All categories

2 years ago

Why might protists like a euglena or algae not have a gullet or oral groove?

2 answers:

7 0

Answer: A gullet is an invagination of protoplasm in protozoans like paramecium. It helps in the intake and digestion of food in these organisms. Unlike bacteria, protists' cells are eukaryotic. These organisms have a membrane-bound nucleus and other membrane-bound structures in their cytoplasm. Zooflagellates are a third type of protists. They are animal-like and move by using flagella. Flagella are whip-like structures that spin quickly, working like a boat's propeller to move the organism through water. Most zooflagellates have from one to eight flagella that help them move. They are a monophyletic group of organisms is not true of protists. What does the gullet do in a paramecium? Gullet in a paramecium acts as buccal cavity where the food is converted into food vacuoles for digestion. The cytostome is similar to a mouth in that it functions as an opening to allow food to enter the cell. Once inside the cytostome, the food will enter a food vacuole that contains enzymes that break down food into smaller components the protists can then use as nutrients. Euglena move by a flagellum (plural flagella), which is a long whip-like structure that acts like a little motor. The flagellum is located on the anterior (front) end, and twirls in such a way as to pull the cell through the water.

Explanation:

My name is Ann [436]2 years ago

3 0

Protozoans like paramecium have protoplasmic invasions called gullets, which aid in these species' food uptake and digesting.

<h3>What are protists?</h3>

Protists have eukaryotic cells, as opposed to bacteria, these organisms feature cytoplasmic membrane-bound components as well as a nucleus that is membrane-bound.

Another kind of protists is zooflagellates, they resemble animals and use flagella to move. Flagella are whip-like organelles that rapidly spin and help an organism move through the water like a boat's propeller.

The majority of zooflagellates have one to eight flagella that aid in movement, protists do not belong to a monophyletic group of creatures.

Therefore, The paramecium's gullet functions as the buccal cavity where food is transformed into food vacuoles for digestion.

Learn more about protists, here:

brainly.com/question/3508403

#SPJ2

You might be interested in

What creates tides <br><br><br> helpp please

stiks02 [169]

Answer:

THE MOON'S GRAVITATIONAL FORCE PULLS THE EARTHS WATER AND CREATES WAVES-TIDES???

Explanation:

5 0

3 years ago

Read 2 more answers

Your grandmother is very impressed with the size of the tomatoes from a plant that she planted in her garden. These tomatoes are

marusya05 [52]

Answer: The blank can be filled correctly by "if the seeds contain the gene or allele responsible for large size of the tomatoes"

Explanation:

In plants also, characters or traits of characters are defined by genes. Different alleles produce different traits of the same character.

For example, in classic Mendelian genetics, T was the allele responsible for tall plant trait while t was the responsible for dwarf trait.

Similarly, there would be a gene(s) responsible for size of the tomatoes. In addition, seeds are the products of sexual reproduction of plants. So, they may carry genetic combination different from parent plants (due to meiosis, crossing over, independent assortment, et cetera).

So, if the seed contains the gene or allele responsible for large size of tomatoes then only they will produce same kind of tomatoes.

4 0

4 years ago

Idk this at all so please help

artcher [175]

Answer:

The Calvin cycle is a process that plants and algae use to turn carbon dioxide from the air into sugar, the food autotrophs need to grow.

Every living thing on Earth depends on the Calvin cycle. Plants depend on the Calvin cycle for energy and food. Other organisms, including herbivores, also depend on it indirectly because they depend on plants for food. Even organisms that eat other organisms, such as carnivores, depend on the Calvin cycle. Without it, they wouldn't have the food, energy, and nutrients they need to survive.

The Calvin cycle has four main steps: carbon fixation, reduction phase, carbohydrate formation, and regeneration phase. <em>Energy to fuel chemical reactions in this sugar-generating process is provided by ATP and NADPH, chemical compounds which contain the energy plants have captured from sunlight.</em>

8 0

4 years ago

Raw materials required in the autotrophic mode of nutrition involve:

Sedbober [7]

Answer:

Water,mineral salts and carbon dioxide

4 0

3 years ago

Scientists discovered a fossil in China that belongs to a previously unknown species of an obscure group of small dinosaurs, rel

fiasKO [112]

Answer:

Physical.

Explanation:

These scientists group the found fossil with birds on the basis of physical structures because first the scientists relate the fossil to the feathers of the bird and later the scientists relate it to the bone structure to determine the resemblance between the birds and the fossil of an obscure group of small dinosaurs so we can conclude that the scientists observe the found fossil on the basis of physiological characteristics of that fossil.

6 0

3 years ago