Question

A moss sperm moves by means of _________.
A. Pseudopodia
B. Cilia
C. Flagella
D. Any of these

Answer 1

Hint: Mosses are also known as bryophytes. They can be monoicous and dioicous both. They are biflagellates. Locomotion in them occurs through flagella. Sperms swim in water and reach the female part for fertilization. Pseudopodia are found in amoeba. Cilia help in the locomotion of single celled organisms.

Complete step by step answer:
Mosses include the Bryophytes. These are small, non-vascular flowerless plants that are used to form dense green clumps or mats. They do not contain seeds and after fertilization they develop into sporophytes. They contain single capsules (spores) at the tip of un-branched stalks.
Mosses can be dioicous or monoicous. Sex organs in dioicous mosses are present on the different plants while monoecious mosses have gametes on the same plant. In water, sperm from the anther swim to the archegonia and fertilization occurs, which results in the formation of sporophytes. They have biflagellate sperms that mean they have two flagella that aid in propulsion. Fertilization in these cannot occur without water. After fertilization, sporophyte comes out of the archegonia venter. About a quarter to half a year needed for the maturation of sporophytes. Pseudopodia are the structures mostly found in amoeba for engulfing food and other material. Cilia are mostly present in single cell organisms such as paramecium. It helps in the locomotion, transportation of fluid, search food and avoid danger. From the above information we know that a moss sperm moves by the means of flagella.

So, the correct answer is option C.

Note: Dawsonia is the tallest moss in the world. It can grow upto the height of 50 cm mosses now comprising Bryophyte. These are approximately 12,000 species of bryophytes. They are also used commercially for the decorative purposes such as in gardens and in the florist trade. They have traditional use also includes insulation and ability to absorb liquids up to 20 times their weight.