Question

Consider the following statements and choose the correct options.

• A. The thread-like cytoplasmic strands, running from one companion cell to a sieve cell is called plasmodesmata
• B. Fibres are absent in both xylem and phloem in a dicotyledonous leaf
• C. The first form xylem elements are described as metaxylem
• D. Radial vascular bundles are mainly found in the leaves

Answer 1

Answer: (A)

The thread-like cytoplasmic strands, running from one companion cell to a sieve cell is called plasmodesmata

The plant cells have a rigid cell wall which makes it very hard for the exchange of materials across the different cells. The plasmodesmata are cytoplasmic connections that run in between the cells which facilitate the exchange of material from one cell to another.

Hence, the correct answer is 'the thread like cytoplasmic strands, running from one companion cell to a sieve tube is known as plasmodesmata'