Explanation

• Grasslands, also known as prairies or savannas, are areas with lower rainfall than forests, typically between 50-200 mm annually.
• This lower rainfall doesn't support the growth of trees, but instead favors grasses and other herbaceous plants.

Explanation

• Flowers are the reproductive structures of plants, and they produce seeds through sexual reproduction.
• This process involves the fusion of male and female gametes (pollen and ovules) to form a zygote, which develops into a seed.

Explanation

• Phosphorus-32 is used to study the uptake of phosphorus-containing fertilizers.
• This radioactive isotope helps in tracing and measuring the absorption and movement of phosphorus within plants.

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

• A series circuit is a circuit that provides only one path for the current to flow.
• If one component is removed or fails, the entire circuit is interrupted.

Explanation

• Frequency is the number of vibrations or oscillations produced by a vibrating body in one second.
• It's measured in Hertz (Hz), where 1 Hz equals one vibration per second.

Explanation

• The electrons that have been knocked out of the outermost shell of an atom are free electrons, which are able to move freely and conduct electricity.

Explanation

• Carbon dating is used to estimate the age of fossils.
• Those that are less than 60,000 years old.
• It is composed of organic materials like wood or leather.