Which of the choices below is the main producers in the aquatic environment? a. phytoplankton b. zooplankton c. kelp d. fish

Answers

Answer 1

Answer: I think the correct answer from the choices listed above is option A. The main producers in the aquatic environment is the phytoplankton. They are the base of several aquatic food webs. They provide food for many marine animals. Hope this answers the question.

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Score: You may find _____ in your backyard, flying around or spinning a web. You may also find some of them on your dinner plate.
Porifera: sponges
Cnidaria: stingers
Mollusca: mollusks
Arthropoda: arthropods
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Answers

Arthropoda: arthropods. The other choices are marine organisms.

Describe what a limiting factor is and describe how each factor impacts the rate of photosynthesis.

Answers

A limiting factor is anything that constrains a population's size and slows or stops it from growing. these factors are mostly biotic . For example, Food or mates. Even competing for resources. Factors for the rate of photosynthesis range. The rate of oxygen output, carbon dioxide uptake, carbohydrate (glucose/sugar) production, temperature is also a limiting factor because At low temperatures, the rate of photosynthesis is limited by the number of molecular collisions between enzymes and substrates. At high temperatures, enzymes are denatured. As well as light intensity because without the sun it’s not even possible

Which of the following are the parts of neurons?A: Brain, spinal cord, and vertebral column

B: Dendrite, axon, and cell body

C: Sensory and Motor

D: Cortex, medulla, and sheath

Answers

B: Neurons have dendrites, axons, and a cell body

The organisms that form the base of most open-ocean food webs area. fish.
b. coral.
c. plankton.
d. kelp.

Answers

The correct answer is option C, Plankton

Reason -

In open ocean food web, the organism that lies at the bottom is planktons. Photo plankton consists of chlorophyll and is able to produce food of its own. The zoo planktons then feed on the photo planktons. Corals also survive by eating planktons. Small fishes survive by eating zooplanktons. Larges fishes then feed on smaller fishes. Thus, plankton is at the base of a complex aquatic food web.

Which type of white blood cells produces antibodies?A. B-cellsB. T-cellsC. microphagesD. macrophages

Answers

Answer:

The correct answer is B-cells

Explanation:

There are two types of lymphocytes B- lymphocytes and T- lymphocytes. B lymphocytes or B cells when interacts with the antigen with its B cell receptor it differentiates into two cell memory B cells and plasma B cells.

Plasma B cell is responsible for secreting various antibodies and these antibodies bind to the epitope region of antigen and helps in opsonization and killing of antigen. Memory B cell helps in generating quick immune response when that antigen comes again in the body. Therefore the correct answer is B cells.

B cells produce antibodies

Which example describes a behavioral adaptation?A. A bird builds its nest in the ash near a volcano.
B. A whale has the ability to hold its breath for 20 minutes.
C. A fox's hair is white in the winter and brown in the summer.
D. A monkey has long arms that allow it to swing from one branch to another.

Answers

Answer:

a, bird builds its nest in the ash near a volcano

Explanation:

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Which of the following statements about homologous chromosomes is correct?a. Each gene is at the same locus on both chromosomes. b. They are two identical copies of a parent chromosome which are attached to one another at the centromere. c. They always produce identical phenotypes. d. They are chromosomes that have identical genes and alleles.