What is endosperm? via cotyledons, a source of food for the embryo the leaves that are a part of the embryo the male portion of a flowering plant the female portion of a flowering plant tissue that develops into a protective seed coat surrounding the embryo

Option A

Explanation:

An endosperm is defined as the tissue which are produced inside the seeds during fertilization. As the endosperm surrounds the embryo, it acts as the food storage for the embryo and provide nutrition.

During embryo development , endosperms supports enlargement of cotyledons which helps in storage function and stores fats and starch and provide nourishment to the embryo.

for example cereal crops or grains are primarily endosperm which stores fat and starch and are edible fruits.

Hence, the correct option is A, endosperm can be a cotyledon which functions as a source of food for embryo.

answer;

c. a tree whose roots are surrounded by wet sand.

explanation;

water stress is an important factor limiting the growth and productivity of forests.water stress is the most often cited cause of poor survival and growth of woody landscape plants.

-insufficient soil moisture is the most common form of water stress, but excess moisture that leads to poor soil aeration (hypoxia) can also result in reduced plant vitality. a tree whose roots are surrounded by wet sand would be least likely to experience water stress.