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(A) Senescence,or old age,is characterized by the end of the reproductive phase in an organism's life cycle.During the final stage of the life span,co

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The end of the reproductive phase

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(A) Senescence,or old age,is characterized by the end of the reproductive phase in an organism's life cycle.During the final stage of the life span,concomitant changes occur in the body,such as a slowing down of metabolism,which eventually leads to death.In both plants and animals,hormones are responsible for the transitions between the three phases of life (juvenile,reproductive,and senescent).The interaction between hormones and certain environmental factors regulates the reproductive processes and governs the behavioral expressions of organisms.

Column-$I$	Column-$II$
$A$. Elephant	$a$. $1 \text{ month}$
$B$. Fruit fly	$b$. $4 \text{ months}$
$C$. Rice plant	$c$. $7-15 \text{ days}$
$D$. Butterfly	$d$. $60-90 \text{ years}$

What is senescence? What is responsible for it?

Similar Questions

Which of the following is a correctly matched pair regarding reproduction?

Which of the following statements is incorrect?

Match the following organisms with their approximate life spans:

Column-$I$ Column-$II$

$A$. Elephant $a$. $1 \text{ month}$

$B$. Fruit fly $b$. $4 \text{ months}$

$C$. Rice plant $c$. $7-15 \text{ days}$

$D$. Butterfly $d$. $60-90 \text{ years}$

$A$ bacterial cell divides every $1$ minute. It takes $15$ minutes for a cup to be one-fourth full. How much time will it take to fill the cup?

Which is a better mode of reproduction: sexual or asexual? Why?

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