Assertion : Like pteridophytes,sporophyte is | vedclass

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Question

(B) In both $Pteridophytes$ and $Gymnosperms$,the plant body is a $Sporophyte$ $(2n)$,which is the dominant phase of the life cycle.In $Pteridophytes$

Vedclass · Accepted Answer

Both assertion and reason are true and reason is not a correct explanation of the assertion.

Vedclass · Answer

(B) In both $Pteridophytes$ and $Gymnosperms$,the plant body is a $Sporophyte$ $(2n)$,which is the dominant phase of the life cycle.In $Pteridophytes$,the $Gametophyte$ (prothallus) is small,multicellular,and usually independent (free-living).However,in $Gymnosperms$,the $Gametophyte$ is highly reduced and dependent on the $Sporophyte$ for nutrition and protection.Therefore,the assertion is true because the $Sporophyte$ is indeed the dominant phase in both groups.The reason is also true because $Pteridophyte$ gametophytes are indeed independent.However,the independence of the gametophyte in $Pteridophytes$ does not explain why the $Sporophyte$ is dominant in $Gymnosperms$.Thus,both are true,but the reason is not the correct explanation for the assertion.

$X$ (Feature)	$Y$ (Plant)
$1.$ Christmas tree	$p.$ Rhynia
$2.$ Fossil pteridophyte	$q.$ Araucaria
$3.$ Haplodiplontic life cycle	$r.$ Ectocarpus
$4.$ Diplontic life cycle	$s.$ Fucus

Column-$I$	Column-$II$
$(A)$ Sequoia sempervirens	$(p)$ Smallest gymnosperm
$(B)$ Wolffia globosa	$(q)$ Tallest plant of Australia
$(C)$ Zamia pygmaea	$(r)$ Tallest inflorescence
$(D)$ Eucalyptus (Nilgiri)	$(s)$ Tallest tree in the world
$(E)$ Rafflesia arnoldii	$(t)$ Smallest angiosperm
$(F)$ Agave (Ramban)	$(u)$ Largest flower

Assertion : Like pteridophytes,sporophyte is a dominant phase in gymnosperms.
Reason : The gametophyte stages are independent in the pteridophytes.

Similar Questions

Which option correctly matches the features given in $X$ with the plants given in $Y$?
$X$ (Feature) $Y$ (Plant)
$1.$ Christmas tree $p.$ Rhynia
$2.$ Fossil pteridophyte $q.$ Araucaria
$3.$ Haplodiplontic life cycle $r.$ Ectocarpus
$4.$ Diplontic life cycle $s.$ Fucus

Which of the following forms contain algae?

Which groups depend on an external source of free water for fertilization?

$Cycas$ and $Adiantium$ resemble each other in having:

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Assertion : Like pteridophytes,sporophyte is a dominant phase in gymnosperms.Reason : The gametophyte stages are independent in the pteridophytes.