Tag Archive | "photosynthesis"

Explain The Niche Of Two Organisms In Your Ecosystem?


1) Ulva:X spores settle on rocky shores,& with low temperature,they grow into germlings.This is possible due to steady lower amplitude on suceeding days,with the result they are able to perform photosynthesis & grow.Even with daytime exposure,intensity of Sunlight being low enough,no question of bleaching.By the next spring tine – after a lapse of 12 more days,they have increased their surface area & now can withstand lower levels of wave action.As more of the algae crop up,the action of waves is lessened.
2) Mitra the small black colored mollusc,dewll on middle part of supra littoral zone,where they scrape algae like Enteromorpha.During low tide they move up the walls of rock crevices,so that they can escape from direct sunlight.When the tide comes in,they start feeding.

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Science Help Please 10 Points To Right Answer?


The organisms of one species living together in the same place at the same time are a ____.
(1 point)
community
population
niche
all of the above
2.
Which process uses oxygen in plants, algae, and animals?
(1 point)
transpiration
photosynthesis
chemosynthesis
respiration
3.
During photosynthesis, light energy becomes ____ energy.
(1 point)
soil life
chemical
mechanical
pyramid
4.
Which of the following eats consumers?
(1 point)
carnivore
herbivore
bacteria
fungi
5.
Nitrogen in the soil is used by ____.
(1 point)
plants
animals
both a and b
neither a nor b
6.
As you move upward, from level to level, in an energy pyramid, energy ____.
(1 point)
decreases
increases
stays at the same level
is destroyed
7.
Of the following, which is NOT a freshwater ecosystem?
(1 point)
lake
pond
estuary
swamp
Completion
8.
The portion of Earth that supports life is called the ____________________.
(1 point)
9.
The burrow a chipmunk digs under a patio stone is an example of a(n) ____________________.
(1 point)
10.
Organisms that can use the energy from an outside source such as the Sun to create energy-rich molecules are called ____________________.
(1 point)
11.
A symbiotic relationship in which both organisms benefit is called ____________________.
(1 point)
12.
Average weather conditions over time are called ____________________.
(1 point)
Short Answer
13.
Compare and contrast a community and an ecosystem.
(3 points)
14.
Why must a producer be at the base of every food chain?
(3 points)
15.
Describe the relationship between CO2 and oxygen in the process of photosynthesis. How does this benefit both plants and animals?
(3 points)
16.
Compare a climax community to a pioneer species.
(3 points)
17.
List at least three ways in which grassland and tundra biomes are similar. (3 points)

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Help Me With Science: Ecology (by Doing Researching) Pt. 1?


What is the organisms of one species living together in the same place at the same time are a?
__niche
__population
__ community
__all of the above
Which of the process uses oxygen in plants, algae, and animals?
__respiration
__transpiration
__photosynthesis
__chemosynthesis
During photosynthesis, light energy becomes, what energy?
__pyramid
__soil life
__chemical
__mechanical
Which of the choices eats consumers?
__bacteria
__carnivore
__fungi
__herbivore
Nitrogen that is in the soil is used by?
__plants
__animals
__both a and b
__neither a nor b
As you move upward, from level to level, in an energy pyramid, the energy?
__decreases
__increases
__stays at the same level
__is destroyed
Which of the following is NOT a freshwater ecosystem?
__lake
__pond
__estuary
__swamp
Thank you!! No mean comments, hater, etc!! It will be the best if you explained and list down answers!!

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Science. Science. Science.?


1. The organisms of one species living together in the same place at the same time are a ____.
community
population
niche
all of the above
2. Which process uses oxygen in plants, algae, and animals? (1 point)
transpiration
photosynthesis
chemosynthesis
respiration
3. During photosynthesis, light energy becomes ____ energy. (1 point)
soil life
chemical
mechanical
pyramid
4. Which of the following eats consumers?
herbivore
bacteria
fungi
5. Nitrogen in the soil is used by ____.
plants
animals
both a and b
neither a nor b
6. As you move upward, from level to level, in an energy pyramid, energy ____. (1 point)
decreases
increases
stays at the same level
is destroyed
7. Of the following, which is NOT a freshwater ecosystem? (1 point)
lake
pond
estuary
swamp
Completion
8. The portion of Earth that supports life is called the ____________________.
9. The burrow a chipmunk digs under a patio stone is an example of a(n) ____________________.
(1 point)
10. Organisms that can use the energy from an outside source such as the Sun to create energy-rich molecules are called ____________________.
11. A symbiotic relationship in which both organisms benefit is called ____________________.
12. Average weather conditions over time are called ____________________.
(1 point)
Short Answer
13. Compare and contrast a community and an ecosystem.
14. Why must a producer be at the base of every food chain?
15. Describe the relationship between CO2 and oxygen in the process of photosynthesis. How does this benefit both plants and animals?
16. Compare a climax community to a pioneer species.
17. List at least three ways in which grassland and tundra biomes are similar.

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Over Time, What Would We Expect In The Evolution Of C3, C4 And Cam Strategies?


