What is the significance of an eyespot in the cell of euglena?
a) it senses the presence of predators in the surrounding water.
b) it senses light and orients the organism toward or away from the light.
c) it senses food particles present in the surrounding water.

The correct answer will be option- B

Explanation:

Eyespot is the photo-receptive organ organelle which is found in the motile green algae and the unicellular organisms. The eyespot is also known as the "stigma" which helps the algae and Euglena to respond to light conditions.

The light-mediated perception by eyespot allows the movement of Euglena in response to the light either away or towards the light. The presence of light allows the Euglena to find a location to perform the photosynthetic reaction.

Thus, Option-B is the correct answer.

Well there is many different types of birds, water birds,
Land birds, desert birds, etc,. The water level will change the water
And land birds populaton, when water rises, less land birds,
When water goes down, more
Land birds.
Earths surface changes alot.