AIIMS 2009
- Exam
- AIIMS
- Year
- 2009
- Subject
- Botany
- Chapter
- Reproduction in Organisms
AIIMS 2009 · Botany · Reproduction in Organisms
Which of the following statements about Spirogyra is correct?
Which of the following statements about Spirogyra is correct?
Options
- ALateral conjugation takes place in homothallic species.
- BScalariform conjugation takes place in homothallic species.
- CLateral conjugation takes place in heterothallic species.
- DThe type of conjugation is unrelated to homothallic \& heterothallic species.
Correct answer
A. Lateral conjugation takes place in homothallic species.
Step-by-step solution
Sexual reproduction in Spirogyra takes place by the process of conjugation. In Spirogyra, the process of conjugation may be of two types - scalariform conjugation and lateral conjugation. Scalariform conjugation occurs in heterothallic species. Lateral conjugation occurs between the adjacent cells of the same filament of homothallic species of Spirogyra. Lateral conjugation are of two types. They are indirect lateral conjugation (chain type) and direct lateral conjugation.