Question

Which of the following is present in dicot roots-
(A) collenchyma (B) trichome
(C) Stomata
(D) Xylem fibre​

Answer 1

Answer:

A Collenchyma

Explanation:

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Answer 2

Xylem fibres are present in dicot roots. (Option D)

• Xylem is the conducting tissue for water and minerals from roots to the stem and leaves. It contains four major elements- tracheids, vessels, xylem fibres and xylem parenchyma.
• Xylem fibres are non-living sclerenchyma tissues that lie between the tracheids and vessels. It moves water upward to all parts of the plant.
• In a dicot root, the xylem forms a star with 3 or 4 arms (exarch). Along with the phloem, pericycle and pith, it constitutes the stele.
• Collenchyma are found in the growing regions of the plant such as young stem and petiole of the leaf. It gives mechanical support.
• Trichomes are present in dicot stems on the epidermal tissues. They store and secrete several secondary metabolites.
• Stomata are minute openings found mostly on the abaxial epidermis of leaves. They help in photosynthesis and transcription.