Question

Chloroplast without grana is found in-
A. Bundle sheath cells of $C_4$ plants
B. Bundle sheath cells of $C_3$ plants
C. Mesophyll cells of all plants
D. Mesophyll cells of $C_4$ plants

Answer 1

Hint: Chloroplasts are usually found in green plants and algae. Chloroplasts are also found in photosynthetic tissues that do not appear green in color, such as brown blades of giant kelp or the red leaves of certain plants. chloroplast is a pigment based on plastid types. Chloroplasts include chlorophyll and carotenoids, which cause light energy that is essential to photosynthesis to be trapped.

Complete answer:
So, as we discussed chloroplast Majority of the chloroplast of green plants are found in the mesophyll cells of leaves. Chloroplasts are lens-shaped, oval, spherical, discoid or even ribbon-like organelles having variable length \[5 - 10{\text{ }}mm\] and width \[2 - 4mm\]. their number varies from \[1\] per cell as example – Chlamydomonas, green alga. Chloroplasts have their own DNA often known as cDNA. The true histones in red algae, similar proteins that pack each chloroplast tightly, do not include Chloroplast DNA.
A number of organized flattened membranous sacs called thylakoids are present inside the stroma. Thylakoids are arranged in stacks like the piles of coin shaped known as grana. Also, there are flat membranous tubules called the stroma lamellae which connect the thylakoids of different grana. The chloroplast stroma contains several enzymes needed for carbohydrate and protein synthesis. The membrane of thylakoids is enclosed by a space which is called lumen.
Chloroplast without grana is found in Bundle sheath cells of $C_4$ plants. Also, leucoplast is the plastid which has unpigmented organelle. It does not contain any pigment and grana. The chloroplasts without grana have been found in cells in bundles. Most of the $C_4$ plants have special leaf anatomy called Kranz anatomy.
Their vascular bundles are surrounded by two rings of cells, containing starch-rich chloroplasts lacking grana, which differ from those in mesophyll cells present as the outer ring. As we discussed that chloroplasts are required for photosynthesis mechanisms besides providing pigment to plants, now let us see how the machinery of photosynthesis works.

The correct answer is option A. Bundle sheath cells of $C_4$ plants.

Note:
Examples of $C_4$ plants include- sugarcane, maize, sorghum. The chloroplast without grana bundle sheath chloroplasts is inactive in hill reaction, whereas grana bundle sheath and grana mesophyll chloroplasts exhibit normal photosystem II. So, as we discussed which cells do not contain grana. Both mesophyll cells and bundle sheath lack.