Problem Analysis:
The worksheet contains two tasks related to
tropisms in plants. Let's break them down step by step:
####
Task 1: Select positive or negative tropism in the following picture.
The image shows a plant growing out of a pot, with its roots extending downward and its stem growing upward. This is a classic example of
gravitropism, where plant growth is influenced by gravity.
-
Positive gravitropism: Roots grow downward (toward gravity).
-
Negative gravitropism: Stems grow upward (away from gravity).
From the image:
- The roots are growing downward, which is
positive gravitropism.
- The stem is growing upward, which is
negative gravitropism.
####
Task 2: Match the picture with the correct type of Tropism.
Three types of tropisms are given:
1.
Thigmotropism: Growth response to touch or contact.
2.
Phototropism: Growth response to light.
3.
Gravitropism: Growth response to gravity.
We need to match each image with the correct tropism:
1.
First Image (Flower with light):
- The flower is bending toward the light source.
- This is an example of
phototropism.
2.
Second Image (Plant roots growing downward):
- The roots are growing downward into the soil.
- This is an example of
gravitropism.
3.
Third Image (Plant vine wrapping around a pole):
- The vine is wrapping around a pole due to contact.
- This is an example of
thigmotropism.
Solution:
####
Task 1:
- The plant in the image demonstrates both
positive gravitropism (roots growing downward) and
negative gravitropism (stem growing upward).
####
Task 2:
-
First Image: Phototropism
-
Second Image: Gravitropism
-
Third Image: Thigmotropism
Final Answer:
1.
Positive gravitropism (roots growing downward) and
negative gravitropism (stem growing upward).
2.
- First Image: Phototropism
- Second Image: Gravitropism
- Third Image: Thigmotropism
Boxed Final Answer:
\[
\boxed{
\text{1. Positive gravitropism (roots), Negative gravitropism (stem)} \\
\text{2. First Image: Phototropism, Second Image: Gravitropism, Third Image: Thigmotropism}
}
\]
Parent Tip: Review the logic above to help your child master the concept of plant tropisms worksheet.
