Explanation

• Some organisms feed on dead and decaying organic matter instead of living organisms.
• These organisms are called saprotrophs.
• They play an important role in decomposition and nutrient recycling in ecosystems.
• Examples include fungi, bacteria, and some protists.

Last verified on 01-02-2026

Explanation

• In maize (Zea mays), the first structure to emerge from the seed during germination is the radical root.
• It is also known as the primary root.
• This root grows downward into the soil, anchoring the seedling and absorbing water and nutrients.

Last verified on 01-02-2026

Explanation

There are four fundamental states of matter: solid, liquid, gas and plasma

1. Solid: Fixed shape and volume; particles tightly packed.
2. Liquid: Fixed volume but takes container's shape; particles close but move.
3. Gas: No fixed shape or volume; particles far apart and move freely. 
4. Plasma: Ionized gas, found in stars, lightning; electrically charged.

Explanation

• Transpiration is the process by which plants lose water in the form of vapor from leaves, stems, and flowers.
• It helps in cooling the plant, nutrient transport, and maintaining water balance.

Additional information:

• Evaporation: Water loss from soil or water surfaces
• Respiration: Energy release by breaking down sugars
• Photosynthesis: Production of food using sunlight, CO₂, and water

Last verified on 27-01-2026

Explanation

Bees must collect nectar from approximately 2 million flowers to make 1 pound of honey.

This immense effort requires bees to fly roughly 55,000 to 90,000 miles

A honey bee visits 50 to 100 flowers during a single,, dedicated collection trip.

Production Context: It takes approximately 556 worker bees to gather enough nectar for 1 pound of honey. 

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.

Last verified on 22-01-2026

Explanation

Our solar system takes approximately 225 to 230 million Earth years to complete one full orbit around the center of the Milky Way galaxy,

A period known as a galactic year or cosmic year. 

Traveling at about 514,000 mph (828,000 km/h)

Given the Sun's age, it has circled the galactic center about 20 times. 

Explanation

Explanation

The outermost layer of the Sun is called the corona.

It is the Sun's outer atmosphere, extending millions of kilometers into space and visible during a total solar eclipse.

The innermost layer is the core, where nuclear fusion occurs.

Explanation

• Main Cause: Freon / CFCs
• Effect: Breaks down O₃ molecules → more UV-B radiation
• Other Contributors: Halons, carbon tetrachloride
• Result: Skin cancer, cataracts, climate impact

• The Montreal Protocol (1987) aimed to reduce CFC emissions
• Ozone layer protects Earth from harmful ultraviolet rays