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photoshop1234 [79]
3 years ago
6

20 pts! And brainliest if i have enought pts AND u answer in 6 min

Biology
2 answers:
Goshia [24]3 years ago
5 0

Answer:

A: no longer used by species

Explanation:

Right answer on edge 2020

Kamila [148]3 years ago
4 0

Answer: The word X represents the organs which is  no longer used by the species.

Explanation:

The word vestigial shows the characters that is not used by the species anymore. Example is appendix which is considered as a vestigial organ in human beings as it is no longer useful for the human body.

This organ was used when there was only vegetarian food available for the human beings to eat.

But now that animals and vegetable both are available there is no need for the enzyme required the digestion of cellulose.

So, this organ is vestigial for the human body.

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1. state the characteristics of Chrysophytes.
GuDViN [60]

1. Chrysophytes

⇒ Unicellar

⇒ Present in water bodies with low calcium levels.

⇒ Golden yellow colour due to accessory pigment.

⇒ Cell walls made of cellulose and silica.

⇒ Free swimming.

⇒ Two unequal flagella.

2. Dinoflagellates

⇒ Dinoflagellates are essentially golden-brown, biflagellate, unicellular motile protists.

⇒ Golden brown is the primary color, but due to changes in the ratios of other pigments, it may also take on yellow, green, brown, or even blue forms.

⇒ Theca or lorica, composed of articulated and sculpted cellulose plates, is a stiff covering that typically covers cells.

⇒ One flagellum is transverse and the other is longitudinal, making the two flagella distinct (heterokont).

⇒ Mesokaryon is the name given to the big nucleus.

⇒ Chlorophyll a and chlorophyll c are found in plastids or chromatophores.

⇒ In the sea, certain dinoflagellates like Gymnodinium and Gonyaulax proliferate in vast numbers, turning the water red and resulting in the so-called "red tide."

⇒ Dinoflagellates in the ocean exhibit bioluminescence. such as Noctiluca.

3. Euglenoids

⇒ Unicellular protists called euglenoids, like the genus Euglena, are frequently found in freshwater.

⇒ The pellicle, a protein-rich cell membrane, exists in place of the cell wall.

⇒ They bear two flagella on the anterior end of the body.

⇒ A small light sensitive eye spot is present.

⇒ They can prepare their own food because they have photosynthetic pigments like chlorophyll. They act like heterotrophs when there is no light, though, by catching other tiny aquatic creatures.

⇒ They are referred regarded as the connecting link between plants and animals since they exhibit both plant and animal-like characteristics, making it difficult to categorize them.

4. Slime moulds

⇒ Chlorophyll does not exist in them.

⇒ Only the plasma membrane encloses them. The spores, however, contain cellulose cell walls.

⇒ They often reside near decomposing vegetation.

⇒ They have a diverse spectrum of coloring.

⇒ They are saprotrophic or phagotrophic feeders.

3 0
1 year ago
Skin surfaces that lack hair contain specialized epithelial cells called which are sensitive to touch
nataly862011 [7]
The answer is Merkel cells (Merkel-Ranvier cells<span> or tactile epithelial cells)</span><span>.  They are mostly found in the tips of the fingers, </span>soles, oral, stratum basale of the palms, and genital mucosa, and nail bed,<span> where touch is most sensitive. They are associated with nerve endings</span>




7 0
3 years ago
Where are neutrons located?
nekit [7.7K]
Nucleus, electrons are found in shells or orbitals that surround the nucleus of an atom, protons and neutrons are found in the nucleus. They group together in the center of an atom.
7 0
3 years ago
Suggest appropriate sources of food to meet their requirements for a Newborn baby and child aged 6.
pashok25 [27]

Explanation:

Calcium . Helps build strong bones and teeth.

Fat. Creates energy, helps the brain develop, keeps skin and hair healthy, and protects against infections.

Folate. Helps cells divide.

Iron. Builds blood cells, and helps the brain develop. Breast-fed babies should receive iron supplements.

Protein and carbohydrates. They provide energy and fuel growth.

Zinc. Helps the cells grow and repair themselves

Your baby also needs vitamins such as:

Vitamin A. Keeps skin, hair, vision, and the immune system healthy.

Vitamin B1 (thiamine). Helps the body turn food into energy.

Vitamin B2 (riboflavin). Helps the body turn food into energy, and protects cells from damage.

Vitamin B3 (niacin). Helps the body turn food into energy and use fats and protein.

Vitamin B6. Keeps the brain and immune system healthy.

Vitamin B12. Keeps nerve and blood cells healthy, and makes DNA -- the genetic material in every cell.

Vitamin C. Protects against infections, builds bones and muscles, and helps wounds heal.

Vitamin D. Helps the body absorb calcium from food, and keeps bones and teeth healthy. Breast-fed babies may need a D supplement.

Vitamin E. Protects cells from damage, and strengthens the immune system.

Vitamin K. Helps the blood to clot.

hope this was helpful

8 0
3 years ago
Read 2 more answers
What is a primary species?
vazorg [7]

Answer:

The primary species something regenerates off of.

For example: Let's say there was an animal called a goblegg.

If the animal who gives it the main components is an chicken, the primary species is a chicken.

Hope this helps!

4 0
3 years ago
Read 2 more answers
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