निम्नलिखित में से कौन सा एक जीवित यांत्रिक ऊतक (Mechanical Tissue) है, जो पौधों के बढ़ते अंगों को लचीलापन और यांत्रिक शक्ति प्रदान करता है?

Leaves characterized by parallel venation are a distinctive feature of:

The primary increase in length of stems and roots in plants is due to which of the following tissues?

Match Column I with Column II Column IColumn IIa. Tracheids1. Living, food conductionb. Sieve tubes2. Dead, water conductionc. Companion cells3. Associated with sieve tubesd. Xylem fibres4. Mechanical support