Question

Chloroplasts are found in the root cells of
A. Vanda
B. Rhizophora
C. Tinospora
D. Clematis

Answer 1

Chloroplasts are referred as organelles that perform photosynthesis, where the photosynthetic pigment called chlorophyll traps the energy from sunlight, the converts and stores it in the energy-storage molecules called as ATP and NADPH by freeing oxygen from water in plant and algal cells.

Complete answer:
You already know that; Chloroplasts have an important role in the process of photosynthesis in some organisms. It absorbs the energy from sunlight and utilizes it to produce sugars.
Remember, Leaves are green in colour in the spring and summer season due to lots of chlorophyll making of chlorophyll. The summer sunlight helps to stimulate the leaves to make more chlorophyll.
Root hairs are believed to not have chloroplasts because their job is to collect water and nutrients. They don’t undergo a process called photosynthesis. Remember, like the mitochondria, chloroplasts also comprise their own DNA.
Note that, there are some of the climbers like Tinospora which have photosynthetic or assimilatory roots and the chloroplasts are present in their cortical cells. Roots which can carry out photosynthesis are termed as photosynthetic roots. This is referred to as not the common function for them but some of the plants comprise such roots and are called as aerial roots which hang in the air and therefore are exposed more to light. They comprise or develop photosynthetic (green with chlorophyll/ chloroplasts) tissue and hence carry out the function. Some examples are- Epiphytic orchids and Tinospora.

Thus, the correct answer is option C.

Additional information:
Assimilatory roots are believed to be a type of modified root which grows chlorophyll and then performs photosynthesis. They make carbon dioxide, water as well as carbohydrates in the presence of sunlight.

Note:
It is important to know that most of the cell parts (known as organelles) are almost invisible because they don’t have colour. If we look at the cells of an onion bulb, we will notice that because the onion bulb grows underground, it doesn't face any sunlight and that’s why it doesn't have any chloroplasts for photosynthesis.