Explanation

• The cortex is the layer of tissue between the epidermis (outermost layer) and endodermis (inner layer) in plant roots.
• It's a region of parenchymatous cells that stores food, water, and nutrients.

Explanation

All three processes allow movement in and out of cells:

• Osmosis: Movement of water molecules from high concentration to low concentration through a selectively permeable membrane.
• Diffusion: Random movement of molecules from high concentration to low concentration until equilibrium is reached.
• Active transport: Movement of molecules from low concentration to high concentration using energy (ATP) to pump molecules across the cell membrane.

Explanation

• Tables and graphs are both essential methods for organizing and visualizing data, and they complement each other.

Tables are useful for:

• Displaying precise values and data points
• Organizing large datasets
• Performing calculations and data analysis

Graphs are useful for:

• Visualizing trends and patterns
• Displaying relationships between variables
• Communicating complex data insights effectively

Explanation

 A solution that has a relatively less amount of solute in comparison to the solvent is called a dilute solution.

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ND20-1-2023

Explanation

Leukemia is a type of cancer that affects the blood, bone marrow, and lymphatic system.

It occurs when there is an abnormal growth of white blood cells, which can crowd out healthy cells and platelets.

Explanation

The pancreas secretes pancreatic juice, which contains a variety of enzymes that help break down carbohydrates, proteins, and fats in the small intestine.

These enzymes include amylase, lipase, trypsin, and chymotrypsin, among others.

Explanation

A scientific law is a statement that describes a consistent and universal pattern of natural behavior.

It is often considered an irrefutable theory.

Examples of scientific laws include the Law of Gravity, the Laws of Motion, and the Law of Conservation of Energy.

Explanation

The commutator is a crucial component in a DC motor that reverses the direction of current through the coil every half-cycle.

It is a mechanical switch that rotates with the armature.

It makes contact with the brushes, switching the current flow to the coil as the armature rotates.

Explanation

• When a light ray enters from a denser medium to a rarer medium, it bends away from the normal (a line perpendicular to the surface).

Key Points:

• Denser to rarer: Away from normal
• Rarer to denser: Toward normal

Explanation

In a concave mirror, the image size depends on the position of the object.

As the object moves closer to the mirror, the image size increases, and as it moves away, the image size decreases.