Explanation

• Malaria is caused by the parasite Plasmodium.
• It is transmitted to humans through the bite of an infected female Anopheles mosquito.
• Malaria is a parasitic disease.
• It mainly affects the liver and red blood cells.
• Common symptoms include fever, chills, headache, and sweating.

Last verified on 11-07-2026

Explanation

• Mangrove forests are found in the Indus Delta region of Sindh.
• The Indus Delta is located where the Indus River meets the Arabian Sea.
• It consists of a network of creeks, estuaries, and distributaries.

Additional information:

• Coniferous Forests → Khyber Pakhtunkhwa, Gilgit-Baltistan, AJK
• Juniper Forests → Ziarat, Balochistan
• Riverine Forests → Along the Indus River in Sindh and Punjab
• Subtropical Pine Forests → Murree, Abbottabad, Hazara region

Verified & Updated

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

Explanation

• Veal is the meat from young calves.
• It can come from calves of either sex and any breed.

Last verified on 03-07-2026

Explanation

• Peregrine Falcon is the world’s fastest bird.
• It can reach speeds of over 300 km/h (186 mph) during a hunting dive called a stoop.
• Its scientific name is Falco peregrinus.
• It is known for its exceptional speed and hunting ability.

Additional information:

• Ostrich → Largest and Fastest running bird (up to 70 km/h / 43 mph)

Last verified on 01-07-2026

Explanation

• Hydrophytes have poorly developed roots.
• Because they live in water and can absorb water directly from their surroundings.

Additional information:

Key Characteristics of Hydrophytes:

• Reduced xylem tissue
• Large air spaces in tissues (aerenchyma)
• Thin or absent cuticle
• Flexible stems and leaves

Examples include water lily and Hydrilla.

Last verified on 23-06-2026

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