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
Serggg [28]
3 years ago
8

During which period did the first vascular plants appear? A. Cambrian B. Ordovician C. Silurian D. Devonian

Biology
2 answers:
arsen [322]3 years ago
7 0
Psilopsids were he first vascular plants which were in C. Silurian period!
guapka [62]3 years ago
5 0
<span>C. Silurian
</span>The first jawed fishes and uniramians (like insects, centipedes and millipedes) appeared during the Silurian (over 400 million years<span> ago). First vascular plants (plants with water-conducting tissue as compared with non-vascular plants like mosses) appear on land (Cooksonia is the first known).</span>
You might be interested in
Which of the following correctly describes contrasting features of a plant cell and an animal cell?
Evgen [1.6K]

C.Plant cells have a large central vacuole that takes up most of the cell's space, and animal cells have many smaller vacuoles.


Hope it helps : )

7 0
3 years ago
Read 2 more answers
Charles washes his hands every time he passes either the bathroom or the kitchen sink. Before he goes to bed at night, he checks
FromTheMoon [43]

In reality this is way too little information to go on, and it would be irresponsible to make any assumptions about an individual based on what was provided here alone, but for the sake of merely answering a High School Bio question:

the answer is  A.  OCD.

3 0
3 years ago
Read 2 more answers
Antibody molecules and receptor molecules are similar in that they have both?
Vadim26 [7]
ANSWER : have a specific shape related to their specific function
6 0
2 years ago
In an experiment, a scientist makes a radioactively labeled probe using viral DNA. She then discovers that the probe hybridizes
JulsSmile [24]

<span>Out of the following given choices;</span>

A. The Geiger counter being used to detect radiation is broken.

B. Two or more samples we accidentally swapped, causing confusion.

C. A virus contaminated the reaction in which the probe was made.

D. The human genome might contain at least one viral gene.

 

The answer is D. This means that the viral DNA inserted itself in the human tissue DNA aand became a prophage. A prophage is a latent form of viral infection where the inserted viral DNA has no interference with the host cell biochemical processes. The prophage will be present in the daughter cells of the host cells.

7 0
3 years ago
Read 2 more answers
Please help ASAP!!!!
Svetllana [295]

Answer:

ight bet

Explanation:

3 0
2 years ago
Other questions:
  • All the following are true of the movement of Earth's atmosphere except :
    15·1 answer
  • Multicellular organisms have five levels of organization ranging from simplest to most complex. The simplest level is the cellul
    14·2 answers
  • Arrange the rock layers from oldest to youngest. Re-examine the rock outcrops if you need too. Record the order in the student g
    7·2 answers
  • Match the following respiratory conditions to the
    6·1 answer
  • A brown bird was crossed with a white one and all of the offspring were tan. Complete a Punnett Square analysis for this pair to
    7·1 answer
  • Which of these sentences is true about the virus?
    12·1 answer
  • Which of these types of weathering requires the presence of water?
    7·1 answer
  • To control the population of insects, if insecticides are used then how it will affect the population of birds?
    7·1 answer
  • What is an example of a structure that is found in both prokaryotes and eukaryotes?.
    6·1 answer
  • Round seeds are dominant over wrinkled seeds in
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!