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
Vilka [71]
3 years ago
7

Animals with photoreceptors have good vision. a. True b. False

Biology
1 answer:
jarptica [38.1K]3 years ago
5 0
<span><span>Photoreceptors are cells</span><span><span> <span>in the retina</span></span><span> that begin the process of seeing. The retina is the back part of the eye that contains the cells that respond to light. These specialized cells are called photoreceptors. They absorb and convert light into electrical signals. These signals are sent to other cells in the retina and ultimately through the optic nerve</span></span><span> <span>to the brain</span></span><span> where they are processed into the images we see. The answer is true. Animals with photoreceptors have good vision.</span></span>
You might be interested in
Please respond!!!
kodGreya [7K]

Answer:

this may help

"The presence of hair, composed of the protein keratin, is one of the most obvious characteristics of mammals. Although it is not very extensive or obvious on some species (such as whales), hair has many important functions for most mammals. Mammals are endothermic, and hair traps a boundary layer of air close to the body, retaining heat generated by metabolic activity. Along with insulation, hair can serve as a sensory mechanism via specialized hairs called vibrissae, better known as whiskers. Vibrissae attach to nerves that transmit information about tactile vibration produced by sound sensation, which is particularly useful to nocturnal or burrowing mammals. Hair can also provide protective coloration or be part of social signaling, such as when an animal’s hair stands “on end” to warn enemies, or possibly to make the mammal “look bigger” to predators.

Unlike the skin of birds, the integument (skin) of mammals, includes a number of different types of secretory glands. Sebaceous glands produce a lipid mixture called sebum that is secreted onto the hair and skin, providing water resistance and lubrication for hair. Sebaceous glands are located over most of the body. Eccrine glands produce sweat, or perspiration, which is mainly composed of water, but also contains metabolic waste products, and sometimes compounds with antibiotic activity. In most mammals, eccrine glands are limited to certain areas of the body, and some mammals do not possess them at all. However, in primates, especially humans, sweat glands are located over most of the body surface and figure prominently in regulating the body temperature through evaporative cooling. Apocrine glands, or scent glands, secrete substances that are used for chemical communication, such as in skunks. Mammary glands produce milk that is used to feed newborns. In both monotremes and eutherians, both males and females possess mammary glands, while in marsupials, mammary glands have been found only in some opossums. Mammary glands likely are modified sebaceous or eccrine glands, but their evolutionary origin is not entirely clear.

The skeletal system of mammals possesses many unique features. The lower jaw of mammals consists of only one bone, the dentary, and the jaw hinge connects the dentary to the squamosal (flat) part of the temporal bone in the skull. The jaws of other vertebrates are composed of several bones, including the quadrate bone at the back of the skull and the articular bone at the back of the jaw, with the jaw connected between the quadrate and articular bones. In the ear of other vertebrates, vibrations are transmitted to the inner ear by a single bone, the stapes. In mammals, the quadrate and articular bones have moved into the middle ear ((Figure)). The malleus is derived from the articular bone, whereas the incus originated from the quadrate bone. This arrangement of jaw and ear bones aids in distinguishing fossil mammals from fossils of other synapsids.

Mammals, like birds, possess a four-chambered heart; however, the hearts of birds and mammals are an example of convergent evolution, since mammals clearly arose independently from different groups of tetrapod ancestors. Mammals also have a specialized group of cardiac cells (fibers) located in the walls of their right atrium called the sinoatrial node, or pacemaker, which determines the rate at which the heart beats. Mammalian erythrocytes (red blood cells) do not have nuclei, whereas the erythrocytes of other vertebrates are nucleated. "

Explanation:

7 0
3 years ago
Please help, I've asked this question a bunch and no one answers it
STatiana [176]

Answer:

Explanation:

it really depends on the animal but its blinking

4 0
2 years ago
Read 2 more answers
Help mememmememememmemememem
Ghella [55]

Answer:

B

Explanation:

since the impulse is moving form Q to P ...Q will be the receptor and P is the relay neuron which will transfer the impulse to the next neuron

6 0
3 years ago
Which statement describes decomposers? Decomposers are those organisms that recycle matter in the ecosystem. Decomposers are ins
Ivan
Decomposers are those organisms that recycle matter in the ecosystem.
6 0
3 years ago
I need the ansewer to this but i scammed these points any way
Igoryamba
Where do we hypothesize that plants came from?

6 0
3 years ago
Other questions:
  • 1. Which type of macromolecule stores energy and provides thermal insulation for the body? *
    7·2 answers
  • What would happen if the aerobic respiration process broke down in a tropical rain forest?
    6·1 answer
  • Over time, color variation in a population of butterflies declined. The number of color variations within the population was twe
    6·2 answers
  • A yellow fever mosquito has 3 chromosomes in its eggs. how many chromosomes does it have in its wing cells
    14·1 answer
  • Find three elements whose symbols are like states
    10·1 answer
  • True statement about a container of a gas
    8·1 answer
  • Need help like now please iikkkbbb
    15·1 answer
  • ***I WILL GIVE BRAINLIST*** What determines the order in which new nitrogen bases line up?
    5·1 answer
  • DONT POST LINKS
    8·1 answer
  • Which statement is the best observation?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!