**Core Concept**
P. Falciparum is a species of Plasmodium that causes the deadliest form of malaria. It is characterized by its ability to invade and infect red blood cells (RBCs) of all ages, leading to severe complications such as cerebral malaria.

**Why the Correct Answer is Right**
The correct answer is related to the fact that P. Falciparum has a unique life cycle that involves invasion of RBCs. This parasite has a specialized protein called PfEMP1 (Plasmodium falciparum erythrocyte membrane protein 1) that allows it to bind to the RBC membrane, evade the spleen, and maintain a long-term infection in the host. This leads to a high level of parasitemia and a severe clinical presentation.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because while P. Falciparum can cause severe malaria, it is not the only species to do so. Other species like P. vivax and P. ovale can also cause severe disease, although it is less common.

**Option B:** This option is incorrect because P. Falciparum is not known to be transmitted through the bite of an infected mosquito. The primary mode of transmission is through the bite of an infected female Anopheles mosquito.

**Option C:** This option is incorrect because P. Falciparum is not known to cause a specific type of anemia. While it can cause hemolysis and anemia, this is not a unique feature of P. Falciparum.

**Clinical Pearl / High-Yield Fact**
P. Falciparum is responsible for the majority of malaria-related deaths worldwide. Early recognition and treatment of P. Falciparum infection are critical to prevent severe complications and mortality.

**Correct Answer:** D