Explanation

• A liquid is a state of matter that has a fixed volume but not a fixed shape.
• It takes the shape of its container and maintains its volume unless an external force is applied to change it.
• Solid: A solid has both a fixed shape and a fixed volume.
• Gas: A gas has neither a fixed shape nor a fixed volume. It expands to fill its container.

Explanation

• Frogs are heterotrophic animals that obtain energy by consuming other organisms, such as insects, worms, and even smaller frogs.
• They do not produce their own food like plants (producers) do, and they do not break down dead organisms like decomposers (such as bacteria and fungi) do.
• Therefore, the best description for a frog is a consumer.

Explanation

Residual volume is the amount of air that remains in the lungs after a maximum exhalation,

preventing the lungs from collapsing and allowing for continuous gas exchange.

Explanation

• The choroid is the layer of blood vessels between the sclera and retina, and it absorbs excess light.
• It preventing it from reflecting back through the retina and causing glare or haze, much like the black point in a camera.

Explanation

The correct order goes from smallest to largest: 1 millimetre (mm) = 0.1 centimetre (cm), and 1 centimetre (cm) = 0.01 meter (m).

Explanation

• Phloem is the vascular tissue.
• It responsible for transporting sugars and other organic compounds produced in the leaves (by photosynthesis) to all parts of the plant.

Explanation

• The incorrect statement about suspension is: The suspension is transparent and clear

Suspensions are typically characterized by:

• Being heterogeneous mixtures
• Having dispersed solute particles
• Having varying color and appearance throughout
• Being translucent or opaque

Explanation

• The solution is a homogeneous mixture
• In a solution the particles of solute and solvent are mixed
• The colour and appearance are same in every part of the solution
• The solution is clear and transparent

Explanation

A compound is a pure substance that contains only one type of molecule made up of atoms of more than one element.

Examples of compounds:

• Water (H2O) - Compound of Hydrogen and Oxygen
• Common salt (NaCl) - Compound of Sodium and Chlorine
• Washing soda (Na2CO3) - Compound of Sodium, Carbon, and Oxygen
• Carbon dioxide (CO2) - Compound of Carbon and Oxygen
  
• Sugar (C6H12O6) - Compound of Carbon, Hydrogen, and Oxygen

Explanation

• Reflection is the process by which light rays bounce back from a surface, without being absorbed or transmitted.
• This occurs when light hits a material object, such as a mirror, metal, or water.