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Yuki888 [10]
3 years ago
6

Do jellyfish have eyes

Biology
2 answers:
abruzzese [7]3 years ago
7 0
Yes they have 4 special eyes
sukhopar [10]3 years ago
3 0

Answer:

it depends on the type of jellyfish.

Explanation:

most jellyfish depend on their nervous system (or as scientists call it, their nervous net) to spot light signal.

box jellyfish are the only type (as far as i know) to be known for having eyes that are visible. I think they have 4 eyes

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Help quick pls. please give scientific reasoning for your answer ​
Juli2301 [7.4K]

Answer:

Expertise in 1 area

Explanation:

If you had a general knowledge of literally everything, that is great for mastering school. But, you are not going to school your whole life. You need college, work, and so on. When in college, it isn't like school, you can only choose 1 subject. Thus, it is good to expertise in 1 area.

I hope this helps you :)

6 0
3 years ago
Skin from male mouse grafted on back of female. within 2 wks graft becomes necrotic and must be removed. what cells responsible
Ivahew [28]

The correct answer is CD8+ T lymphocytes.

This process is known as graft rejection and it is defined as the immunological destruction of transplanted organs or tissues. The graft rejection may be based on both cell-mediated and antibody-mediated immunity against cells of the graft. When rejection occurs via cellular immunity, it is mediated by killer T cells (cytotoxic or CD8+ cells) which induce the apoptosis of target cells.

3 0
3 years ago
The classification system for organisms has changed from seven levels to eight. This happened because
Rama09 [41]
Because scientist found another criteria for classifying organisms such as their DNA composition

Evidences that Taxonomy uses to group or categorizes species range from <span><span>
1.       </span>"Fossil Records</span> <span><span>
2.       </span>Comparative anatomy</span> <span><span>
3.       </span>Comparative embryology</span> 
4.       Biochemical information <span><span>
5.       </span>Cellular structure</span> <span><span>
6.       </span>Behavior</span>" 
<span>We also suggest that taxonomy has played various roles mainly in many aspects in Zoology, Botany, Anatomy and Physiology –aspects that include animal and human structures and functions. As the biotic community is so diverse it is classified to Biodiversity and the existence of properly assorting by set standard. </span>
5 0
4 years ago
Read 2 more answers
Axon diameter and degree of myelination determine nerve impulse conduction velocity.
motikmotik

The answer is true.

The myelin sheath covers many axons in central nervous system (CNS) ( by oligodendrocytes) and in the peripheral nervous system (PNS) (by Schwann cells). Their function is to insulate axons and to increase the speed at which information travels from one nerve cell to another.

Nerve conduction velocity is specific to each individual and depend largely onboth  an axon's diameter and the level to which that axon is myelinated.

7 0
3 years ago
In Illinois, the two most common crops grown are corn and soybeans. Corn is a that depletes the soil of nitrogen. Soybeans are a
lina2011 [118]

<u>Answer:</u>

<em>Farmers definitely use the information above to plan out their crops from one year to next.</em>

<u>Explanation:</u>

Nitrogen is an essential nutrient required for healthy plant growth. Corn is an important food crop and after its cultivation the soil is depleted of its nitrogen. <em>Cultivation of any crop on soils that lack nitrogen will not yield good result.</em>  

Thus the nitrogen in the soil has to be replenished. Soybean is a crop that has symbiotic bacteria living on its roots. <em>This bacteria help in fixing atmospheric nitrogen.</em> Thus the nitrogen level will get replenished.  

Thus cultivating soybean on the land in the period between <em>harvest and sowing of corn would be a healthy practice that increases yield and maintains soil health.  </em>

7 0
4 years ago
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