Explanation

• Fish survival decreases due to the decomposition of organic matter.
• When organic matter increases, bacteria decompose it and consume dissolved oxygen.
• Low oxygen levels make it difficult for fish to breathe.
• This can lead to fish stress or even fish kills.
• Excess organic matter also reduces overall water quality.

Last verified on 11-07-2026

Explanation

• Geobacillus stearothermophilus is the standard biological indicator used to test the effectiveness of an autoclave.
• Its heat-resistant spores are difficult to kill, making them ideal for sterilization testing.
• If the spores are destroyed, the autoclave is functioning properly.
• It is widely used in hospitals, laboratories, and pharmaceutical industries.

Last verified on 11-07-2026

Explanation

• The collective term for all the petals of a flower is called the Corolla.
• The corolla is usually brightly colored to attract pollinators such as insects and birds.
• It is the second whorl of a flower, located inside the calyx.
• Petals help in the process of pollination.

Additional information:

• Calyx → Collective term for sepals
• Androecium → Male reproductive part (Stamens)
• Gynoecium (Pistil) → Female reproductive part (Carpels)

Last verified on 10-07-2026

Explanation

• Pineapple is also known as "Ananas".
• Scientific Name: Ananas comosus
• Plant Family: Bromeliaceae
• Type: Tropical fruit

Last verified on 09-07-2026

Explanation

• Sucrase (Invertase) hydrolyzes sucrose into glucose and fructose.
• Sucrase is a digestive enzyme found in the small intestine.
• It breaks the glycosidic bond of sucrose by adding water (hydrolysis).
• The products are one molecule of glucose and one molecule of fructose.
• These simple sugars are then absorbed into the bloodstream.

Last verified on 09-07-2026