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katrin2010 [14]
4 years ago
5

A radula is a specialized feeding organ used to scrape material off of a substrate for ingestion, much like a cheese grater scra

pes shreds off of a block of cheese. Snails, which have this structure, are thus which kind of feeder?
Biology
1 answer:
Sergio039 [100]4 years ago
7 0

Answer:

D. mass feeder

Explanation:

A) suspension feeder

B) fluid feeder

C) deposit feeder

D) mass feeder

<em>Suspension feeder requires capturing of food that are suspended in water through the use of specialized organs.</em>

<em>Fluid feeding involves feeding on liquid (such as blood) emanating from other organisms.</em>

<em>Deposit feeding involves feeding on sediments</em>

<em>Mass feeding involves ingestion of scraps of different food materials.</em>

Hence, the correct option is D.

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Answer:

Am I supposed to tell you if it's right or wrong? or what...??

Explanation:

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3 years ago
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Match the key terms and concepts of the immune system with their descriptions. ResetHelp Dendritic cellsDendritic cells Innate i
liubo4ka [24]

The question is incomplete as it does not have the options to which the provided options must be matched and the options are:

a. Includes cilia, mucous membranes, dendritic cells

b. Immunological response brought about by antibody production

c. Immunological response that kills infected host cells

d. Use(s) BCRs to recognize epitope. First step in clonal selection

e. Phagocytes that engulf anything foreign. Eventually display epitope to helper T cells using MHC I or II

f. Lymphocytes that activate B cells and CTLs

g. Differentiated B cells that are stored in lymph nodes to provide protection against future infections by the same pathogen

h. Produce and secrete antibodies

i. Kills infected host cells

Answer:

a. Innate Immunity

b. Humoral Immunity

c. Cellular Immunity

d. Immature B cells

e. Dendritic cells

f. Th cells

g. Memory cells

h. Plasma cells

i. Cytotoxic T cells

Explanation:

a. Innate Immunity

- the immunity which is present from birth and provides immunity due to the presence of physical barriers like the production of mucus and the cilia.

b. Humoral Immunity

- the immunity which is provided by the immune cells present in the blood in which the main immune cells are the lymphocytes that produce antibodies

c. Cellular Immunity

- the immune response which provides immunity by killing the infected cell observed in the case of the virus-infected cell which is killed.

d. Immature B cells

- The immature B cell is the cell that matures into the plasma cell and the effector cell and is involved in the clonal selection

e. Dendritic cells

- the antigen-presenting cell which moves in the blood and tissues and when interact with an antigen kills the antigen and displays its part through MHC I and II.  

f. Th cells-

T helper cells are the T- lymphocytes that interact with the antigen and activates the B-lymphocyte activation and T cell activation pathway.

g. Memory cells

- the cells which are produced by when a pathogen interacts with the B lymphocytes and the B cells from the memory B cell for future recognition of the antigen

h. Plasma cells

- The cells on antigen interaction start producing the antibodies.

i. Cytotoxic T cells-

the T lymphocytes which are involved in cellular immunity.

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4 years ago
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Readme [11.4K]

Answer:

chlorophyll

Explanation:

The molecules of chlorophyll contained in the chloroplasts absorb energy in the form of light from the sun. Some plants need more sunlight than others, but all need at least a little. Instead of taking in oxygen and breathing out carbon dioxide like animals do, plants take in carbon dioxide from the atmosphere.

6 0
4 years ago
You perform an experiment using an aquatic plant to determine which color of light is most effective at driving photosynthesis.
ElenaW [278]

Answer:

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Please find explanation below.

Explanation:

According to this question, an experiment is being carried out to determine which color of light is most effective at driving photosynthesis. Three sets of aquatic plants (plants A, B and C) are used for this experiment. Plant A was placed under blue light, plant B under red light, and plant C under green light.

Photosynthesis is the process whereby plants manufacture their food (glucose) using sunlight energy. However, it is worthy to note that OXYGEN GAS is one of by-products of this metabolic process. Hence, as stated in this question, the bubbles noticed to be coming off the leaves is OXYGEN gas.

However, more products in a reaction denotes the fast rate of such reaction. Plants A and B produced more bubbles than plant C. This means that photosynthesis in plants A and B, which released more OXYGEN GAS as BUBBLES, is more effective under the blue and red light respectively.

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This is true. The atmosphere gets tighter as you go up.

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3 years ago
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