Question

Which of the following statements is incorrect?

• A. Antheridia are present on antheridiophore of female thallus of \textit{Marchantia}
• B. Chara is monoecious
• C. Diploid gene forms gamete after meiosis
• D. Zoospores are formed in \textit{Chlamydomonas}

Hint:

Remember: Antheridiophore → male thallus (Marchantia), Archegoniophore → female thallus.

Answer 1

The Correct Option is A

Step 1: Understanding Marchantia.
In Marchantia, antheridiophores (male sex organs) are borne on the male thallus, not on the female thallus. Archegoniophores (female sex organs) are found on female thallus.
Step 2: Analyzing other statements.
(B) Correct — Chara is monoecious, i.e., both sex organs are present on the same thallus.
(C) Correct — Gametes are always haploid, formed after meiosis from diploid cells.
(D) Correct — Zoospores are formed in Chlamydomonas.
Step 3: Conclusion.
The incorrect statement is (A), because antheridia are not present on female thallus in \textit{Marchantia}.