Question

Pea seeds grow in pods on pea plants.

Freshly picked pea seeds contain sugar. The sugar can form a polymer.
Give the structural formula of the polymer and name the other product of this polymerisation reaction.
You may represent the sugar by the formula.

Structural formula of the polymer.

Answer 1

Pea is probably the small spherical seed of fruit Pisum sativum. Pea is present inside pods, which are yellow or green in color. Pea pods are fruits botanically. Pea pods contain seeds inside. Peas are easier to grow when the weather is cooler. Pea pods are used in pastas and sauces. Usually, peas inside the shell or pods are eaten well.

Complete answer
Generally, in plants, formation of sugar takes place during the photosynthesis, which is the end of the process. Conversion of carbon dioxide and water takes place and three-carbon sugar is formed through photosynthesis. Later, the three-carbon sugar is transformed into six-carbon sugar, glucose. Initially, a five-carbon chain of sugar, ribulose bisphosphate is formed. Then, it is converted into$3$ – phosphoglycerate. Then, it is transformed into triose-phosphate, which later undergoes five transformations to give ADP-glucose. By starch, ADP-glucose is transformed into amylose starch using synthetase enzyme. All processes are a part of the Calvin cycle. The below picture depicts the structure of polymer.

Additional information:
Pea plant is an angiosperm and is an autotroph. In addition, it is a legume. Two separate layers are present in the walls of the pods. The outer layer is involved in the collection of carbon dioxide from the atmosphere. The inner layer collets carbon dioxide, which is coming off inside the pod. Peas are $C3$ plants as the produce $3$-carbon first product.

Note:
Making of sugar from carbon dioxide through the Calvin process is the phenomenon behind the formation of polymers. Rubisco enzymes are involved in the process. The Calvin cycle is not completely dependent on the process of photosynthesis. But it is reliant on the products formed during the photosynthetic process. Through the sugar, the pea plant is able to establish a symbiotic relationship with bacteria, as bacteria receives some sugar from the plant and provides nitrogen for assimilation.