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
Rufina [12.5K]
2 years ago
14

Part II Use the following words and phrases to fill in the blanks with the best possible match. You will use several of the term

s more than once. ecosystem primary succession diversity secondary succession lichens pioneer organisms succession climax community 1. A forest of pine trees is burned over a 10 mile area when lightning strikes a tree. In the spring, a few seedlings are beginning to sprout. ___________________________________ 2. A glacier has scraped all soil from a rocky area. As it slowly retreats, some of the rock is broken down by weathering. Some moss begins to grow. ___________________________________ 3. A small symbiotic organism secretes acid into the rock to anchor itself in place. ___________________________________
Biology
1 answer:
IRISSAK [1]2 years ago
6 0

Answer:

1. A forest of pine trees is burned over a 10 mile area when lightning strikes a tree. In the spring, a few seedlings are beginning to sprout → secondary succession.

2. A glacier has scraped all soil from a rocky area. As it slowly retreats, some of the rock is broken down by weathering. Some moss begins to grow → primary succession.

3. A small symbiotic organism secretes acid into the rock to anchor itself in place → lichens - pioneer organisms.

Explanation:

The succession is the colonization of an open area and includes all the changes the area suffers since then. It is a sequence of events that involves the establishment of different species through time. A sequence of changes that occur in a community temporally and spatially. Local colonizations and extinctions occur while ecosystems evolve at a more complex level.

Ecological succession occurs in stages. The first stages are represented by communities of simple trophic levels and few species. With time, the communities go through different stages.  They transform into more complex ecosystems that are much richer in diversity, showing more interaction among the different species that compose it. The final stage is known as the climax and represents a mature and stable system.

While the community is going through these changes, many species get extinct while many others get to emerge and survive. It occurs overlapping of different taxonomic groups that interact with each other competing or beneficiating other groups.

There are two types of succession, primary and secondary, depending on the magnitude of the alteration.

  • <u>Primary succession </u>refers to an open space with no living organisms, such as a bare rock exposed due to a retreating glacier, a volcanic activity, or an intense fire. If previous species were inhabiting this area, after the event, nothing is left.  

In those cases where there is an alteration or disturbance at a site that opens the area, it allows new species to grow. With time, new species arrive and manage to establish again. The order of the establishment depends on the strategies of each of the species to survive.  

First, pioneer species arrive. These are the first inhabitants, mostly lichens or plants with the capability of surviving in such an environment. Only a few pioneers can establish in the open space. Pioneers modify the habitat, making it more suitable for the establishment of later species, converting rock into fertile soil. As conditions get better, new species arrive like grasses. Grasses and pioneers keep modifying the soil,  making it better with time. New species arrive. Habitat modification keeps on going while new species establish. They produce shadows, alter the temperature, and humidity, fertilizing the soil, competing for resources. Competition becomes more frequent between species. The first species are eventually eliminated by competition, but new species keep appearing and competing for resources. This sequence continues until the commuting reaches a climax, becoming stable and lasting for hundreds of years until another disturbance occurs.

  • <u>Secondary succession</u> refers to an open space left after a perturbation that might have removed all or some of the vegetable forms of life that used to inhabits that area. But the soil remains good and fertile. It has spores and seeds that will emerge when the conditions are appropriate. The disturbance occurred but vegetable species have strategies to survive the event and grow once it´s over. Pine trees are adapted to fire, and some species need fire to germinate.

You might be interested in
Why is circulatory system is important in meeting the needs of all cells throughout an animal's body
AfilCa [17]
It helps the cell by making sure everything gets circulated throughout the cell
5 0
2 years ago
Photosynthesis is an example of...
amid [387]

Answer:

Endothermic reaction

Explanation:

Photosynthesis is an endothermic reaction because sunlight is being absorbed during the reaction and the definition suggests that in a reaction if heat is being absorbed it is termed as an endothermic reaction.

5 0
2 years ago
Describe how the functional units for beta carotene, xanthophyll, chlorophyll a, and chlorophyll b are different. be sure to ide
leonid [27]

The pigments have a similar structure of 40 carbon atoms covalently bonded in a chain. Carotenoids contain oxygen atoms in their chemical structure (retinyl functional group) while xanthophyll does not. This makes carotenoids more non-polar compared to xanthophylls, hence move farthest in chromatography paper using a nonpolar mobile phase. Chlorophyll pigment, on the other hand, has chlorin rings (which are larger) as functional units hence move slowly in chromatography.

Photosynthetic rates can be measured by either the amount of oxygen they consume per particular time period or the amount of carbon dioxide produced per particular time period. This is conducted while immersed in water so as to measure bubble rate formation in case of oxygen production or the change in water pH in the case of carbon dioxide consumption.

When autumn approaches, the amount sunlight received by the plant is reduced due to longer night than days. Deciduous trees have adapted by losing chlorophyll a and b pigments (most important in photosynthesis) during this time. This leaves a higher amount of the other red and yellow pigments hence making the leaves change from green to yellow-red.

It is believed that this is the result of an ancient endosymbiotic relationship between a protist and a eukaryotic cell. The protist generates energy that the eukaryotic can utilize in its growth and reproduction while the protist is sheltered. This relationship became obligatory symbiosis over time.






8 0
2 years ago
Please help!!! best answer gets a brainliest
masha68 [24]

Answer:

biametallic thermometer are used in residential devices like air conditioners,oven,and industrial devices like heaters,hot wires..

5 0
2 years ago
What are seasons? What causes them?
trasher [3.6K]
Seasons are Winter, Spring, Summer And Fall. The Sun moving (orbiting earth) causes them. So in the winter, the sun is on the opposite side of the world, and that's why it is so cold. In the summer, the sun is facing straight at us. Other season's, the sun is kinda in between, if that is any help
3 0
3 years ago
Other questions:
  • Which of the following actions can a person take in order to best conserve fossil fuel resources?
    15·1 answer
  • Which of the following observations helped Darwin shape his concept of descent with modification?
    9·1 answer
  • 11. true / false Today, scientists use genetic similarities between species to help
    15·2 answers
  • A car traveling at 15 m/s starts to decelerate steadily. It comes to a complete stop in 10 seconds. what is its acceleration ?
    12·1 answer
  • You have discovered an enzyme that can catalyze two different chemical reactions. Which of the following is most likely to be co
    10·1 answer
  • Which way do the nitrogenous bases in dna pair up?
    12·2 answers
  • Explain where the carbon stored in fossil fuels comes from. <br><br>Thanks!&lt;3
    7·1 answer
  • For a long time scientists have studied the cells of complex organisms. Scientists have discovered that
    10·1 answer
  • What is the connection between crime and unequal access to basic services ?? <br>​
    9·1 answer
  • Which of these digestive chemicals
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!