Lice - Answer Key

Sep 30, 2026

Uploaded by Jake

Lice are tiny insects that live on humans and can cause significant discomfort despite rarely leading to serious health problems. Their size is described in everyday terms, along with basic anatomy and how they cling to hair or clothing. The content explains what lice eat, how they obtain it, and whether they spread diseases. It also covers the lice life cycle from eggs to nymphs to adults and describes how they move between people through direct contact, not flight. Finally, it distinguishes head, body, and pubic lice and compares lice with fleas and other insects.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages7

Reading Time18 min

AccessFree to download

Lice overview

Size and physical traits

Diet and disease risk

Life cycle: eggs to adults

How lice spread between people

Types of lice and key differences

Lice are tiny insects that can sometimes be found living on humans. They are about the size of a sesame seed and can be light brown or grey in color. These small creatures have six legs, each with a claw at the end, which helps them cling to hair or clothing. While they may be small, they can cause a lot of discomfort and annoyance, so it's important to learn about them. These little insects have a special diet that might surprise you. Lice feed on human blood, which they get by biting into the scalp or skin. While their bites can be itchy and irritating, they don't spread any diseases. In fact, lice rarely cause any serious health problems. It's fascinating to learn about the life cycle of lice. Lice start as eggs, also known as nits, which are laid by adult females on hair shafts close to the scalp. After about a week, the eggs hatch into nymphs, which are immature lice that will grow into adults in around 10 days. Adult lice can live for about a month on a human host, laying more eggs and continuing the cycle. When it comes to their relationships with humans and other insects, lice have some unique characteristics. Unlike other insects like mosquitoes, lice can't fly or jump, which means they can only move from one person to another through direct contact. This is why lice are often spread at schools, where children are in close contact with each other. Lice are specific to humans and cannot be spread to or from pets. There are some interesting differences between lice and other similar insects. For example, there are three types of lice that infest humans: head lice, body lice, and pubic lice, each living indifferent areas and with slightly different appearances. Additionally, lice are different from fleas, which are insects that live on animals and can jump long distances. Understanding these differences can help you recognize and deal with a lice infestation more effectively. In this article, you learned about lice, their diet, life cycle, relationship with humans and other insects, differences between them and other species, and some interesting facts. We hope this information helps you understand these tiny creatures a bit better, and how to handle them if you ever encounter them. | Solve each problem.
Use the article to answer the question.
1) What size are lice?
A. The size of a pinhead B. The size of a sesame seed
C. The size of a grain of rice D. The size of a pea
2) What is the key difference between lice and fleas?
A. Fleas can jump long distances B. Fleas feed on plants
C. Lice live on animals D. Lice can fly
3) Do lice spread diseases?
A. No B. Sometimes C. Yes D. Only if infected
4) How many types of lice infest humans?
A. One B. Three C. Two D. Four
5) Can lice be spread to or from pets?
A. Yes B. Only from pets to humans
C. No D. Only from humans to pets
6) What do lice feed on?
A. Hair B. Human blood C. Sweat D. Skin cells
7) What are lice eggs called?
A. Pupae B. Larvae C. Nits D. Embryos
8) How long does it take for lice eggs to hatch?
A. 3 days B. About a week C. 2 weeks D. 1 month
9) What is the lifespan of adult lice on a human host?
A. About a month B. About two weeks
C. About a week D. About three months
10) How do lice move from one person to another?
A. By flying B. By jumping
C. Through direct contact D. Through the air | | | | | Answers
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10. | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1-10 | 90 | 80 | 70 | 60 | 50 | 40 | 30 | 20 | 10 | 0 | Reading [www.CommonCoreSheets.com](www.CommonCoreSheets.com) Page 3 of 3 Lice are tiny insects that can sometimes be found living on humans. They are about the size of a sesame seed and can be light brown or grey in color. These small creatures have six legs, each with a claw at the end, which helps them cling to hair or clothing. While they may be

FAQs

How large are lice?

Lice are about the size of a sesame seed.

Do lice spread diseases?

No. Their bites can be itchy and irritating, but lice do not spread diseases and rarely cause serious health problems.

How do lice move from one person to another?

Lice cannot fly or jump, so they move through direct contact between people.

Sep 30, 2026

Uploaded by Jake