Question

Gymnosperms and angiosperms have the following in common except (A) seeds. (B) pollen. (C) ovaries. (D) ovules.

Short answer

(A) The option “seeds” isfalse.

(B) The option “pollen” isfalse.

(C) The option “ovaries” istrue.

(D) The option “ovules” is false.

Step-by-step solution

Vascular plants

Plants have different parameters for classification, and one of these is the presence or absence of conducting tissues; the plants which comprise these specialized tissues are termed vascular plants. The group of vascular plants includes two different groups of plants: seed-producing and spore-producing.

Explanation of option ‘(A)’

Gymnosperms and angiosperms are both members of the vascular plant group and are categorized as seed plants. The seeds in the case of gymnosperms remain open, while in the case of angiosperms, it remains protected within a fruit.

Thus, seeds are produced by both the group of plants

Therefore, the given option is false.

Explanation of option ‘(B)’

A distinguishing feature of seed plants (both angiosperms and gymnosperms) is the exhibition of heterospory, non-identical gametic cells. In these plants, pollen refers to the structure which contains male gametic cells.

Thus, pollens are present in gymnosperms as well as angiosperms.

Therefore, the given option is false.

Explanation of option ‘(C)’

The angiosperms and gymnosperms are both seed plants but have specific differences; one of these is the presence of ovaries. This structure is only found within female angiosperm plants and stores the ovules within it.

Thus, angiosperms are the only plants that contain ovaries.

Therefore, the given option is true.

Explanation of option ‘(D)’

The structure of the seed plants that contain female gametic cells is denoted as ovules. In gymnosperm plants, it remains naked in the structure of cones, while in angiosperm plants, ovules remain within the structure of ovaries.

Thus, the presence of ovules is a common character for both seed plants.

Therefore, the given option is false.