network of roots and branches, the Banyan plays a crucial part in its ecosystem, offering shade, shelter, and stabilizing the soil.

Root Systems

Root systems play a fundamental role in the growth and stability of plants. They come in various forms, each adapted to the specific needs of the plant.
One of the most common distinctions is between taproots, like those found in carrots, and fibrous roots, like those in grass.
Plants like the Banyan tree have developed incredibly intricate root systems that include prop roots. These roots spread wide and deep, providing extensive support and allowing for nutrient uptake over a larger area.

• Root systems serve as the primary anchor for plants, preventing them from being uprooted by natural forces.
• They also play a critical role in water and nutrient absorption, essential for the plant's growth and development.

Understanding the diversity of root systems helps us appreciate the adaptability and resilience of plants across different environments.

Pillar Roots

Pillar roots are a specialized form of prop roots, often found in trees like the Banyan. These roots extend downward from the branches, eventually embedding into the soil and forming strong, supportive pillars.
Pillar roots are essential for the structural stability of large trees, particularly those with sprawling branches.
Over time, these roots will develop into secondary trunks. This transformation enables the tree to support its large canopy and possibly spread out even further.

• Pillar roots function similarly to architectural columns, supporting the tree's weight and keeping it upright.
• They are a testament to the incredible adaptability and engineering of nature.

When observing trees with pillar roots, one can appreciate both the aesthetic beauty and the practical function they provide in maintaining the tree's health and stability.