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
sergij07 [2.7K]
2 years ago
11

Which group of chordates has a notochord and includes separate males and females?

Biology
1 answer:
Harlamova29_29 [7]2 years ago
7 0
Lancelets is the group of chordates that has a notochord and includes separate males and females.

Lancelet exhibits the four basic characteristics of phylum Chordata. It has a dorsal nerve, a notochord, a post annul tail, and pharyngiall gill slit.

Jawless fish, cartilaginous fish, and bony fish have notochord when they were still young but it was replaced by a vertebral column as they mature. 

<span>Lancelets are included in the subphylum cephalochordata. Cephalochordates are gonochoristics. It means that the sexes are separate. Both sperm and eggs cells are released in the water where fertilization occurs.</span>
You might be interested in
You are walking in a clear-cut section of forest a few days after a heavy rainstorm A nearby stream is very muddy and has
Neko [114]

Answer:

in my oppinion its call a  

source of pergisol

Explanation:

What if climate change is self-sustaining? This is already the case, for example, with melting arctic sea ice. This reflects solar radiation, which allows the ocean, located under the ice, to stay cold. But when sea ice melts, the ocean absorbs heat from the sun, which melts more ice. In general, it is difficult to predict the tipping point where such a feedback loop will engage.

Spread over more than 23,000,000 km2, at the top of the globe, permafrost (permanently frozen ground) could enter such a vicious circle. Normally, up to 4 m of soil and plant debris cover the permafrost. This top layer (called the active layer) normally melts every summer, and freezes in winter. It thus protects the permafrost from the rise in heat outside. But in the spring of 2018, a team working at a research station in Tchersky, Russia, discovered that near-surface land had not frozen over at all during the long, dark polar night.

3 0
3 years ago
When calcium ions are released into muscle fibers, what happens along the actin filament? Multiple Choice The position of the tr
zimovet [89]

Answer:

The correct answer will be options

1. The position of the tropomyosin threads shift

2. Exposing myosin binding sites

3. Allowing the myosin head to attach to the actin filament

Explanation:

Calcium plays an important role in the contraction of muscles especially in the formation of the cross-bridge between myosin and actin filaments.

In the presence of calcium, myosin head binds the actin filament as calcium binds to the troponin which changes the configuration of the troponin which releases the tropomyosin from the myosin-binding site on actin.

Once the myosin binding site is freed, myosin binds the site and causes muscle contraction due to ATP hydrolysis.

Thus, the selected options are the correct answer.

5 0
3 years ago
What kind of bond causes water molecules to be attracted to one another?
Sladkaya [172]

Answer is:

c) Hydrogen Bonds

4 0
3 years ago
Read 2 more answers
During DNA replication, an extra cytosine base is added to the DNA. What type of mutation is this?
alexira [117]
Answer - D. Frameshift Mutation

Reasoning - This is a genetic mutation which is caused by nucleotides/indels that is not divisible by three.

Ty for waiting :) I was trying to back up my Answer. Thank you for being part of this community and allowing me to answer - Johny
Hit the Like, Heart. Your an awesome person!! :)
3 0
3 years ago
Read 2 more answers
What is unusual about the cell walls of acid-fast-positive bacteria that makes them difficult to stain without heat
allochka39001 [22]
Acid-Fast Bacteria possess a unique cell wall architecture different from both gram negative and gram positive bacteria. The thick outer mycolic acid layer renders acid-fast bacteria resistant to gram stain.
6 0
3 years ago
Other questions:
  • Does mitosis more closely resemble meiosis I or meiosis II?
    5·1 answer
  • please help me If a heterozygous dominant tall pea plant is crossed with a short pea plant, what is the expected phenotypic rati
    15·1 answer
  • What type of fossil would provide the best information about how an organism behaved?
    11·2 answers
  • PLEASE HELP URGENT<br> Why is the freezing and boiling point of life important to life
    5·1 answer
  • Given the DNA strand GAATTCCTCGAG, what would be the complimentary strand to make the double stranded DNA? How do you get the an
    5·1 answer
  • Which of the following would be the LEAST likely to be associated with the development of motion sickness? driving rapidly over
    6·1 answer
  • Which of the gazelle’s naturally selected traits is shown in this picture to be an evolutionary advantage
    13·1 answer
  • 18. Which of the following is not an advantage of using biological control?
    12·2 answers
  • Grouping of objects help the shopkeeper, justify the statement.
    10·1 answer
  • ____________________________ was one of the first true dinosaurs to appear in the late triassic, is was an agile, bipedal carniv
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!