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 is a plant adaptation to living in a cold climate?
NemiM [27]

Answer:

b. Vernalization

Explanation:

Vernalization is a phenomenon in which plants require low temperature for the flowering. There is either qualitatively or quantitatively dependent on exposure to very low temperature. This process is known as vernalization. Vernalization defines especially to the promotion of flowering by a period of  low climate. For example; Vernalisation occurs in biennial plants. Biennials are monocarpic plants which normally flower and may die in the second season. Some common examples of biennials are carrots, Sugarbeet, cabbages, etc.

6 0
3 years ago
4. Which of the following conclusions about science is best supported by the text?
hjlf

Answer:

4.) C

Explenation

im sure i was right i already answer this question

7 0
3 years ago
Many tropical zooplankton have elaborate spines. These have been interpreted as either a defense against predation or a means to
anastassius [24]

Answer:

Means to increase drag and prevent sinking is the correct answer.

Explanation:

Plankton avoid sinking by increasing their surface area and decreasing their density. Spines slow down sinking by adding surface area without increasing density. Defense against predation would be to sing below. Not the opposite.

3 0
3 years ago
The brain send signals that control the speed at which food moves through the digestive system. What systems are involved?
nadezda [96]
C. Muscular digestiv nervous
8 0
3 years ago
Which of the following is not a property of a solid?
antiseptic1488 [7]

Answer:

c)can flow

Explanation:

solids have all the other properties except for can flow

6 0
3 years ago
Read 2 more answers
Other questions:
  • A patient receiving which agent should be instructed to avoid alcohol consumption?
    10·1 answer
  • promoters are sequences of rna that are the start signals for tha transcription of mrna true or false
    7·2 answers
  • What organelle is composed of flattened membranous sacs that are involved in the 'packaging' and 'shipping' of proteins? (write
    7·2 answers
  • If pink snapdragons of the F1 hybrids (RW) are crossed with red snapdragons of the parent plant (RR), what will be the ratio of
    7·2 answers
  • Using a MOLECULAR CLOCK, clock, scientists are able to estimate the amount of time that two species have been evolving independe
    14·1 answer
  • ATP molecules, which are used for energy by cells, are built during all three stages of cellular respiration. Which stage of cel
    8·1 answer
  • Most of the atp supplies for a skeletal muscle undergoing one hour of sustained exercise come from _____.
    14·1 answer
  • Explain in detail malnutrition
    13·2 answers
  • Which of the methods of transport into or out of the cell require energy? Which do not?
    9·1 answer
  • A phagocytic cell has a mutation in a gene for a hydrolytic enzyme that renders the enzyme nonfunctional. What is the most likel
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!