Calyptra is derived from
archaegonia
capsule
antheridia
columella
A.
archaegonia
Calyptra is a small sheath of cells, mainly derived from archaegonia.
Capsule is a sporophytic region of mosses.
Antheridia is a small structure that produces sperms in bryophytes or pteridophytes.
Columella is a large dome- shaped structure present in the centre of sporangium.
Write a note on economic importance of algae and gymnosperms.
Both gymnosperms and angiosperms bear seeds, then why are they classified separately?
What is heterospory? Briefly comment on its significance. Give two examples.
Explain briefly the following terms with suitable examples:
(i) protonema
(ii) antheridium
(iii) archegonium
(iv) diplontic
(v) sporophyll
(vi) isogamy
Differentiate between the following:
Red algae and brown algae
Differentiate between the following:
liverworts and moss
Differentiate between the following:
homosporous and heterosporous pteridophyte
Differentiate between the following:
syngamy and triple fusion
How would you distinguish monocots from dicots?
Mock Test Series
