Multiple choice

Which among the following statements does NOT characterizes phloem tissues in plants?

  1. The sieve-tube cells are deficit of a prominent nucleus and a distinct vacuole and lies on the outside of the xylem.

  2. Hydrostatic pressure refers to the pressure that any fluid in a confined space exerts. The movement through the phloem is compelled by positive hydrostatic pressures.

  3. Messenger RNA is a subtype of RNA. Sieve tube elements are carries messenger RNAs in the phloem.

  4. Phloem sap is composed largely of sugar dissolved in water and it aids in conducting informational signals throughout vascular plants.

  5. When the plant is an embryo, vascular tissue originates from cambium tissue.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This one is the incorrect statement as when the plant is an embryo, vascular tissue emerges from procambium tissue, which is at the center of the embryo. Protophloem itself appears in the mid-vein extending into the cotyledonary node, which constitutes the first appearance of a leaf in angiosperms, where it forms continuous strands.

Keep practicing — related questions