Question

Which of the following plants do not produce seeds?
A. Ficus and Funaria
B. Fern and Funaria
C. Chlamydomonas and Ficus
D. Pumice and Pinus

Answer 1

Hint: An embryonic plant that is enclosed on an external protective cover is seed. The production of the seed is a step in the process of cultivating the seed plant. The ripened ovule forms following the fertilization and some development in the mother plant seeds.

Complete answer: The embryo is produced by the zygote and the ovule integuments to form the seed coat. A common seed has two important components: an embryo and a seed coat. Gymnosperms are those flowerless plants which in turn produce cones and seeds. Since gymnosperm seeds are not found in an ovary, the word 'gymnosperm' means ‘naked seed '. Typically, these are subjected to leaf-like structures referred to as bracts. Vascular plants that distribute spores (with xylem and phloem) are pteridophytes. They are also known as cryptogams since the pteridophytes do not bear flowers or seeds, so their reproductive means are hidden. Bryophytes are an informal class of non-vascular soil plants including liverworts, hornworts, and mosses. They are characteristically small in size and prefer moist conditions, but they can survive in drier settings. Closed reproductive structures are produced by bryophytes but perhaps not flowers or seeds. They reproduce by means of spores. Thallophytes are mainly referred to as thalloid, relatively simple plants, or lower plants, as non-mobile organisms. Thallophytes have a secret reproductive system and are therefore also integrated with ferns. Fern and Funaria belong, respectively, to pteridophytes and bryophytes. So, by producing seeds, they do not reproduce.
Hence, the correct option is B- Fern and Funaria.

Note: Within the seed coat, there are two separate regions, one upper-larger endosperm one, and a smaller endosperm seed embryo. The embryo is the fertile ovule through which, under good conditions, a new plant emerges. The embryo has one cotyledon in monocotyledons; two cotyledons in almost every dicotyledon, and two or more in gymnosperms.