Explanation

Horses have a unique anatomy and a stay apparatus

That allows them to sleep standing up, but they lack the anatomical structure (a proper “down apparatus”) to sit like dogs or cats. 

Explanation

The animal that uses echolocation for movement is the bat. 

Bats use high-frequency sound waves to navigate

And find food in the dark by emitting sounds

And then listening to the echoes that bounce back off objects. 

Explanation

Brucellosis is a bacterial infection treated primarily with antibiotics.

Common drugs include doxycycline and rifampin to eliminate the bacteria.

Explanation

A 0.9% NaCl solution is isotonic to mammalian red blood cells (RBCs).

It prevents osmotic swelling or shrinking of RBCs during intravenous use.

Explanation

Cephalosporins inhibit bacterial cell wall synthesis, making them effective against many Gram-positive and Gram-negative bacteria.

They work similarly to penicillins, targeting peptidoglycan layer formation.

Explanation

Intradermal injection means the drug is injected into the dermis, the layer just beneath the epidermis.

It is commonly used for allergy tests and tuberculosis screening.

Explanation

The standard incubation period for a chicken egg is 21 days under optimal temperature and humidity.

Hatching usually begins on day 21 if properly incubated.

Explanation

Active immunity is developed when the body’s immune system responds to an infection by producing its own antibodies.

Passive immunity occurs through injection or transfer of antibodies, but active immunity requires antigen exposure.

Explanation

Hemorrhagic Septicemia in buffaloes is caused by Pasteurella multocida.

It is a highly fatal bacterial disease causing septicemia and hemorrhages.

Explanation

An ulcer is a wound that fails to heal and often becomes chronic.

Unlike contaminated or infected wounds, ulcers persist over time with tissue loss.