Home
Class 11
BIOLOGY
In xylem, strength is provided by...

In xylem, strength is provided by

A

vessels

B

fibres

C

parenchyma

D

1 and 2

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Xylem Composition**: - Xylem consists of four main components: tracheids, vessels, fibers, and parenchyma. - Each of these components has a specific role in the functioning of xylem. 2. **Role of Tracheids**: - Tracheids are elongated, dead cells that have thickened cell walls, which provide some mechanical strength to the plant. - They have an unequal thickness in their cell walls, which contributes to their structural integrity. 3. **Role of Vessels**: - Vessels are also part of xylem and are arranged end to end, allowing for efficient water conduction. - However, vessels have thinner cell walls compared to tracheids, making them less rigid and in need of additional support. 4. **Role of Fibers**: - Fibers are specialized cells that provide mechanical support to the xylem. - Since vessels have thinner walls and require support to withstand the pressure of sap, fibers fulfill this role. 5. **Role of Parenchyma**: - Parenchyma cells serve primarily as storage tissue and do not contribute to the mechanical strength of xylem. 6. **Conclusion**: - In summary, while tracheids contribute to strength, they do not require mechanical support. Vessels need support due to their thin walls, and this support is provided by fibers. - Therefore, the component that provides strength in xylem is **fibers**. ### Final Answer: **Fibers provide strength in xylem.** ---
Promotional Banner

Similar Questions

Explore conceptually related problems

Xylem element

Which of the following tissue provide tensile strength against bending & swaying-

Centrifugal xylem arrangement is found in

Xylem translocates

Which plant tissue provides both mechanical strength as well as flexibility ?