Differentiate between Senescence and Ageing.

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(N/A) SenescenceAgeing$(1)$ It refers to all collective,progressive,and deteriorative processes which ultimately lead to a complete loss of organizati

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(N/A) SenescenceAgeing$(1)$ It refers to all collective,progressive,and deteriorative processes which ultimately lead to a complete loss of organization and function.$(1)$ It includes all the chemical and structural changes that occur during the life span of a plant or its organ.$(2)$ It includes only degenerative and deteriorative changes in a plant or its parts.$(2)$ It is the sum total of metabolic changes that occur in a plant or its parts.$(3)$ Senescence occurs as a result of ageing and leads to death.$(3)$ Ageing is a permanent feature of all living organisms.

$I$. 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

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Senescence	Ageing
$(1)$ It refers to all collective,progressive,and deteriorative processes which ultimately lead to a complete loss of organization and function.	$(1)$ It includes all the chemical and structural changes that occur during the life span of a plant or its organ.
$(2)$ It includes only degenerative and deteriorative changes in a plant or its parts.	$(2)$ It is the sum total of metabolic changes that occur in a plant or its parts.
$(3)$ Senescence occurs as a result of ageing and leads to death.	$(3)$ Ageing is a permanent feature of all living organisms.