Question

Select the incorrect statements.

$\left(a\right)$ Sporophyte of liverworts is more elaborate than that of mosses

$\left(b\right)$ Salvinia is heterosporous

$\left(c\right)$ Life of all seed plants is diplontic

$\left(d\right)$ In Pinus, male and female cones are borne on different trees

• A. $a,c$
• B. $a,d$
• C. $b,c$
• D. $a,b$

Answer 1

The correct option is B $a,d$

Incorrect statements

Statement $\left(a\right)$ : Sporophyte of liverworts is more elaborate than that of mosses
Sporophyte in both the liverworts and mosses is attached to the gametophyte body and it depends on the main gametophytic plant body for survival. It is differentiated into foot, seta and capsule. Capsule contains the haploid spores. But the sporophytes of the mosses are more elaborated as compared to the sporophytes of liverwort as they have an elaborated mechanism of the dispersal of spores. In some liverworts such as that of Riccia, only capsule is present in the sporophyte and the foot and seta are absent. Hence, the statement $\left(a\right)$ is incorrect.

Statement $\left(d\right)$ : In Pinus, male and female cones are borne on different trees Pinus is a monoecious plant as it has both male and female cones present on the same plant. Hence, statement $\left(d\right)$ is incorrect.

Final answer
$c)a,d$