The hormone that stimulates the formation of red blood cells is: MCQ with Answer and Explanation

Explanation:
Cytokinins are plant hormones that primarily promote cell division (cytokinesis) in the presence of auxins. They are also crucial in delaying senescence (aging) of leaves by helping to maintain protein and nucleic acid content, a phenomenon known as the Richmond-Lang effect. They are synthesized mainly in root apices.

Explanation:
The femur (thigh bone) is the longest, strongest, and heaviest bone, supporting body weight during standing and walking.

Explanation:
Plague is a severe zoonotic bacterial disease caused by Yersinia pestis. It is primarily transmitted to humans through the bite of infected rat fleas, most commonly Xenopsylla cheopis. The disease has three main forms: bubonic (swollen lymph nodes), pneumonic (lungs), and septicemic (blood). Tuberculosis is airborne, leprosy is transmitted via prolonged close contact, and tetanus enters through deep wounds.