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
Nat2105 [25]
3 years ago
12

Under what environmental condition would we expect euglena to ingest food rather than produce food via photosynthesis?

Biology
1 answer:
masya89 [10]3 years ago
4 0

When acting as a heterotroph (animal), the Euglena surrounds a particle of food and consumes it by phagocytosis. When acting as an autotroph, the Euglena uses chloroplasts to produce sugars by photosynthesis.

The number and shape of chloroplasts within Euglena varies greatly. Euglena are able to move through aquatic environments by using a large flagellum for locomotion. To detect light, the cell has an eyespot, a primitive organelle that filters sunlight into light-detecting, photo-sensitive structures at the base of the flagellum; allowing only certain wavelengths of light to hit it.

This photo-sensitive area detects the light that is able to be transmitted through the eyespot. When such light is detected, the Euglena may shift its position to get better photosynthesis.

The motility of Euglena also allows hunting. Most Euglena are considered mixotrophs: autotrophs in sunlight and heterotrophs in the dark. Euglena do not have plant cell walls, but have a pellicle instead. The pellicle is made of protein bands that spiral down the length of the Euglena and lie beneath the plasma membrane.[2]

Euglena can survive in fresh and salt water. In low moisture conditions, Euglena forms a protective wall around itself and lies dormant as a spore until environmental conditions improve. Euglena can also survive in the dark by storing paramylon granules inside the chloroplast.

You might be interested in
Complete the table by placing an x in the columns to deacribe each gas. more than one term can be used to describe each gas
olchik [2.2K]

Answer

N

O

C & O

Ar

H & O

Explanation

6 0
3 years ago
A species of cactus has spines. How would biologists explain how a species of cactus with spines evolved from an ancestral cactu
sergejj [24]

Answer:

It needs the spines for protection

Explanation:

The cactus would develop the spines as a form of protection to protect itself from being consumed and to survive longer.

8 0
3 years ago
What is the basic unit of a nucleic acid and what is it made of?
riadik2000 [5.3K]
The basic repeating unit of nucleic acids are known as nucleotides. A nucleotide consists of three distinct chemical groups, a 5-carbon sugar (ribose or deoxyribose), a nitrogen-rich base - (cytosine (C), guanine (G), adenine (A), thymine (T) in DNA or uracil (U) instead of T (in RNA), and phosphate.
4 0
2 years ago
Read 2 more answers
What is an example of a relationship between organisms in which an organism produces energy that is used by another organism to
agasfer [191]

Answer:

Tree frogs use plants as protection. Golden jackals, once they have been expelled from a pack, will trail a tiger to feed on the remains of its kills. Goby fish live on other sea animals, changing color to blend in with the host, thus gaining protection from predators.

Explanation:

4 0
3 years ago
Does Sexual Reproduction requires Fertilization?
Dmitriy789 [7]

Answer:

yes

Explanation:

otherwise the egg will die and the period will start

6 0
3 years ago
Read 2 more answers
Other questions:
  • Nstead of clear-cutting land and moving on, a local lumber business decides to start farming trees: cutting some of the trees an
    13·1 answer
  • A toxic accident occurs in your neighborhood. several adults, teenagers, and small children are present. which group, if any, wo
    13·1 answer
  • The transfer of energy from one organism to the next in an ecosystem begins with a producer. A producer is an organism that prod
    10·2 answers
  • What percentage of our DNA is the same as a mouse?
    7·1 answer
  • Which of these is a distinguishing abiotic feature of the Great Barrier Reef
    15·2 answers
  • 1. Flowering plants and bees have influenced each other's evolution, providing an example of
    8·2 answers
  • A forensic anthropologist is analyzing the skeletal remains of a human. She discovers a wide pelvic region, long narrow nasal ap
    7·1 answer
  • 1.Tawag sa gobernador ng egypt?​
    6·1 answer
  • What is coal composed of?
    9·1 answer
  • In addition to atp, what are the products of glycolysis?.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!