wrecking crew: old building:: lysosome: damaged organelle.
A lysosome is an organelle that contains enzymes that break down and digest unneeded cellular components, such as a damaged organelle.
all living things are composed of cells
cells are the basic units of structure and function in living things
all cells are produced from other cells
The cartilage of septum!!!
The correct answer is: d) begins later in life
Eggs or female reproductive cells are formed well before birth in a huge number (primordial oocytes). But, the number of oocyte decreases after birth constantly (there are 2 million oocytes at birth and 40,000 of them in puberty). At menopause, no egg cells are left.
On the other hand, the first sperms are formed only from puberty, but the production of those cells never stops.