Observation of scattering of the seeds in Seed Dispersal – Class 7 Science Experiment

Chapter Name: Seed Dispersal

Activity Name: Observation of scattering of the seeds in Seed Dispersal

Activity Description:

In this experiment, we will observe the scattering of seeds from different fruits and pods. We will collect fruits of Kankambaram and sprinkle water on them to observe the seed dispersal.

Additionally, we will collect dry pods of pea, gingelly (Til), and bhendi and open them to examine what happens to the seeds inside. We will also note the distance to which the seeds are scattered. The experiment aims to understand how seeds disperse naturally and under specific weather conditions.

Required Items:

1. Fruits of Kankambaram
2. Water
3. Dry pods of pea, gingelly (Til), and bhendi

Step by Step Procedure:

1. Collect fresh fruits of Kankambaram from your or your friends’ houses.
2. Sprinkle water on the Kankambaram fruits to simulate natural conditions.
3. Observe the seeds’ scattering pattern as the fruits react to the water.
4. Collect dry pods of pea, gingelly (Til), and bhendi from a nearby field or shop.
5. Open the pods carefully and examine what happens to the seeds inside.
6. Note the distance to which the seeds are scattered.

Experiment Observations:

• After sprinkling water on the Kankambaram fruits, observe the seeds’ dispersal pattern. Note if they are scattered in a specific direction or spread widely.
• In the dry pods of pea, gingelly (Til), and bhendi, observe how the seeds are arranged inside and if they show any mechanisms for dispersal (e.g., bursting, being carried by the wind).

Precautions:

1. Handle the collected materials with care to avoid damage.
2. Do not scatter seeds in protected or restricted areas.

Lesson Learnt from Experiment:

Through this experiment, students will learn how various seeds are dispersed naturally. They will understand the mechanisms used by different plants to ensure the spread of their seeds for better survival and growth. The experiment will also provide insights into the impact of weather conditions, such as rainfall, on seed dispersal.