What is the first infective stage of malarial parasite in man?

Explanation

**Step-by-Step Solution:**

1. **Understanding Malaria**: Malaria is a disease caused by protozoan parasites belonging to the genus *Plasmodium*. It is transmitted to humans through the bite of infected female Anopheles mosquitoes.

2. **Identifying the Causative Agent**: The *Plasmodium* species are responsible for malaria. There are several species, including *Plasmodium falciparum*, *Plasmodium vivax*, *Plasmodium ovale*, and *Plasmodium malariae*, each causing different types of malaria.

3. **First Infective Stage**: The question specifically asks for the first infective stage of the malarial parasite in humans. When an infected Anopheles mosquito bites a human, it injects the parasite in the form of sporozoites.

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