They are called "evergreen" plants but the leaves do fall down and get replaced, just not all at once.
When the first leaves of a plant start to change color in the fall, it is a sign that the chlorophyll in the leaves is breaking down. This process reveals other pigments in the leaves, such as carotenoids and anthocyanins, which give the leaves their autumn colors. Eventually, the leaves will fall off the plant as part of its natural cycle to prepare for winter.
Leaves fall down due to the force of gravity pulling on them.
The leaves of a green plant would typically lose the most chloroplasts as summer turns to fall. This is because chloroplasts are primarily located in the mesophyll cells of leaves, which are responsible for photosynthesis. As the days get shorter and temperatures drop in the fall, leaves begin to senesce and chloroplasts degrade or are broken down.
evergreen
simply when they droop and get attracted by gravity.
Dead leaves that fall to the ground undergo the process of decomposition. They are broken down by decomposers such as fungi, bacteria, and other organisms, which recycle the nutrients back into the soil. This helps enrich the soil and provides nutrients for new plant growth.
No cut them off
In the fall when the plant stops making chlorophyll.
The leaves fall down.
No, a weed plant would not die if its leaves fall off. The plant may undergo some stress, but it can recover and produce new leaves as long as its roots are healthy and the growing conditions are favorable.
Because there's not a lot of sun to make them greenThere is a chemical in leaves that makes them green during the summer, when the plant is thriving, but in winter or fall, the plant hibernates, which causes a chemical reaction, turning the leaves of the plant red or orange or yellow.
the katydid will never survive in the fall.