Explanation

The K orbit, also known as the first electron shell.

• It can hold a maximum of 2 electrons.

The L orbit, also known as the second electron shell.

• It can hold a maximum of 8 electrons.

The M orbit, also known as the third electron shell.

• It can hold a maximum of 18 electrons.

Explanation

Explanation

• Fertilization is the process where a male gamete (pollen) fuses with a female gamete (ovule) to form a zygote.
• It develops into a seed and eventually a new plant.

Explanation

• Nitrogen (N2) is the most abundant constituent in air.
• Making up approximately 78% of the Earth's atmosphere.

The correct order of abundance:

• Nitrogen (N2) - 78%
• Oxygen (O2) - 21%
• Argon (Ar) - 0.93%
• Carbon Dioxide (CO2) - 0.04%

Explanation

• 6CO2 + 6H2O → C6H12O6 + 6O2
• This is the correct equation for photosynthesis, where carbon dioxide (CO2) and water (H2O) are converted into glucose (C6H12O6) and oxygen (O2) in the presence of light energy.

Explanation

• Vacuoles are small, membrane-bound sacs found in the cytoplasm of cells, which contain air, liquid, or food particles.
• They play a role in storage, digestion, and maintenance of cellular homeostasis.

Explanation

• When Earth is between the Moon and the Sun.
• It blocks the sunlight from reaching the Moon, casting a shadow on the Moon.
• This is known as a Lunar Eclipse.

Explanation

• When water evaporates, it changes from a liquid to a gas.
• This gaseous state is called water vapor.

Explanation

• In a solid, the particles are closely packed and have a fixed position.
• With a regular arrangement that gives the solid its shape and structure.

Explanation

• An iron nail/steel rod can be magnetized by passing an electric current around it, a process known as electromagnetic induction.
• This is the principle behind electromagnets.