MPSC

Mesophyll tissue is present in leaves. It is the tissue located between the upper and lower epidermis of a leaf and is the primary site of photosynthesis.

The mesophyll is composed of two types of cells:

• Palisade mesophyll: These cells are elongated and tightly packed, located just below the upper epidermis. They contain a high concentration of chloroplasts.
• Spongy mesophyll: These cells are more irregularly shaped and loosely packed, with large air spaces between them, which facilitate gas exchange.

Source:

• Britannica - Mesophyll

Yes, the market demand schedule typically illustrates an inverse relationship between price and quantity demanded. This relationship is a fundamental principle in economics known as the law of demand.

Here's a breakdown of why this inverse relationship exists:

• Price and Quantity: As the price of a good or service increases, the quantity demanded by consumers generally decreases, and vice versa.
• Demand Schedule: A demand schedule is a table that lists the quantity of a good or service consumers are willing and able to purchase at various prices.

The law of demand is supported by two main effects:

• Substitution Effect: When the price of a good rises, consumers may switch to cheaper alternatives.
• Income Effect: When the price of a good rises, consumers' purchasing power decreases (their real income falls), leading them to buy less of the good.

The study of chemistry spans the range from qualitative in focus to quantitative. The more qualitative chemist might work on synthesizing a new compound used in medicine, for example, while the more quantitative work can seem much like physics applied to the microscopic level of atoms and molecules.

Chemicals are everywhere and are everything. Anything you can touch or smell or see contains one or more chemicals. Many occur naturally but some are man made.

Chemists discover naturally occurring chemicals and also make new ones never seen before. Chemists study the properties of the natural and man made chemicals. This information is used to understand how some chemicals may be modified to make them more useful and they develop the methods to make the modifications.

Chemists seek to study the natural world but also seek to improve it by modification on a molecular level. Because everything is a chemical, chemistry is one of the foundations of modern industrial economies.

Advancements in the field of chemistry have brought about major improvements in our world. Improvements range from new medicines that cure disease, to new materials that make us safer and stronger, to new sources of energy that enable new activities.

No, a square matrix A is not invertible if its determinant |A| is equal to 0. A matrix is invertible (also known as non-singular or non-degenerate) if and only if its determinant is non-zero. If the determinant is zero, the matrix is singular and does not have an inverse.

Invertibility requires that the matrix represents a transformation that can be "undone." When the determinant is zero, it means the matrix collapses space (or at least reduces its dimension), making it impossible to reverse the transformation uniquely.

You can explore more about invertible matrices and their properties on websites such as:

• MathWorld: Invertible Matrix
• Wikipedia: Invertible Matrix