Question

Sporocarp of Marsilea is
1. Heterosporous
2. Bisporous
3. Homosporous
4. Non-sporous

Answer 1

Correct Answer - Option 1 : Heterosporous

Concept-

• Plants are divided into five groups- Thallophytes, Bryophytes, Pteridophytes, Gymnosperms and Angiosperms.
• Pteridophytes are the first terrestrial plants to acquire vascular tissues – xylem and phloem.
• Pteridophytes have two groups-
  • The majority of the pteridophytes are homosporous i.e., one type of spores formed.
  • While some pteridophytes are exceptionally heterosporous.
• An example of pteridophytes is marsilea.

Explanation-

• Marsilea is heterosporous.
• The formation of spores takes place in sporangia.
• Sporangia are formed at the abaxial surface of leaves.
• The leaves on which sporangia are formed are called sporophylls.
• Sporangia are formed in sporocarp.

Therefore sporocarp of marsilea is heterosporous.

• Homosporous means one type of spores formed.
• An example of homosporous is Pteridium.