Over time, what would we expect in the evolution of C3, C4 and CAM strategies?
a)As the most complicated plants, CAM plants are most likely to go extinct.
b)As the probable ancestral form of photosynthesis, C3 plants are primitive and most likely to go extinct.
c)Because CAM plants make better usage of metabolism during the night, they are superior and will eventually become the dominant plants.
d)Because CO2 is delivered by the bundle sheath cells in C4 plants, they are superior and will eventually dominate.
e)Each form of photosynthesis has advantages in a heterogeneous world and as long as environmental conditions vary, all forms will have an adaptive advantage in their unique niche.

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Biology Help Please!!!?


1. Which of the following infectious organisms is the smallest?
A) Prion
B) Viroid
C) Virus
D) Bacteria
2. All of the following are reasons why “superbugs”have become a serious health issue EXCEPT:
A) antibiotic overuse.
B) antiobiotic shortages.
C) antibiotic underuse.
D) antibiotic misuse.
3. What kind of cell does a phage infect?
A) Mammalian cell
B) Plant cell
C) Eukaryotic cell
D) Bacterial cell
4. All of the following are ways that bacteria benefit ecosystems EXCEPT:
A) Recycle hydrogen through the ecosystem
B) Recycle carbon through the ecosystem
C) Produce oxygen through photosynthesis
D) Produce carbon dioxide through photosynthesis
5. In a lysogenic infection, once the DNA of the virus is incorporated into the bacterial DNA, the DNA is
called a
A) prion.
B) viroid.
C) prophage.
D) plasmid.
6. The normal bacteria present on our skin are beneficial because
A) they fill the niche so harmful bacteria cannot grow there.
B) they can not cause diseases in our bodies.
C) they open the niche for harmful bacteria to grow.
D) they cause minor diseases that are easily treated.
7. A bacteria that is capable of living in an environment with or without oxygen is called a(n)
A) obligate anaerobe.
B) obligate aerobe.
C) facultative anaerobe.
D) facultative aerobe.
8. In the bacterium in Figure 18.2, what is the structure labeled B?
A) Pili
B) DNA
C) Plasmid
D) Flagellum
9. In the bacterium in Figure 18.2, what is the structure labeled C?
A) Pili
B) Cell wall
C) Plasmid
D) Flagellum
10. Bioremediation uses microbes to
A) produce carbohydrates.
B) clean up pollutants.
C) convert atmospheric nitrogen.
D) break down food.
11. When used properly, antibiotics can fight
A) viral infections.
B) fungal infections.
C) HIV infections.
D) bacterial infections.
12. Prokaryotes provide ________ to humans and other organisms
A) habitats.
B) antibiotics.
C) nutrients
D) endocytosis
13. An infectious particle made of a strand of nucleic acid surrounded by protein is a
A) bacteria.
B) virus.
C) viroid.
D) prion.
14. Viruses that infect bacteria are called
A) bacteriophages.
B) helical viruses.
C) polyhedral viruses.
D) prophages.
15. Which of the following type of infectious agent can cause an infected host to cell burst in a lytic infection?
A) Bacteria
B) Fungus
C) Prion
D) Virus
16. When HIV causes a lysogenic infection, it can remain dormant for years. When it becomes a lytic
infection, it
A) causes no symptoms.
B) destroys white blood cells.
C) mutates infrequently.
D) can no longer cause AIDS.
17. An endospore may survive a drought because it is protected by a
A) hollow bridge.
B) thick wall.
C) plasmid replication.
D) plasma membrane.
18. How do humans benefit from bacteria living in the digestive system?
A) Bacteria adapt to fluctuations in temperature.
B) Bacteria get food and a place to live.
C) Bacteria produce vitamins humans need.
D) Humans make nitrogen the bacteria can use.
19. Chemicals that kill bacteria or slow their growth are called
A) toxins.
B) antibiotics.
C) endospores.
D) plasmids.
20. Misuse of antibiotics can lead to multidrug resistance in
A) humans.
B) bacteria.
C) viruses.
D) antibiotics.
21. Bacteria can cause disease to a host by all of the following EXCEPT:
A) Invading tissues and attacking cells.
B) Making poisons that are transported through blood.
C) Producing antibodies to make a vaccine ineffective.
D) Making toxins that are carried by blood.
22. A person is given antibiotics to combat pneumonia. After two days, the person feels better and decides not to continue taking the medicine. This could help the bacteria evolve because it
A) allows bacteria that were somewhat resistant to live.
B) introduces new bacteria into the system.
C) increases the number of antibiotics prescribed.
D) decreases the amount of bacteria that survive.
23. Using antibiotics when bacteria are not causing an illness may make some bacteria
A) avoid the organism beng treated.
B) become extinct due to overexposure.
C) resisant to the antibiotics used.
D) produce fewer toxins that usual.
24. Which of the following is NOT a factor in bacteria becoming antibiotic resistant?
A) misuse
B) animal use
C) overuse
D) underuse
25. Prokaryotes benefit plants by
A) providing antibiotic resistance to roots
B) converting nitrogen into a useable form
C) producing carbon dioxide for photosynthesis
D) producing endospores for survival

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