Which set includes Arthropods of economic importance providing useful products to man?

1)Anopheles, culex, tse-tse fly
2) Apis, bombyx, laccifer
3) Limulus, Peripatus
4) Locusta, Grasshopper

Options

A. Anopheles, culex, tse-tse fly
B. Apis, bombyx, laccifer
C. Limulus, Peripatus
D. Locusta, Grasshopper

Explanation

To determine which set includes Arthropods of economic importance providing useful products to man, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Analyze Option 1: Anopheles, Culex, Tse-tse Fly**
- Anopheles and Culex are types of mosquitoes, while the Tse-tse fly is known for transmitting diseases such as malaria and sleeping sickness.
- These organisms are vectors for diseases and do not provide useful products to humans.
- **Conclusion:** This option is not economically important.

2. **Analyze Option 2: Apis, Bombyx, Laccifer**
- Apis refers to honeybees, which produce honey and beeswax.
- Bombyx is the silkworm, which is used to produce silk.
- Laccifer is known as the lac insect, which produces lac, a resin used in various products.
- All three organisms provide valuable products to humans.
- **Conclusion:** This option is economically important.

3. **Analyze Option 3: Limulus, Peripatus**
- Limulus, also known as the horseshoe crab, does not have significant economic importance today.
- Peripatus, or velvet worms, are not widely recognized for economic contributions.
- Since Limulus does not contribute economically, this option cannot be the answer.
- **Conclusion:** This option is not economically important.

4. **Analyze Option 4: Locusta, Grasshopper**
- Locusta refers to locusts, and grasshoppers are known to be agricultural pests.
- Both are considered pests and do not provide useful products to humans.
- **Conclusion:** This option is not economically important.

### Final Answer:
After analyzing all options, the set that includes Arthropods of economic importance providing useful products to man is **Option 2: Apis, Bombyx, Laccifer**.

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