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
Natasha2012 [34]
2 years ago
10

Pikaia gracilens is an extinct invertebrate animal described from the wonderful pre-Cambrian soft-bodied fossils of the Burgess

Shale in British Columbia. Examinations by paleontologists have revealed that organisms belonging to this species had a prominent notochord and segmental muscles. From this information, you could conclude that it is closely related to __________.
Biology
1 answer:
Snezhnost [94]2 years ago
5 0

Answer:

Lancelets

Explanation:

ancelet, name for little, fishlike lower chordate (see Chordata), likewise called amphioxus; it demonstrates numerous affinities with the vertebrates. There are around 30 lancelet species, most having a place with the class Brachiostoma (once in the past Amphioxus). Lancelets are more often than not around 1 inch long, with straightforward bodies decreased at the two finishes. There is no unmistakable head and no combined blades. Lancelets are channel feeders and live in shallow marine waters; they can swim through water or wet sand, yet are typically discovered covered in the sand with just the mouth end anticipating. Little nourishment particles enter the pharynx through the mouth and are sifted through as the water exits through the gill cuts. Breath presumably happens for the most part through the skin. The utilization of the gill cuts for sustaining instead of breath is normal for the lower chordates

The lancelet has a dorsal notochord, or solidifying bar, stretching out from tip to tail, that gives it its trademark pointed shape. It holds the notochord as the major skeletal help all through life; in vertebrates the notochord is encompassed and for the most part supplanted by a vertebral section during embryonic advancement. In the lancelet there is a nerve string over the notochord, yet no mind and no eyes. A ventral vein conveys the boring blood; there is no heart. It is imagined that vertebrates developed from precursors like lancelets. The hatchling of the lamprey, the most crude living vertebrate, looks like a lancelet in numerous regards. Lancelets are grouped in the phylum Chordata, subphylum Cephalochordata.

You might be interested in
Hey Guys! ^^ Here's A Question, Why does a dog circle around its bed before lying down?
Amiraneli [1.4K]

Answer:

it needs somewhere comforatible

Explanation:

When they circle around they need to get that space soft and then they will lay down

3 0
3 years ago
A frog with a mass of 0.29kg hops up in the air. At the highest point in the hop, the frog has a gravitational potential energy
PtichkaEL [24]

Answer:

0.27m

Explanation:

To get the energy

Potential energy= Mgh

M is Mass

G is acceleration due to gravity

H is height..

M= 0.29kg, h= ?

P=0.759. g=9.8m/s

Therefore,

0.759=0.29×9.8×h

H= 0.759÷2.842

H= 0.27m

8 0
3 years ago
What kind of living and nonliving things do you think a marine biologist studies ?
prisoha [69]
Marine biologists study changes in the ocean. so they will look at the chemical composition of deep waters and see how consecrated the oxygen is. They will also study the movements of the plates because when planted move it usually makes new food for deep life

they will also check animal concentrations in certain areas.

Another thing they do is track animal movements. this could be by putting a tracker on a whale or a shark or anything and watching its depths it goes or watching the distance it goes in a day.
6 0
2 years ago
Read 2 more answers
Which best describes trees in temperate regions?
zavuch27 [327]
The answer is all of the because
7 0
3 years ago
What do you think may happen to the leading edge of plate a as it continues to move downward?why?
tester [92]
It will be melt in the layer of earth called mantle because mantle has a higher temperature than crust. and as it melt, it will be called magma.
3 0
2 years ago
Other questions:
  • Describe any major landmarks (buildings, bridges, historical sites, etc.) that were destroyed during the earthquake.
    8·1 answer
  • Ultraviolent radiation can cause mutations in the DNA of skin cells that have been overexposed to the sun. This DNA has no effec
    13·1 answer
  • What organelle is attached to the Rough ER
    13·2 answers
  • Answers to carbon, nitrogen, and water cycle webquest
    13·1 answer
  • The building block of living things is called
    13·2 answers
  • Carries messages to and from the brain...<br> A. Blood vessels <br> B. Nerve fibers
    7·1 answer
  • How can a change in DNA alter the physical traits of their offspring?
    9·1 answer
  • The red structure represents a...... ANSWER I WILL MARK BRAINLIEST.
    10·1 answer
  • What is the dependent variable for the following hypothesis: If plants receive
    10·1 answer
  • The secretion of aldosterone is directly stimulated by _______. The secretion of aldosterone is directly stimulated by _______.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!