1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
klemol [59]
3 years ago
6

A receptor is a structure that detects stimuli. The stigma (eyespot) of Euglenoids detects ____, assisting with phototaxis. A. l

ight intensity and direction B. vibrations C. chemicals D. sound frequency and direction E. temperature change
Biology
1 answer:
Rudik [331]3 years ago
3 0

Answer:

The correct answer is option A, that is, light intensity and direction.

Explanation:

A photoreceptive organelle witnessed in the motile or flagellated cells of unicellular photosynthetic species like euglenoids and green algae is known as the stigma or the eyespot apparatus. It permits the cells of the organism to detect the intensity and direction of the light and react towards it.  

This assists the organisms to either swim away from the light known as negative phototaxis, or to swim towards it known as positive phototaxis. The eyespots are the basic and the most typical eyes witnessed in nature. The eyespots comprise bright areas or orange and red granules of pigment and photoreceptors.  

You might be interested in
Peter was surprised to learn that, in addition to blood, there's another type of circulating body fluid that flows within separa
Kobotan [32]
The answer is tissue fluid. Tissue fluid holds far smaller quantity of protein molecules because they are too large to escape easily over the tiny holes in the capillary endothelium. Tissue fluid doesn't contain red blood cells because they are too large, but does comprise some white blood cells.
7 0
3 years ago
The embryos of a fish, chicken and rabbit all contain a tail and pharyngeal pouches at some point during their early development
liq [111]

Answer:

The answer is vertebrate.

Explanation:

Vertebrates are those animals that have a central spinal cord. Fish, Chicken and rabbit can be classified as vertebrates because they all have a spinal cord. The vertebrate is a big term that is further divided into different classes for example Fish, amphibians, mammals, avian, and reptiles,  

5 0
3 years ago
Read 2 more answers
Which of the following is a true statement about lava that contains large amounts of dissolved gases? Lava that produces violent
anygoal [31]

<u>Answer:</u>

<em>The dissolved gases produce violent eruption as they escape. </em>

<u>Explanation:</u>

Magma contains dissolved gases and these dissolved gases induce vapor <em>pressure on the magma.</em> The magma is able to remain in the dissolved state itself without erupting because this vapor pressure is less than the confining pressure of the <em>rock surrounding the magma. </em>

One the vapor pressure exceeds this confining pressure the dissolved gases begin to  expand and<em> forms small gas bubbles</em>.

The <em>density of these gas bubbles</em> called vesicles is less than the density of magma and thus naturally tries to push out. When the gas bubbles escape the magma is also pushed out. Thus greater <em>amount of dissolved gases result in violent eruptions. </em>

"

8 0
3 years ago
Question- Which statement accurately describes the location and charge of electrons in an atom?
ra1l [238]

Answer:

you already answered it I'm confused lol

5 0
3 years ago
A patient request to either use or not use life-sustaining treatments and artificial nutritional support is known as
kotegsom [21]
This is known as a DNR form
4 0
3 years ago
Other questions:
  • Please help...
    9·1 answer
  • This is a plastid with chlorophyll in plants that photosynthesize.
    13·2 answers
  • The enzyme and substrate will fit together like a ____ and ____.
    9·1 answer
  • A client, with a creatinine level of 25 (1906.25 µmol/l), has been diagnosed with chronic obstructive pulmonary disease. being p
    12·1 answer
  • How could an error during transcrition affect the protein that is produced
    10·1 answer
  • Digesting food is an example of
    14·1 answer
  • Outcomes of Complement Activation There are three major outcomes of complement activation: opsonization, inflammation stimulatio
    12·1 answer
  • In which structure would you expect to find a cell wall?
    9·1 answer
  • Do we follow the natural order? We as humans, do follow Mother Nature rules?
    8·1 answer
  • How could you increase the magnitude of excitatory postsynaptic potentials (EPSPs) generated at a synapse? A. Increase sodium-po
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!