imagination - the formation of a mental image of something that is not perceived as real and is not present to the senses; popular imagination created a world of demons; imagination reveals what the world could be. imaginativeness, vision. creative thinking, creativeness, creativity - the ability to create.
Definition of the Cortex. Let's explore the cortex layer in more detail. The cortex is defined as root and stem tissue found between the epidermis and vascular tissue of a plant. When you eat potatoes or carrots you are actually eating the root of a plant's cortex.
What is the central vacuole of a plant cell? Quick Answer. Central vacuoles are important organelles in plant cells that store sugar, ions and water for plants, regulate waste and help plants retain their shape. Central vacuoles exist in all plant cells, surrounded by a thin layer of a single membrane.