Okay, let's tackle this question about Anopheles mosquitoes. The question is asking which statement is NOT true regarding them. First, I need to recall the key facts about Anopheles mosquitoes. They are the vectors for malaria, right? So any correct answer should align with their role in transmitting Plasmodium parasites.

The core concept here is the biology and behavior of Anopheles mosquitoes. They are known for their nocturnal activity, preference for clean water breeding sites, and their role in malaria transmission. Also, their resting positions are distinct—female Anopheles rest with their bodies parallel to the wall, unlike Aedes which rest at an angle.

Now, looking at the options, the correct answer is the one that's false. Let's think of common misconceptions. For example, if an option says they are active during the day, that's incorrect because they're primarily nocturnal. Another possible wrong answer is about the type of water they breed in. Anopheles prefer clean, stagnant water, so if an option mentions polluted water, that's wrong. Also, their resting behavior is a key point. If an option states they rest with their bodies at an angle, that's incorrect; that's Aedes.

Clinical pearl: Remember the ABCD of Anopheles versus Aedes. A for Anopheles: Active at night, Breeds in clean water, Crawls with body parallel. D for Aedes: Daytime active, Dirty water, Rests at an angle. This helps differentiate them in exams.

So, the correct answer would be the one that contradicts these facts. Let's structure the explanation with each section as per the guidelines.

**Core Concept**
Anopheles mosquitoes are the primary vectors of *Plasmodium* species causing malaria. They exhibit distinct behavioral and ecological traits, including nocturnal feeding, preference for clean stagnant water for breeding, and a characteristic resting posture (body parallel to surfaces).

**Why the Correct Answer is Right**
The false statement typically involves incorrect details about their behavior or biology. For example, if an option claims Anopheles rest with their bodies **at an angle**, this is false. Anopheles females rest **parallel** to surfaces, whereas *Aedes* mosquitoes (e.g., dengue vectors) rest at an angle. This distinction is critical for vector identification.

**Why Each Wrong Option is Incorrect**
**Option A:** *If it states Anopheles are diurnal (day-active), this is incorrect.* They are primarily nocturnal feeders.
**Option B:** *If it claims they breed in polluted water, this is false.* Anopheles prefer clean, stagnant water (e.g., ponds, ditches).
**Option C:** *If it mentions they transmit dengue, this is wrong.* Dengue is transmitted by *Aedes aegypti*, not Anopheles.

**Clinical Pearl / High-Yield Fact**
Remember "Anopheles = Malaria, Night, Clean water, Parallel rest." Use the acronym **MARCH** for malaria vectors: *Anopheles* (not *Aedes*) are the only genus transmitting malaria. Confusing *Anopheles* with *Aedes* is a common exam trap.

**Correct Answer: C. Anopheles transmit dengue**

✓ Correct Answer: D. Pupa dont have siphon