Question

Petiole and rhizome in ferns are covered with small hairs, called as
A. Spurs
B. Ramenta
C. Fronds
D. Ligule
E. Rhizoids

Answer 1

Hint: Young leaves, such as those of ferns, have circular vernation and are often coated with brown fur. Leaves are non-photosynthetic and the stem apex is covered.

Complete Answer:
A vascular plant which displaces spores is a pteridophyte. Since neither flowers nor seeds are produced by pteridophytes, they are sometimes pointed to as cryptogams, indicating that their methods of reproduction are concealed. Both pteridophytes are ferns, lycophytes, and horsetails.

Now, let us find the solution from the options-
- In certain species, a spur is an extension of bone wrapped in a sheath of horn located in different anatomical places. Spurs form from several other parts of the foot, usually in conjunction with joints in which the toes touch the foot or the foot reaches the long bones, unlike claws or nails, which develop from the tip of the toes. Spurs are most often seen on the hind feet, but some species have spurs on the wings' leading edge. Thus, option A is not the correct option.
- Brown hairy structures known as scales or ramenta are covered by younger portions of the leaves and rhizome.
- A frond is a broad leaf that is split. The leaves of ferns are pointed to as fronds in both traditional use and botanical nomenclature, and some botanists limit the name to this category. Thus, option C is not the correct option.
- A ligule is a thin extension of several grasses and sedges at the leaf and leafstalk junction. A ligule, such as those of a ray floret in plants in the daisy family Asteraceae, also is a strap-shaped part of the corolla. Thus, option D is not the correct option.
- Rhizoids are protrusions that spread from bryophytes and algae to the lower epidermal cells. They are close to the root hairs of vascular soil plants in form and function. Thus, option E is not the correct option.

Thus, the correct option is option (B) Ramenta.

Note: Pteridophytes are ready-sporing vascular plants of alternating, available-living gametophyte and sporophyte stages, independent at growth, which have a life cycle. The roots, leaves and stems of the sporophyte’s body are well distinguished. The root system is still random.