Question

In lycopodium, the antherozoids are-
(a)Biflagellate
(b)Multiflagellate
(c)Multiciliate
(d)Non motile

Answer 1

A haploid structure or organ that creates and contains male gametes (called antherozoids or sperm) is an antheridium. Antheridia is the plural form, and an androecium is called a structure comprising one or more antheridias. 'Androecium' is also used as the collective name for the flowering plants' stamens.

Complete answer:
The Lycopodium antherozoid is pear-shaped at the anterior end with two flagella. Lycopodium biflagellate antherozoids are more similar to the antherozoids of Bryophytes than to those of vascular plants.
In general, in globose structures (antheridia), male gametes (antherozoids) are produced that are either stalked or sunken in the gametophyte. From mother cells enclosed in the antheridium jacket, the antherozoids, often many in number, grow. By using its whiplike fur, or flagella, two or three (in the lycopods), or several (in the horsetails and ferns), each antherozoid can move.

Additional Information: A flagellum (plural: flagella) is a long structure that helps drive certain single celled organisms in a whip-like manner. Composed of microtubules, it is. In a whip-like motion, they help move cells and species. The eukaryotic flagellum normally acts with a "S" movement and is surrounded by the membrane of the cell.
On the surface of all mammalian cells, cilia are thin, slender, hair-like structures present. In nature, they are primitive and may be single or multiple. In locomotion, Cilia plays a major role. Mechanoreception is also involved in them. As ciliates, the species that possess cilia are known.
So, the correct answer is ‘biflagellated’.

Note: The Flagellum is mainly an organelle of motility that allows movement and chemotaxis. Bacteria can have one or more flagella and can be either polar (one or more flagella at one point) or peritrichous (throughout the bacterium, multiple flagella).