Problem Overview:
The task involves using a
dichotomous key to classify organisms based on their characteristics. A dichotomous key is a tool that helps identify organisms by providing a series of choices between two options at each step. By following the key, you can narrow down the identification of an organism.
Steps to Solve:
1.
Understand the Dichotomous Key: The key provides a series of binary (two-choice) questions about the characteristics of the organism. Each choice leads to another question or directly identifies the organism.
2.
Analyze Each Image: For each image, determine the characteristics of the organism and follow the key step-by-step until you reach the correct identification.
3.
Record the Answers: Write the name of the identified organism in the corresponding box below each image.
Solution:
####
Step 1: Analyze the First Row of Images
1.
Image 1 (Spider):
- Has 8 legs → Go to Question 5.
- Very hairy body → Tarantula.
-
Answer: Tarantula
2.
Image 2 (Butterfly):
- Has 6 legs → Go to Question 3.
- Has wings → Go to Question 4.
- Colored wings → Butterfly.
-
Answer: Butterfly
3.
Image 3 (Ant):
- Has 6 legs → Go to Question 3.
- No wings → Go to Question 7.
- No jumping hind legs → Ants.
-
Answer: Ants
4.
Image 4 (Housefly):
- Has 6 legs → Go to Question 3.
- Has wings → Go to Question 4.
- Transparent wings → Go to Question 9.
- One set of transparent wings → Housefly.
-
Answer: Housefly
5.
Image 5 (Spider):
- Has 8 legs → Go to Question 5.
- Light hair covering the body → Go to Question 6.
- Often brown body and makes funnel webs → Hobo Spider.
-
Answer: Hobo Spider
6.
Image 6 (Snake):
- Vertebrate (has backbone) → Rattlesnake.
-
Answer: Rattlesnake
####
Step 2: Analyze the Second Row of Images
7.
Image 7 (Fly):
- Has 6 legs → Go to Question 3.
- Has wings → Go to Question 4.
- Transparent wings → Go to Question 9.
- Two sets of transparent wings → Go to Question 10.
- Few hairs, longer body → Wasp.
-
Answer: Wasp
8.
Image 8 (Moth):
- Has 6 legs → Go to Question 3.
- Has wings → Go to Question 4.
- Antennae are feathery with no club at the end → Moth.
-
Answer: Moth
9.
Image 9 (Butterfly):
- Has 6 legs → Go to Question 3.
- Has wings → Go to Question 4.
- Antennae are club-shaped with a bulb at the end → Butterfly.
-
Answer: Butterfly
10.
Image 10 (Grasshopper):
- Has 6 legs → Go to Question 3.
- No wings → Go to Question 7.
- Jumping hind legs → Grasshopper.
-
Answer: Grasshopper
11.
Image 11 (Black Widow Spider):
- Has 8 legs → Go to Question 5.
- Light hair covering the body → Go to Question 6.
- Black with large red symbols on body → Black Widow Spider.
-
Answer: Black Widow Spider
Final Answer:
```
Tarantula, Butterfly, Ants, Housefly, Hobo Spider, Rattlesnake
Wasp, Moth, Butterfly, Grasshopper, Black Widow Spider
```
Boxed Answer:
\[
\boxed{\text{Tarantula, Butterfly, Ants, Housefly, Hobo Spider, Rattlesnake, Wasp, Moth, Butterfly, Grasshopper, Black Widow Spider}}
\]
Parent Tip: Review the logic above to help your child master the concept of dichotomous keys worksheet.
