Select the correct statement with respect to phloem fibres.
(a) Generally absent in primary phloem.
(b) Much elongated unbranched with needle-like apices.
(c) Sclerenchymatous in nature.
(d) Becomes dead at maturity.
Important Questions on Anatomy of Flowering Plants
Read the following statements carefully.
(a) The presence of vessels is a characteristic feature of angiosperms.
(b) Xylem fibers have highly thickened walls and obliterate central lumens.
(c) Xylem parenchyma cells are living and thin walled, and their cell walls are made up of cellulose.
(d) Xylem parenchyma store food material in the form of starch, fat, and other substances such as tannins.
How many statements are correct?
Read the following statements carefully and select the correct option.
(a) Guard cells are living, having nucleus and chloroplast.
(b) The outer wall of guard cells is thick and elastic.
(c) The stomatal aperture, guard cells, and the surrounding epidermal cells are together called stomatal apparatus.
