Explanation

A step-up transformer increases the voltage of the input signal, resulting in a higher voltage output.

This is achieved by having more turns in the secondary coil than in the primary coil.

Explanation

Explanation

Soil fertility is the ability of a soil to sustain agricultural plant growth.

It is maintained without addition of nutrition due to microbial activity.

Microbes increase the amount of nutrients in soil available for plants.

Explanation

Independent assortment of genes and their corresponding traits was first observed by Gregor Mendel in 1865 during his studies of genetics in pea plants.

Explanation

• Self-Pollination is the transfer of mature pollen grains from the anther of one flower to the stigma of the same flower or another flower of the same plant.
• This means that the pollen is transferred within the same plant, allowing for fertilization to occur without the involvement of another plant.

Explanation

An isobar is an imaginary line that connects places of equal barometric pressure.

They can be used to find areas of low or high pressure over a large area.

Explanation

• Athlete's foot is a common fungal infection caused by fungi such as Trichophyton, Epidermophyton, and Microsporum.
• Rashes can be caused by various factors, including fungal infections. For example, ringworm (a fungal infection) can cause a rash.

Explanation

• The freezing point of water is 0°C (zero degrees Centigrade). 
• The boiling point of water on the Centigrade scale (also known as the Celsius scale) 100°C (one hundred degrees Centigrade).

Explanation

• The speed of sound in air at 0°C (32°F) is 332 meters per second.

The speed of sound in different materials:

• Air: 332 m/s
• Sea water: 1530 m/s
• Lead: 2160 m/s
• Gold: 3240 m/s
• Brick: 3650 m/s
• Copper: 4760 m/s
• Glass: 5100 m/s
• Aluminium: 6420 m/s

Explanation

• The endosperm is the main storage tissue in maize seeds.
• It containing nutrients like starch, proteins, and oils.
• It support the growth of the embryo during germination.