Explanation

• Mount Everest is the Highest peak in the world.
• It is located in Nepal.
• Height: 8,848.86m (29,032 feet)
• The first time expedition in 1953.
• It was named after George Everest in 1856.
• In the range of mountains: the Himalayas.

Additional information:

• First climbers to reach Mount Everest (1953): Tenzing Norgay and Edmund Hillary.
• First man to climb Mount Everest twice: Nawang Gombu.
• First Pakistani woman to scale Mount Everest: Samina Baig.
• First blind Asian and third person in the world to climb Everest: Zhang Hong.
• Youngest Pakistani to summit Everest: Shehroze Kashif.
• Fastest woman to climb Mount Everest: Tsang Yin-hung.

Last verified on 16-06-2026

Explanation

• Herpetology is the branch of zoology that studies reptiles and amphibians.
• Reptiles include: snakes, lizards, crocodiles, turtles.
• Amphibians include: frogs, toads, salamanders.
• The word comes from Greek “herpeton” meaning creeping animal.

Last verified on 09-06-2026

Explanation

• Syncytial theory explains the origin of multicellular animals (metazoa).
• It suggests that metazoans evolved from a multinucleated single cell (syncytium).
• Cell membranes later formed around nuclei to create separate cells.
• It explains early evolution of multicellular organisms.

Last verified on 04-06-2026

Explanation

• In dragonfly, the circulatory system does not transport gases.
• Gas exchange occurs through a tracheal system.
• Air directly reaches tissues through spiracles and tracheae.
• Blood is not involved in oxygen transport.

Last verified on 04-06-2026

Explanation

• Bronchioles are the narrowest and most numerous air passages in lungs.
• They branch from bronchi and lead to alveoli.
• They help in controlling airflow in the lungs.
• They are an important part of the respiratory system.

Last verified on 04-06-2026

Explanation

• Zymogen cells are found in the stomach lining.
• They secrete inactive enzyme precursors called zymogens.
• These are activated into digestive enzymes in the stomach.
• They help in protein digestion.

Last verified on 04-06-2026

Explanation

• Trichinosis is a disease caused by a parasitic worm.
• It is caused by Trichinella spiralis.
• It spreads through undercooked or infected meat.
• It affects muscles and digestive system in humans.

Last verified on 04-06-2026

Explanation

• Lactate is produced during anaerobic respiration.
• It accumulates in erythrocytes and microorganisms without oxygen.
• Glucose is broken down without full oxidation.
• This process is called lactic acid fermentation.

Last verified on 04-06-2026

Explanation

• Jellyfish are bioluminescent organisms.
• They belong to Cnidaria, and some ctenophores also show light production.
• Bioluminescence means production of light by living organisms.
• It helps in defense, attraction, and communication.

Last verified on 04-06-2026

Explanation

• RNA is formed from DNA during transcription.
• In RNA, thymine (T) is replaced by uracil (U).
• DNA base pairing rules are followed in complementary form.
• So TAGC in DNA becomes AUCG in RNA.

Last verified on 04-06-2026