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Why does the flagellum and the light sensitive spot ork together?
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What does the eyespot enable the protozoa to do?
A red eyespot is clearly visible. In fact the real light sensitive organ is the swelling near the base of the flagellum. The red area makes sure only light from one direction is detected. Since the light sensitive organ is directly connected to the flagellum, Euglena is perfectly able to swim towards a light source
What part of the retina where there are no light sensitive cells?
yellow spot or blind spot. it has no rod or cone photorecepter cells.
What does the red eye spot in a cell do?
The red eye spot in a cell allows the cell to sense light so that it can move towards or away from it. The cell can swim by using the flagellum (long string like things on the end of a cell).Hope this helps :)
Which is a charateristic of a euglena?
Euglena are unicellular organisms, commonly identified by having two flagella and a photoreceptor called and eyespot. Most have chloroplasts, but not all. Euglena's plasma membrane is surrounded by a flexible layer known as the pelicle which can flex to allow for movement.
What is an eyespot and what is it function?
An eyespot, often called a stigma (derived from Greek for "spot"), is a heavily-pigmented organelle located near the cell membrane that seems to function in light reception in certain single-celled organisms. (It may also refer to a region of light-sensitive cells in the epidermis of certain invertebrates like worms and starfish that performs the same function.) An example of single-celled organisms that have an eyespot are euglenids. These organisms have bright red eyespots, which structurally are pigment-filled shields near the flagellum. Because they are next to the locomotive organelle, stimulation of the eyespot with light also stimulates the flagellum, enabling the euglenid to move in response to light so as to find better light conditions for photosynthesis. Chlamydomonas are another green algae that have an eyespot, this one composed primarily of carotenoids and calcium ions. Considering that photosynthesis and eyespot functions are based on many of the same chemical principles, it's not surprising to find these two things together in many single-celled organisms. Whether eyespots are related to the development of higher-level eyes is currently an open question. A number of evolutionary scenarios suppose that once one gets light-sensitive cells, the further development of complex eyes is a fairly smooth transition.
What does euglena use?
A light sensitive area near the base of its flagellum called an eye spot this directs it towards light as a directional response to stimuli. Therefore it can use its chloroplast to photosynthesise.
What does the eyespot enable the protozoa to do?
A red eyespot is clearly visible. In fact the real light sensitive organ is the swelling near the base of the flagellum. The red area makes sure only light from one direction is detected. Since the light sensitive organ is directly connected to the flagellum, Euglena is perfectly able to swim towards a light source
What part of the retina where there are no light sensitive cells?
yellow spot or blind spot. it has no rod or cone photorecepter cells.
What does the red eye spot in a cell do?
The red eye spot in a cell allows the cell to sense light so that it can move towards or away from it. The cell can swim by using the flagellum (long string like things on the end of a cell).Hope this helps :)
Which is a charateristic of a euglena?
Euglena are unicellular organisms, commonly identified by having two flagella and a photoreceptor called and eyespot. Most have chloroplasts, but not all. Euglena's plasma membrane is surrounded by a flexible layer known as the pelicle which can flex to allow for movement.
What is a Mans most sensitive spot?
his nose is the most sensative spot
Is there such a spot call the g-spot?
There is such a g-spot. it is in the vagina and it is like a little sack that is very sensitive.
What is the area on the retina where the optic nerve attaches and has no rods or cones to detect light or color?
It's called the blind spot - it can't detect light because there are no light sensitive receptor cells located here.
How do unicellular organisms use sensitivity in reference to the mrs gren acronym?
Euglena are unicellular organisms which are sensitive to light. They respond to light via their pigmented eye spot located on the top of the organism.
What ia a yellow spot on the eye?
The yellow spot or the bright spot is a point on the retina which is most sensitive to light radiations. It is probably called so because yellow is the colour to which human eye is most sensitive.
What is light spot dance?
light spot dance is a type of dance danced by light
Cancave mirrors are used in car head lights Why?
The light rays come together to make a bright spot of light. When a concave mirror is used in car headlights, a bulb is placed at the spot where light would come together. This has the effect of making the opposite happen. The rays of light shining out from the bulb are reflected off the concave mirror to make a strong beam of light, which travels out in front of the car to shine on the road.
