Assertion: Senescence is the time when age-as | vedclass

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(A) Senescence refers to the period of decline in biological functions associated with aging,where age-related defects become apparent.The programmed

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

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(A) Senescence refers to the period of decline in biological functions associated with aging,where age-related defects become apparent.The programmed senescence theory suggests that aging is genetically controlled,involving the sequential activation (switching on) and inactivation (switching off) of specific genes throughout an individual's lifespan.Therefore,the Reason correctly explains why senescence occurs as a manifestation of these genetic changes.Thus,both Assertion and Reason are correct,and the Reason is the correct explanation of the Assertion.

$I$. Nerium	Sunken stomata	Lower epidermis of leaves to reduce loss of water
$II$. Calotropis	Non-succulent	Root cells with thickened cell walls
$III$. Peperomia	Leaf succulent	Leaf epidermal cell,store water
$IV$. Ammophila	Dicot	Curl their leaves to minimise loss of water
$V$. Tribulus	Ephemeral	Water is stored in stem

Assertion: Senescence is the time when age-associated defects are manifested.
Reason: Certain genes may be undergoing sequential switching on and off during one's life.

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Assertion: Senescence is the time when age-associated defects are manifested.Reason: Certain genes may be undergoing sequential switching on and off during one's life.