Question

(1) Biflagellate antherozoids are found in selaginella/Psilotum/Equisetum/ Marsilea.​

Answer 1

Selaginella

Explanation:

• Antherozoids refers to the male gametes called sperms produced in the plants especially in the Bryophytes and Pteridophytes.
• The Antherozoids are produced in the organ called antheridium which produces antherozoids with flagella which help the antherozoids to swim in the water to reach the female organs.

The number of flagella produced in the sperms differs in species as some are:

1. Aflagellate: Marsilea

2. Biflagellate: Selaginella

3. Multiflagellate: Psilotum, Equisetum

To learn more:

1. Antherozoids: https://brainly.in/question/3876280

2. Selaginella Antherozoid: https://brainly.in/question/2172216

Answer 2

In selaginella, Biflagellate antherozoids are found

Explanation:

• The archegonia and antheridia are commonly of embedded type.
• The archegonium reside of neck which commonly projects from the surface of the prothallus. It holds 1-2 neck canal cells. There is no venter.
• The egg and the venter canal cell stay encircled by the cells of prothallus. The antheridia are usually sessile.
• They have a 1-cell thick jacket surrounding a mass of androgonial cells.
• They develope the androcytes that are metamorphosed into the biflagellate "(Lycopodium, Selaginella)" or multiflagellate "(Equisetum, ferns)" antherozoids.

To know more:

Biflagellate antherozoids in psilotopsida

https://brainly.in/question/3396620