Assertion: Chasmogamous flowers require polli | vedclass

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(A) The majority of angiosperms bear $Chasmogamous$ flowers,which means the flowers expose their mature anthers and stigma to the pollinating agents.

Vedclass · Accepted Answer

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

Vedclass · Answer

(A) The majority of angiosperms bear $Chasmogamous$ flowers,which means the flowers expose their mature anthers and stigma to the pollinating agents. Therefore,they require external agents for pollination.$Cleistogamous$ flowers are those that do not open at all,meaning their anthers and stigma lie close to each other. When anthers dehisce in the closed flower buds,pollen grains come in contact with the stigma to effect pollination. Thus,they do not expose their sex organs and do not require pollinating agents.Since both statements are correct and the reason explains why $Chasmogamous$ flowers (which do expose their sex organs) require agents while $Cleistogamous$ flowers do not,the correct option is $A$.

$a$. Ornithophily	$1$. Nocturnal flower
$b$. Entomophily	$2$. Light pollens
$c$. Chiropterophily	$3$. Funnel shaped corolla
$d$. Anemophily	$4$. Pleasant fragrance and nectar

Assertion: $Chasmogamous$ flowers require pollinating agents.
Reason: $Cleistogamous$ flowers do not expose their sex organs.

Similar Questions

The insect $Blastophaga$ $grossorum$ is associated with the pollination of

Flowers,which have a single ovule in the ovary and are packed into an inflorescence,are usually pollinated by$-$

Identify the correct sequence of matches with the type of pollination and its characteristics.
$a$. Ornithophily $1$. Nocturnal flower
$b$. Entomophily $2$. Light pollens
$c$. Chiropterophily $3$. Funnel shaped corolla
$d$. Anemophily $4$. Pleasant fragrance and nectar

Insect-pollinated flowers are:

Identify the water-pollinated plant.

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Assertion: $Chasmogamous$ flowers require pollinating agents.Reason: $Cleistogamous$ flowers do not expose their sex organs.