Worksheet on characteristics of living things with definitions, examples, and images.

Let's solve this "Characteristics of Living Things Worksheet" step by step.

---

A. Match the definitions to the correct characteristic using the word bank:

Word Bank:
Excretion, Growth, Nutrition, Movement, Irritability, Respiration, Reproduction

1. The permanent increase in size of an organism.
→ Growth
*(Explanation: Growth refers to the irreversible increase in size and mass of an organism over time.)*

2. The process where organisms get and make use of their food.
→ Nutrition
*(Explanation: Nutrition involves obtaining food and using it for energy, growth, and repair.)*

3. The way organisms respond to stimuli.
→ Irritability
*(Explanation: Irritability is the ability to react to changes in the environment, like light, heat, or touch.)*

4. The ability to remove waste from the body.
→ Excretion
*(Explanation: Excretion is the removal of metabolic wastes like urine and carbon dioxide.)*

5. The change in position of an organism.
→ Movement
*(Explanation: Movement is any change in position of the body or parts of the body.)*

6. The ability to produce offspring.
→ Reproduction
*(Explanation: Reproduction ensures the continuation of a species.)*

7. When food is burned, using oxygen to produce energy.
→ Respiration
*(Explanation: Respiration is the process where food is broken down with oxygen to release energy.)*

---

B. Match each example to the correct characteristic:

1. Eating a slice of bread.
→ Nutrition
*(You are consuming food for energy and nutrients.)*

2. Touching a hot pot and quickly moving your hand.
→ Irritability
*(This is a reflex response to a stimulus — heat.)*

3. Getting rid of urine.
→ Excretion
*(Urine is a waste product removed from the body.)*

4. A dog having puppies.
→ Reproduction
*(Producing offspring is reproduction.)*

5. Smelling food and walking towards it.
→ Irritability (and Movement)
→ But since we need one main characteristic, the best answer is Irritability *(response to smell)*, but Movement also applies. However, the *primary* characteristic here is Irritability, as it's the response to a stimulus.

> ✔ Best answer: Irritability

6. Using energy from the food we eat.
→ Respiration
*(Energy is released during respiration from food.)*

7. Breathing out carbon dioxide
→ Excretion
*(Carbon dioxide is a waste product of respiration, so excreting it is part of excretion.)*

8. Getting taller as you get older.
→ Growth
*(Permanent increase in size.)*

9. Picking mangoes off of the tree and eating them.
→ Movement and Nutrition
→ The picking is movement; eating is nutrition. But the key action is Nutrition, since eating is the core process.

> ✔ Best answer: Nutrition

10. A plant carrying out photosynthesis.
→ Nutrition
*(Photosynthesis is how plants make their own food — a form of nutrition.)*

---

C. Write the correct characteristic that best describes the picture:

1. Picture: Tigers with cubs (a mother tiger and her young)
→ Reproduction
*(This shows offspring being raised — evidence of reproduction.)*

2. Picture: A person eating food
→ Nutrition
*(Consuming food is part of nutrition.)*

3. Picture: A family showing different stages of life (baby, child, adult, elderly)
→ Growth
*(Shows progression through life stages — growth over time.)*

---

✔ Final Answers:

---

Section A:

1. Growth
2. Nutrition
3. Irritability
4. Excretion
5. Movement
6. Reproduction
7. Respiration

---

Section B:

1. Nutrition
2. Irritability
3. Excretion
4. Reproduction
5. Irritability
6. Respiration
7. Excretion
8. Growth
9. Nutrition
10. Nutrition

---

Section C:

1. Reproduction
2. Nutrition
3. Growth

---

✔ All words are spelled correctly, and each answer matches the biological characteristic accurately.

Let me know if you'd like this formatted as a printable answer key!