Question

When green tomatoes turn red then
(a) New chloroplast are made
(b) Chromoplasts are changed into chloroplasts
(c) Chloroplasts are disintegrated and get converted into chromoplasts
(d) None of the above

Answer 1

When green tomatoes turn red they denote the ripening process. They have organelles when they are green, which assists in the photosynthesis process. They give rise to non-green colored plastids during their transformation into the red.

Complete answer:
Non-green colored plastids are chromoplasts. They contain carotenoids known as colored pigments. For pollination and fruit dispersal, the chromoplasts are important. During fruit ripening, the transition of fruit color from green to purple, red, or orange is due to the conversion of chloroplasts to chromoplasts.
It provides the fruits with color, e.g., tomato and chili fruit ripening. When fresh, the fruits that are green in color produce large quantities of chloroplasts, which eventually disintegrate and are replaced by chromoplasts during the ripening phase.
The two pigments tomato use for photosynthesis, will provide for their color-changing transformation: chlorophyll and lycopene. Green is chlorophyll, and red is lycopene.
When tomatoes first start growing, they mainly contain chlorophyll. You see, that gives them their green color when they're on the vine. However, as they age, a transition starts to take place.
Days get shorter as harvest time comes and temperatures drop. Chlorophyll begins to dissolve as this occurs, and lycopene takes over. You can watch this process grow from the outside, as the red coloring of the lycopene gradually transforms tomatoes from green to red.
For this transformation to commence, tomatoes must be at the mature green stage. Tomatoes start developing an odorless, tasteless, and invisible chemical gas called ethylene at that point. In tomatoes and other fruits, ethylene gas activates the ripening process. It is, for instance, the reason why bananas bruise. Tomatoes often get softer as their sugar levels increase and their acid levels fall, making them ready to eat, in addition to turning red.

So, the correct answer is, ‘Chloroplasts are disintegrated and get converted into chromoplasts’.

Note:
In cells, the food produced is through chloroplast and is found only in plant cells while it is absent in the case of the animal cells. The chloroplast results in the formation of sunlight into sugars which are stored in the plants and are used in various metabolic functions. This process is termed photosynthesis where the leaves of the plants make their own food.