Roundworms and annelids exhibit radial symmetry true or false

Answers

Answer 1

Answer: I believe this is False

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Which of the following is a characteristic of Kingdom Protista?A.) Some protists are heterotrophs, and others are autotrophs.
B.) All protists are heterotrophs.
C.) All protists are unicellular.
D.) All protists are autotrophs.

Answers

The ans is A) some protists are heterotrophs and others are autotrophs..

Answer is A! I took the Test!

Which promotes the idea of sustainable resources among a population?A. Promoting the use of other land for growing more food
B. Encouraging a decrease in overconsumption
C. Building a much stronger economy
D. Using technologies that can harvest resources faster

Answers

Answer: B. Encouraging a decrease in overconsumption.

Explanation:

Sustainability can be define as the judicious use of the resources. This suggests that the use of the resources should be in a way so that they can meet the needs of the present as well as the future human population.

Among the options given, B. Encouraging a decrease in overconsumption. is the correct option. This is because of the fact that if the resources are overconsumed this will lead to the scarcity of the resources. This will not help in maintaining the sustainability of resources in the population.

B, Encouraging a decrease in overconsumption

Sponges have flagellated cells called _____ that line their internal chambers and create water flow to capture food

Answers

choanocytes - spelling might be off on that... it means collared cells from Latin roots.

Answer:

Choanocytes

Explanation:

Choanocytes are membranous flagellate cells lining the spongiocelium (central body cavity of Porifera kingdom animals) and other internal vibrating chambers of sponges.

The movement of its flagellacreates the water stream that brings nutrients and gases. The nutrients are filtered by the choanocyte, which is not a solid structure, but rather a set of small erect rods separated by spaces.

Any organic particle or plant microorganism trapped in the choanocyte is routed down toward the cell body and endocyted, with intracellular digestion occurring in digestive vacuoles.

The images show the stages of human development. At which stage does cell differentiation start?

Answers

Answer:

the second picture is your answer

Answer:

the second picture to your right

Explanation:

How does the ozone layer benefit life on Earth

Answers

Explanation:

it shields humans and other living things from ultraviolet rays

The stratospheric ozone layer absorbs ultraviolet (UV) radiation, preventing dangerous UV rays from hitting Earth's surface and harming living organisms. UV rays cannot be seen or felt, but they are very powerful and change the chemical structure of molecules.

Plasmodium is a protist that causes malaria. A hypothetical drug targeting the outer membrane of plasmodium could cause cell rupture of the protist and help prevent malaria. What specific protist structure would this drug target

Answers

Answer;

-Pellicle

Explanation;

-Protist cells may contain a single nucleus or many nuclei; they range in size from microscopic to thousands of meters in area. Protists may have animal-like cell membranes, plant-like cell walls, or may be covered by a pellicle.

-On a paramecium's exterior is found the pellicle. The pellicle is stiff to maintain the paramecium's shape and provide stability but it is also flexible to allow movement. It also acts as an attachment site for external organelles such as cilia.

Answer:

Pellicle.

Explanation:

Malaria is the most significant parasitic disease of human. The disease is caused by protozoan of the genus Plasmodium. The most serious malignant malaria is caused byPlasmodium falciparum. It is transmitted by the female Anopheles mosquito. Plasmodium is a protist that cause malaria. Different types of species of the plasmodium are: P.vivax, P.malaria, P.ovale and P.falciparum which causes the most serious malignant called malaria.

Protist have animal-cell like membrane and is plasmodium is the example of protist. Its contain single nuclei or many nuclei. On a paracium exterior found a pellicle. Pellicle is a layered structure which surrounds the cells in many types of protozoa and also surrounds the cytoplasm. It is the non-extracellular like the cell wall of plants.

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