Explanation

Ichthyology is the study of fish. 

It is a branch of zoology that deals with the biology, taxonomy, behavior, physiology, ecology, and anatomy of various fish species

Additional information:

• Agrostology: Study of Grasses 
• Agronomy: soil management and crop production 
• Odontology: study of teeth 
• Arthrology: Study of joints 
• Nephrology: study of kidneys
• Hematology: Study of blood  
• Dermatology:  Study of skin 

Last updated 17-02-2026

Explanation

• Humidity means the amount of water vapor in air.
• It is measured using a psychrometer.
• A psychrometer has two thermometers: dry bulb and wet bulb.

Additional information:

• A psychrometer is a type of hygrometer.
• It helps in weather forecasting and climate studies.

Last verified on 12-02-2026

Explanation

• Arthropods are divided into different classes based on body structure, legs, and antennae.
• Spiders, ticks, and mites have eight legs and no antennae, which classifies them differently from insects.
• These belong to the class Arachnida.

Last verified on 11-02-2026

Explanation

• Chloroplast is the plant cell organelle that performs photosynthesis.
• It contains chlorophyll, the green pigment that captures sunlight to produce food (glucose) for the plant.

Additional information:

• Mitochondria: Powerhouse of the cell, produces energy via respiration
• Nucleus: Controls cell activities and stores DNA

Last verified on 11-02-2026

Explanation

Boiling milk is primarily a method of preservation

Because the high heat kills harmful bacteria and microorganisms that cause spoilage.

By destroying these pathogens,

The milk's shelf life is extended, making it safe for consumption for a longer period. 

Explanation

• Taxonomy is the science of classifying and naming organisms.
  • Helps organize plants, animals, and microorganisms into groups.
  • Based on shared characteristics, genetics, and evolutionary relationships.
  • Developed initially by Carl Linnaeus in the 18th century.

Last verified on 06-02-2026

Explanation

• Olericulture is the science and practice of growing vegetables.
• It involves planting, cultivation, harvesting, and storage of vegetables.

Additional information:

• Pomology – fruit cultivation
• Floriculture – flower cultivation
• Arboriculture – tree cultivation
• Viticulture – grape cultivation

Last verified on 06-02-2026

Explanation

Mangroves are salt-tolerant trees that grow in coastal areas, especially in muddy shores and river deltas.

Mangrove plant families first appeared during the Late Cretaceous 

Explanation

• Definition: Rearing silkworms to produce silk
  • Main Insect: Bombyx mori (mulberry silkworm)
  • Main Food: Mulberry leaves
  • Output: Silk fiber from cocoons
  • Major Producers: China, India, Uzbekistan, Thailand, Vietnam

Last verified on 05-02-2026

Explanation

Mature crop cutting refers to harvesting crops when they are fully grown and ripened to measure yield and plan storage.