What is the respond to stimuli of algae?

It may contain special receptors called chemoreceptors that respond to chemical stimuli and allow the algal cell to recognize a multitude of signals, ranging from signals carrying information about changes in the alga’s environment to signals carrying information about mating partners.

How does Spirogyra feed or acquire energy?

Spirogyra Longata performs photosynthesis to receive its nutrients. This alga contains special cells called stomata that open and close so the organism can take in carbon dioxide and release oxygen during the chemical reaction in photosynthesis.

What are some responses to stimuli?

Examples of stimuli and their responses:

• You are hungry so you eat some food.
• A rabbit gets scared so it runs away.
• You are cold so you put on a jacket.
• A dog is hot so lies in the shade.
• It starts raining so you take out an umbrella.

What is an example of response to stimuli in biology?

For example, phototropism is the plant’s response to stimulus, i.e. sunlight. A plant hormone “auxin” keeps the plant’s direction towards the sun by activating the growth in a particular part of a stem. Similarly, gravitropism in plants responds to the stimulus, i.e. gravity.

How do plants respond to the stimuli of gravity?

Plants’ growth response to gravity is known as gravitropism; the growth response to light is phototropism. As a result, root cells on the upper side of the root grow longer, turning the roots downward into soil and away from the light. Roots also will change direction when they encounter a dense object, such as a rock.

Do you need energy to respond to stimuli?

Cells are the basic units of structure and function of living organisms. Energy is the ability to change or move matter. All life processes require energy, so all living things need energy. All living things can sense and respond to stimuli in their environment.

How does spirogyra reproduce by fragmentation?

Spirogyra reproduces asexually by fragmentation. In this process, the spirogyra breaks into two or more fragments and each fragment gives rise to a complete organism.

What is fragmentation in spirogyra?

The process of asexual reproduction in Spirogyra is known as fragmentation, where the body of spirogyra when matures will get break into many smaller pieces or fragments due to strong water current. These different pieces will later grow into new individuals.

How do cells respond to different stimuli?

Receptors are specialised cells that detect a stimulus. Their job is to convert the stimulus into electrical signals in nerve cells. Some receptors can detect several different stimuli but they are usually specialised to detect one type of stimulus: taste and smell – chemical receptors in the tongue and nose.

How do you respond to environmental stimuli?

Receptors are groups of specialised cells. They detect a change in the environment stimulus. In the nervous system this leads to an electrical impulse being made in response to the stimulus. Sense organs contain groups of receptors that respond to specific stimuli.

How does Spirogyra adapt to its environment?

It needn’t be any deliberate change that we humans introduce to its environment. Spirogyra responds to light; it does photosynthesis when exposed to light. It grows and adapts according to the ambient conditions. All this could be thought of as responses to certain stimuli that it find around it.

How do you get algae to respond to stimuli?

Algae aren’t very responsive to any stimulus besides light. The only way I ever got algae I worked with to respond to any sort of stimulus was to hit them with an intense burst of light, which caused them to visibly move and for their chloroplasts to change position within the cell.

How do plants and animals respond to stimuli?

Although this happens in different ways the pattern of events is always the same: Plants can also respond to stimuli but the response is usually slower than that of animals. Receptors are specialised cells that detect a stimulus. Their job is to convert the stimulus into electrical signals in nerve cells.

How do bacteria respond to stimuli from outside the cell?

Through this reorganization, the bacterium’s receptor array amplifies the signal that a specific molecule has been sensed outside the cell. This structural shift then activates kinases, or enzymes, within the cell, starting a chain reaction that leads to a response, such as changing how the flagella (or tails) spin.