Types of Phloem

Q.

Which one of the following is dead but work efficiently?

1. xylem plates

2. Vessels

3. Companion cells

4. Sieve tube

Q. Wider sieve tube elements are seen in protophloem.

1. having light cytoplasm and small nuclei

2. having dense cytoplasm and prominent nuclei

Q. Wider sieve tube elements are seen in protophloem.

1. True
2. False

Q. Wider sieve tube elements are seen in protophloem.

1. True
2. False