Question

Scutellum is present in the embryo of:
A. Pea                  
B. Ranunculus
C. Triticum     
D. None of these

Answer 1

Hint: One theory holds that the scutellum is a modified cotyledon, or seed leaf (from the Latin scutella, meaning little shield). This seed leaf in grasses never becomes a green structure; instead, it simply functions to break down endosperm and distribute nutrients to the rest of the embryo.

Step by step solution:
It is well known that barley and rice seeds have scutellum as a structural component. The term "scutellum" can also be used to describe a monocot's equivalent of a narrow cotyledon. It functions to absorb nutrients from the endosperm during germination and is extremely thin with a high area.
The plumule is a component of a seed embryo that grows into a stalk that bears the plant's primary true leaves. The plumule in most seeds, like the sunflower seed, is often a little conical structure devoid of any leaf structure. The cotyledons must have grown above the ground before the plumule can begin to grow. Cotyledons are seed-bearing plants' embryonic leaves, and one or more of them emerge as the first leaves from the germination of a seed. After fertilisation, the endosperm is a tissue that develops inside the seeds of most flowering plants. It is known to be triploid in the majority of the species. Though it may also contain oils, it surrounds the embryo and supplies sustenance in the form of carbohydrates.
The protein known as an aleurone layer is present in the protein granules of developing seeds and tubers. The name also refers to the aleurone layer, one of the endosperm's two main cell types. The inner starchy endosperm is found beneath the aleurone layer, which is the outermost layer of the endosperm.
The scutellum is usually present in the seeds of the monocotyledons. Some examples of monocotyledons are corn, grass, wheat, coconut, etc.

So, option C is correct.

Note: It is thought that the scutellum contains an unnamed protein transporter that makes it easier for seeds to travel from the endosperm to the embryo. Only endosperm digestion and nutrition delivery to the remaining embryo are its functions.