Question

What two membrane organelles are most likely abundant in the cutinized cell of the epidermis? Explain why.

Answer 1

Answer:

Secondary pollen presentation is a widespread phenomenon in the flowers of Rubiaceae and a synapomorphy for the tribe Vanguerieae [1]–[3]. In members of this tribe the upper portion of the style is modified to form a knob-like pollen presenter (“receptaculum pollinus”), tipped by the stigmatic surface, together forming a structural unit known as the stylar head complex [4]. In flower buds, the anthers surround and are appressed against the stylar head complex (Figure 1A). Just before anthesis, the anthers dehisce introrsely and release pollen which adheres to the pollen presenter. At anthesis (Figure 1B) the pollen presenter with adherent pollen grains is exposed, thereby presenting pollen to potential pollinators; the anthers then shrivel and become obsolete. Functionally the secondary pollen presenter has hitherto usually been viewed as a structure merely providing physical support for the adherent pollen grains.

Answer 2

Membranes abundant in the epidermis:

• The cutinized cells of the epidermis have different sorts of membranes which include rough and smooth ER, Golgi Apparatus, secretory vesicles as well as mitochondria.
• The epidermal cells have a complicated ultrastructure with plenty of organelles, counting smooth and rough endoplasmic reticulum, Golgi apparatus, mitochondria as well as secretory vesicles.
• Because the synthesis of protein is an indispensable function of practically all cells, therefore, ribosomes are located in practically all cell

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