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The primary root and its branches constitute (a) Fibrous root system (b) Tap root system (c) Both (a) and (b) (d) None of these

Short Answer

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(b) Tap root system

Step by step solution

01

Identifying Root Systems

Firstly, there are two types of major root systems: fibrous and taproot system. The fibrous root system spreads in all directions, with all roots approximately the same thickness. The taproot system, on the other hand, consists of one large central root (the primary root) and several smaller branching roots (secondary roots).
02

Relating Given Characteristics to Root Systems

The given characteristic in the question is the primary root and its branches. This characteristic is linked to the taproot system, which is defined by a primary root that sprouts secondary branches.
03

Choosing the Correct Answer

Given that the taproot system fits the characteristics mentioned in the question, the appropriate answer to this question is (b) Tap root system.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Taproot System
Understanding the taproot system is essential for appreciating the diversity of plant life forms and their adaptations to various environments. A taproot system is distinguishable by a primary central root that grows downward and gives rise to smaller, lateral roots. These secondary roots often penetrate deep into the soil, anchoring the plant and accessing water reservoirs.

For example, many trees and large shrubs have a prominent taproot system that allows them to survive in conditions where water is not readily available on the surface. Aside from water absorption, the taproot can also store food and nutrients, making it an essential part of the plant's overall vigor and stability. Carrots and dandelions are classic examples of plants with a taproot system. Understanding this root architecture helps in recognizing how plants with a taproot system excel in specific ecosystems and can affect their surrounding environment.
Fibrous Root System
In contrast to the taproot system, the fibrous root system consists of a network of roots that are more or less the same size and spread out horizontally from the plant's base, forming a dense mat. This root type is typical in grasses and other small, herbaceous plants.

A fibrous root system excels in preventing soil erosion by creating an extensive 'net' that holds the topsoil in place. It efficiently absorbs moisture and nutrients from the soil surface due to its large surface area. This type of root system is also quick to establish and can be advantageous in habitats subject to disturbances, such as flooding or fire. The fibrous root system allows for rapid recovery and regrowth, ensuring the persistence of the plant species.
Plant Morphology
Plant morphology encompasses the study of the form and structure of plants. Understanding plant morphology is like learning the language of botany; it equips us with the terms and concepts needed to describe and classify the diverse forms of plant life. This includes roots, stems, leaves, flowers, and fruit. Morphological characteristics are not only important for identification but also provide insights into the evolutionary adaptations of plants.

For example, the development of either a taproot or fibrous root system has evolved as a practical adaptation to certain environmental conditions a plant may face. Thick waxy leaves, the presence of thorns, and specific flower shapes are all morphological traits that can tell a story about a plant's habitat and survival strategies. Recognizing these various forms and their functions enhances our understanding of plant ecology and conservation.

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