Multiple Choice QuestionsWhich of the following statements about Pteridophytes is true?
The homosporous forms are precursors to the seed habit
Gametophyte is the dominant plant body
First terrestrial plants to possess vascular tissues
Equisetum is a member of pteropsida
Equisetum is a member of pteropsida
C.
First terrestrial plants to possess vascular tissues
Among all the given statements, statement III is correct. Rest can be corrected as:
A - The heterosporous forms are precursors to the seed habit.
B - Sporophyte is the dominant plant body.
D - Equisetum is a member of Sphenopsida.
E - Prothallus are the spores that germinate to give rise to inconspicuous, small but multicellular free living, mostly photosynthetic thalloid gametophytes.
Pinus seed cannot germinate and establish without fungal association. This is because :
it has obligate association with mycorrhizae.
it has very hard seed coat
its seeds contain inhibitors that prevent germination.
its embryo is immature
Phloem in gymnosperms lacks :
Sieve tubes only
Companion cells only
Both sieve tubes and companion cells
Albuminous cells and sieve cells
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