Home
Class 11
BIOLOGY
When the primary root is short lived and...

When the primary root is short lived and replaced by large number of thin roots, it constitutes the

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Primary Root**: The primary root is the first root that emerges from the seed during germination. It is typically thick and grows downward into the soil. 2. **Short-lived Nature of Primary Root**: In some plants, the primary root does not last long. Instead, it is replaced by a different type of root system. This indicates that the primary root is not the main anchoring structure for the plant. 3. **Formation of New Roots**: After the primary root dies or becomes less prominent, a large number of thin roots begin to develop. These roots emerge from the base of the stem or the area around where the primary root was located. 4. **Identification of the Root Type**: The new roots that replace the primary root are characterized by their thin, thread-like structure. These roots spread out widely and are known for their fibrous nature. 5. **Conclusion**: The root system that consists of a large number of thin roots replacing the primary root is referred to as a **fibrous root system**. This type of root system is commonly found in monocotyledonous plants (monocots). 6. **Example of Plants with Fibrous Roots**: An example of plants that exhibit a fibrous root system includes various types of grasses and weeds, which are typical representatives of monocots. **Final Answer**: When the primary root is short-lived and replaced by a large number of thin roots, it constitutes the **fibrous root system**. ---
Promotional Banner

Topper's Solved these Questions

  • EARTHWORM

    ALLEN|Exercise EXERCISE-2|50 Videos

  • STRUCTURAL ORGANISATION IN ANIMALS (ANIMAL TISSUE)

    ALLEN|Exercise Exercise|30 Videos

Similar Questions

Explore conceptually related problems

Select correct statements from the following: a. In the majority of the dicotyledonous plants, the direct elongation of the radicle leads to the formation of the primary root. b. In monocotyledonous plants, the primary root is short-lived and is replaced by a large number of roots. These roots originate from the lowermost node of the stem and constitute the fibrous root system. c. Adventitious roots are found in Monstera and banyan tree. d. The fibrous root system is found in wheat and mustard plants.

In dicots, primary root is formed by

The primary growth in root is due to

How many statement is/are true? i. The primary root and its branches constitute the tap root system. ii. In monocot the primary root is short lived. iii. The root that arises from other part of the plant other than radicle is called adventitious root

An injured meristem root will be replaced by

Primary root is the direct elongation of the

Primary roots and its branches constitute

Primary root originates from :-

Primary roots and its branches contitute

Find the number of roots of equation xsinx=1