Advertisements
Advertisements
प्रश्न
Fern is a vascular plant. Yet it is not considered a Phanerogams. Why?
Advertisements
उत्तर
Fern belongs to the sub-kingdom Cryptogamae. Cryptogams produce spores but do not produce seeds. Also, in cryptogams, the sex organs are concealed, which is called the fern, a vascular plant. Phanerogams are seed-producing plants, and their sex organs are visible. Phanerogams have flowers or cones containing reproductive organs such as stamens, pistils, and ovules.
Phanerogams have a more complex structure than ferns. Seed plants have roots, stems, and leaves specialized for different functions. For example, roots absorb water and nutrients from the soil, stems support the plant, and leaves carry out photosynthesis. Ferns, conversely, have simple structures that do not have the same degree of specialization. They have rhizomes, which are underground stems, and fronds, which are the leaves that carry out photosynthesis and produce spores.
Hence, the fern is a vascular plant. Yet, it is not considered a Phanerogam.
APPEARS IN
संबंधित प्रश्न
Choose the correct option.
Which is the dominant phase in Pteridophytes?
Choose the correct option.
In Bryophytes ______.
Complete the following table.
| Groups of algae | Chlorophyceae | Phaeophyceae | Rhodophyceae |
| 1. Stored food | Starch | ||
| 2. Cell Wall | Cellulose and algin | ||
| 3. Major pigments | Chl- a, d and Phycoerythrin |
Differentiate between Dicotyledonae and Monocotyledonae based on the following characters:
- Type of roots
- Venation in the leaves
- Symmetry of flower
Girth of a maize plant does not increase over a period of time. Justify.
Draw a neat labelled diagram.
Spirogyra
Draw a neat labelled diagram.
Chlamydomonas
Identify the plant groups on the basis of the following feature:
Spore producing plants
Identify the plant groups on the basis of the following feature:
Plant body undifferentiated into root, stem, and leaves
Identify the plant group on the basis of the following feature.
Plant needs water for fertilization
