Question

Cholroplasts are green in colour.why?

Answer 1

Because they absorb blue and red light but don't absorb green light thus reflecting it back which is the colour we see......
hope it helps you

Answer 2

Chloroplast:

$\bullet$ They are membranous structures (organelles) present in plant cells.

$\bullet$ Chloroplast contains:

$\implies$ Chlorophyll

$\implies$ Photosynthetic pigments

$\bullet$ This pigment helps the plant in making its own food through photosynthesis.