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3 years ago

What does competition mean and how might you see competition in an ecosystem?

Biology

1 answer:

allochka39001 [22]3 years ago

3 0

Answer:

Ecological competition occurs when living organisms, including animals, plants, bacteria and fungi, need the same limited resources to thrive in their shared environment. An ecosystem could collapse if several species needed the same scarce resources to complete their life cycle. Competition will occur between organisms in an ecosystem when their niches overlap, they both try to use the same resource and the resource is in short supply. Animals compete for food, water and space to live. Plants compete for light, water, minerals and root space.

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1. Name the two major divisions of the nervous system; list the organs/tissues found in each.

Jet001 [13]

Answer:

1.Structural Divisions of the Nervous System. The nervous system can be divided into two major regions: the central and peripheral nervous systems. The central nervous system (CNS) is the brain and spinal cord, and the peripheral nervous system (PNS) is everything else.

2.Like the nervous system as a whole, the peripheral nervous system also has two divisions: the sensory division and the motor division. The sensory division of the PNS carries sensory information from the body to the central nervous system.

3.Sensory receptors with corresponding stimuli to which they respond.

Receptor Stimulus

Apmullae of Lorenzini (primarily function as electroreceptors) Electric fields, salinity, and temperature

Baroreceptors Pressure in blood vessels

Chemo receptors Chemical stimuli

Electromagnetic radiation receptors Electromagnetic radiation

Electroreceptors Electrofields

Hydroreceptors Humidity

Infrared receptors Infrared radiation

Magnetoreceptors Magnetic fields

Mechanoreceptors Mechanical stress or strain

Nociceptors Damage or threat of damage to body tissues (leads to pain perception)

Osmoreceptors Osmolarity of fluids

Photoreceptors Visible light

Proprioceptors Sense of position

Thermoreceptors Temperature

Ultraviolet receptors Ultraviolet radiation

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3 years ago

In cats, coat color is an X-linked trait with incomplete dominance. Yellow coat is caused by the allele XT and black coat by the

natulia [17]

Answer:

The correct answer is - XTXt

Explanation:

In the question, it is given that in cats the coat color is an X-linked trait that shows incomplete dominance if present in heterozygous condition.

The allele for yellow allele = XT (it is dominant allele)

The allele for black coat = Xt (it is recessive allele)

The amle cat can not show the heterozygous condition or tortoise coat as they have only one X chromosome so they will be either yellow coat cats or black coat cats.

In female cats the tortoise coat will show when the both allele present together: XTXt due to their incomplete dominance.

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3 years ago

Spanish scientist observes that salmon produce more eggs when grown in a warmer aquariums he asked his colleagues in the United

Luba_88 [7]

No. The fish where he lives could be adapted to the warmer waters of a southern state/country.

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3 years ago

DNA damage can occur as a result of exposure to chemicals or ultraviolet radiation. What happens during nucleotide excision repa

katovenus [111]

Answer:

D. Enzymes open the DNA strand, remove a segment of DNA from the strand that contains the damage, and resynthesize the correct DNA sequence.

Explanation:

From time to time, the DNA gets exposed to certain chemicals or radiation that damages it. However, the cell has a DNA repair mechanism in place called NUCLEOTIDE EXCISION REPAIR (NER).

NUCLEOTIDE EXCISION REPAIR (NER) is one of the DNA repair mechanisms in which certain enzymes open the DNA strand, remove a segment of DNA that contains the damaged gene or nucleotide bases, and resynthesize the correct DNA sequence using the pair of the damaged one.

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3 years ago

Feather color in a certain species of bird is controlled by a pair of alleles that exhibit incomplete dominance. if birds that a

3241004551 [841]

The heterozygous birds phenotype would therefore be black and white because both parent genes are dominant so they would be fully expressed,none would overpower the other(no dominant or recessive) this is known as Codominance and and example of this is with the blood types.

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4 years ago