What are the characteristics of Nephrolepis?
Distinguishing Features
- a fern with upright or drooping fronds usually up to 50 cm long.
- this species often produces distinctive round tubers on its creeping underground stems.
- its ‘leaves’ are divided into numerous alternatively arranged narrow ‘leaflets’ (10-35 mm long and 4-11 mm wide).
What is the class of Nephrolepis?
| Class | Polypodiopsida – leptosporangiate ferns |
| Subclass | Polypodiidae |
| Order | Polypodiales |
| Family | Lomariopsidaceae – fringedferns |
| Genus | Nephrolepis Schott – swordfern, Boston fern |
Does Nephrolepis have indusium?
Nephrolepis (Nephros, kidney; lepis, the indusium kidney-shaped and scale like) is represented by about 30 species. These species are distributed in the tropics of the entire world.
Which type of root system is found in Nephrolepis?
description. … single seed leaf) have a fibrous root system, characterized by a mass of roots of about equal diameter. This network of roots does not arise as branches of the primary root but consists of many branching roots that emerge from the base of the stem.
How does Nephrolepis reproduce?
Nephrolepis reproduces sexually by means of spores. The spores are produced in distinct spore sacs called sporangia. The sporangia are borne on the lower surface of fertile pinnae called sporophylls. In mature plants, all pinnae are sporophylls and in immature plants, the pinnae are sterile without sporangia.
What is the common name of Nephrolepis?
Boston fern
Nephrolepis exaltata (Boston fern)
Is nephrolepis a Thallophyta?
Explanation: Nephrolepis is a genus of about 30 species of ferns. It is the only genus in the family Nephrolepidaceae, placed in the suborder Aspleniineae of the order Polypodiales in the Pteridophyte Phylogeny Group classification of 2016. The genus is commonly referred to as macho ferns or swordferns.
What type of leaves are present in Nephrolepis?
Leaves – are tuft, long, narrow, and simple pinnate. Leaves are characterized by numerous, crowded, and often imbricated pinnae. Leaves are slightly falcate and articulated at the base. So, the correct answer is, “mixed”.
Are sporangia present in the branches of Ectocarpus?
Both kinds of sporangia are present on the same diploid sporophyte plant. The sporangia are borne terminally and singly on lateral branches. These are borne singly on lateral branches. Diploid nucleus divides meiotically into many haploid nuclei (32-64), each of which changes into a zoospore.
What are the three main parts of a microscope?
Figure: Diagram of parts of a microscope There are three structural parts of the microscope i.e. head, base, and arm. Head – This is also known as the body, it carries the optical parts in the upper part of the microscope. Base – It acts as microscopes support.
What is the function of the nosepiece in a microscope?
Fine adjustment: Fine tunes the focus and increases the detail of the specimen. Nosepiece: A rotating turret that houses the objective lenses. The viewer spins the nosepiece to select different objective lenses.
What kind of leaves does A nephrolepis have?
It is short, slender, suberect (TV. cordifolia), erect (N. exaltata), or wide creeping (N. volubilis, goes upto 50 feet over trees). It bears a close tuft of leaves and long, slender lateral branches called runners.
How are the reproductive structures of Nephrolepis cordifolia arranged?
These reproductive structures (i.e. sori) are arranged in two rows on the undersides of the ‘leaflets’ (i.e. pinnae), each row being midway between the margin and the centre (i.e. midrib). This species reproduces by spores and vegetatively via underground stems (i.e. rhizomes) and often also by fleshy underground tubers.