Tag: introduction to pteridophytes
Questions Related to introduction to pteridophytes
Which of the following set is not show heterospory and heterophily?
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Psilotum, Lycopodium, Pteris and Adiantum
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Selaginella, Salvinia, Lycopodium and Pteris
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Salvinia, Lycopodium, Selaginella and Psilotum
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Salvinia, Selaginella, Azolla and Lycopodium
In fern sex organ are found on :-
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Protonema
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Prothallus
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Sporophyte
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Sporophyll
The antheridium (male organ) is located on the lower surface of the fern prothallus and the archegonium (female organ) is located on the upper surface of the fern prothallus.
Vascular cryptogams are
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Pteridophytes
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Angiosperms
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Mosses
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Algae
Cryptogams are defined as lower plants or plant-like organisms, that reproduce by spores. Vascular Cryptogams refers to those vascular plants, that do not make seeds.
Which statement is correct for homosporus pteridophyta ?
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Gametophyte is autotrophic, whille sporophyte is parasitic
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Gametophyte is semi parasite and sporophyte is autotrophic
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Gametophyte and sporophyte are usually parasitic
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Sporophyte is autotrophic
The plants with primitive vascular tissue are called
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Bryophytes
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Pteridophytes
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Angiosperms
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Gymnosperms
The pteridophyte, popularly known as 'horsetail' or a 'scouring rush' is
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Equisetum
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Fern
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Lycopodium
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Psilotum
Horsetail is in a family of plants containing about 35 species within the genus Equisetum. Scouring rush (Equisetum hyemale) is evergreen, with leafless, hollow, segmented stems with ash-colored bands. Stems grow to about 1/2 inch in diameter and reach up to five feet tall. Because the stems are rough and durable (due to their high silica content), they were called as scouring rushes, because early pioneers used them to scrub pots and pans.
Which group of plants is called as vascular cryptogams?
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Pteridophyta
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Bryophytes
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Algae
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Fungi
Vascular cryptogam is an old botanical phrase and it refers to those vascular plants that do not make seeds. Thus, cryptogam refers to the production of a separate, usually very small, archegoniate gametophyte. These are well represented in the fossil record.
Pteridophytes differ from bryophytes in having
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Vascular tissues
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Archegonia
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Motile sperms
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None of the above
All of these are the characters of angiosperms except they
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Are most advanced
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Bear true fruits
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Bear covered seeds
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Are cryptogams
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Show double fertilization
Cryptogams are plants, that reproduce by spores without flowers or seeds but angiosperms possess flowers and seeds. Angiosperms are more advanced than the gymnosperms. They consist of covered seeds as compared to the naked seeds of the gymnosperms. Angiosperms bear true fruits. They show characteristics of double fertilization.
Gametophyte embeded in sporophyte in
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Bryophyta
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Pteridophyta
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Cryptogams
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Spermatophyta
The spermatophyta comprises of all those land plants that produce flowers and seed. In angiosperms, and other seed plants, gametophytes are not independent seed plants, instead they are small structures found embedded within the sporophyte.