Explanation

• Glycolysis is the common initial stage of both aerobic and anaerobic respiration.
• It occurs in the cytoplasm and breaks one glucose molecule into two molecules of pyruvate, producing a net gain of 2 ATP and 2 NADH.
• In aerobic respiration, pyruvate is generally further broken down through aerobic pathways.
• In anaerobic conditions, it may undergo fermentation or other processes to regenerate NAD⁺.

Last verified on 27-10-2026

Explanation

• Cauliflower is an immature, compact flower head (inflorescence) used as a vegetable.
• It consists of many undeveloped flower buds packed closely together.
• The edible part is mainly the fleshy, immature inflorescence.
• Cauliflower belongs to the family Brassicaceae, which also includes cabbage, broccoli, and mustard.

Last verified on 27-10-2026

Explanation

• Pinus is a gymnosperm that produces abundant yellow pollen grains, which may be released in large quantities during pollination.
• The yellow pollen falling from pine trees can resemble a shower of yellow powder, giving rise to the term “sulphur shower.”
• Pinus is wind-pollinated, so its lightweight pollen grains are carried by air currents.

Last verified on 27-10-2026

Explanation

• A phyllode is a flattened, leaf-like modified petiole that performs photosynthesis.
• In plants such as Acacia, the true leaves may be reduced, while the flattened petiole performs the leaf’s photosynthetic function.
• Phyllodes help reduce water loss in some plants adapted to dry environments.

Last verified on 27-10-2026

Explanation

• A facultative parasite normally lives as a parasite but can also survive independently as a saprophyte by obtaining nutrients from dead and decaying organic matter.

Additional information:

• An obligate parasite depends on a living host to complete its life cycle or survive and reproduce.
• A facultative saprophyte is the opposite: it normally lives on dead organic matter but can become parasitic under suitable conditions.

Last verified on 27-10-2026

Explanation

• Ringworm is a fungal infection caused by dermatophytes, including Microsporum, Trichophyton, and Epidermophyton.
• Despite its name, ringworm is not caused by a worm.
• It often produces a circular, red, itchy rash on the skin.
• The infection may affect the scalp, body, feet, or groin, depending on the site of infection.

Last verified on 27-10-2026

Explanation

• Density is the mass per unit volume of a substance.
• Density is calculated by dividing the mass of a substance by its volume.
• The SI unit of density is kilogram per cubic metre (kg/m³).

Last verified on 25-10-2026

Explanation

Explanation

• Blue light has the shortest wavelength.
• In the visible spectrum, wavelength decreases from red to violet.

Additional information:

• Red light rays have the lowest frequency and highest wavelength value.

Last verified on 10-06-2026

Explanation

• Power and Mass is a scalar quantity because it has only magnitude.
• Power describes the rate of doing work in physics.
• It is measured in watts (W).

Additional information:

• Scalar quantities include: mass, time, temperature, energy.
• Vector quantities include: displacement, velocity, acceleration, force.

Last verified on 17-06-2026