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
zubka84 [21]
3 years ago
6

2. Traditionally, protists were classified in kingdom Protista. How has the classification of protists changed? 3. Relate Cause

and Effect What is a major reason why scientists need to reclassify protists? 4. Apply Concepts What three kingdoms arose from protist ancestors? 5. Write to Learn Scientists say that we should not look for the earliest ancestors of animals among modern-day protists. Write a short paragraph that explains why.
Biology
1 answer:
pantera1 [17]3 years ago
7 0

Protists are the eukaryotes which are neither plants, animals nor fungi. But they are plant-like, fungi-like and animal-like organisms.  It is difficult to classify all the protists in one kingdom Protista because of their numerous diversified traits. There are a few parasites, predators and also producers among the protists. Some have a cell wall, while others have a cell membrane. Mode of locomotion can be flagella, cilia or the pseudopodia. The best example is the <em>Euglena</em> exhibiting both plant and animal like characteristics in having a chloroplast performing photosynthesis and exhibiting locomotion by flagella. These diversified traits made the scientists to reclassify the protists. The kingdoms which arose from protist ancestors include the kingdom animalia, plantae and mycota sharing common characteristic features with their ancestor. Scientists say that we should not look for the earliest ancestors of animals among modern-day protists because, the modern day protists have gone through a process of evolution which makes them different from their early ancestors. The gradual changes during the course of evolution has made them different from their ancestors with respect to their structure, adaptations and also the genetic composition.

You might be interested in
How do the mitochondria and vacuole work together?
jenyasd209 [6]
Mitochondria converts food energy into cell energy for the cell use this probides energy for the ribosome
5 0
3 years ago
In an estuary, there is shallow, brackish water. What component of an estuary is this an example of?
Alona [7]
The answer is Habitat. The brackish water environment is formed due to the mixing of fresh water from the river with the salty waters of the ocean. This habitat is significant for fishes that come to spawn and feed. Crabs, mosquitoes and birds can also be found in this environment.
3 0
4 years ago
Read 2 more answers
HIRRY
Nadya [2.5K]

Answer:

the fourth one. biomagnofication is when an organism ingests other plants or animals that have toxins in them. the toxins are widely distributed

4 0
3 years ago
Which greenhouse gas has an average lifetime in the atmosphere of a few weeks to thousands of years and is the largest contribut
lapo4ka [179]

Answer:

Greenhouse gases from human activities are the most significant driver of observed climate change since the mid-20th century.1 The indicators in this chapter characterize emissions of the major greenhouse gases resulting from human activities, the concentrations of these gases in the atmosphere, and how emissions and concentrations have changed over time. When comparing emissions of different gases, these indicators use a concept called “global warming potential” to convert amounts of other gases into carbon dioxide equivalents.

Explanation:

Why does it matter?

As greenhouse gas emissions from human activities increase, they build up in the atmosphere and warm the climate, leading to many other changes around the world—in the atmosphere, on land, and in the oceans. The indicators in other chapters of this report illustrate many of these changes, which have both positive and negative effects on people, society, and the environment—including plants and animals. Because many of the major greenhouse gases stay in the atmosphere for tens to hundreds of years after being released, their warming effects on the climate persist over a long time and can therefore affect both present and future generations.

8 0
3 years ago
During photosynthesis, plants release____ into the air through their leaves.
Pani-rosa [81]

Answer:

O2 (oxygen)

Explanation:

Photosynthesis- the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

3 0
3 years ago
Other questions:
  • A young woman was brought into the emergency room because of repeated seizures. her roommate said that the woman had taken the d
    14·1 answer
  • Mary marries an unaffected man, Justin, whose paternal uncle has galactosemia. Determine th genotypes for Justin’s Family
    12·1 answer
  • What is the final electron acceptor in the light reactions?
    7·1 answer
  • Which of the following is not true about cells? 1)All living thing begins life as a single cell. 2)The cell is the basic unit of
    5·1 answer
  • A teacher gives her students four different liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and mi
    11·2 answers
  • What organ provides the major site for lipoprotein formation from exogenously derived lipids?
    9·1 answer
  • A researcher has hypothesized that the chemical tributyltin (an additive in boat paint) seeps out of the paint into the water an
    14·1 answer
  • Help ! Help ! Help ?
    9·1 answer
  • 20. A specific enzyme is involved in a certain body reaction. What will most
    10·1 answer
  • 1. An airbag in an automobile inflates when a collision occurs, which protects the passenger from serious injury (see the photo
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!