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Tcecarenko [31]
3 years ago
12

A long-term relationship between two species that usually involves an exchange of food or energy is

Biology
2 answers:
AlekseyPX3 years ago
8 0
The answer is b. symbiosis
SVETLANKA909090 [29]3 years ago
6 0

Answer: The correct option is B) Symbiosis.

Symbiosis can be defined as a long term and a close biological interaction or relationship between two species, which involves the exchange of energy or food between them.

Niche is defined as the the position or ecological role played by an organism in a community of plants and animals.  It is determined by a set of environmental conditions, resources, and interactions it require.

On the other hand, Competition ( organisms compete for same environmental resources) and predation ( one population becomes the food resource for another population) are the other forms biological interactions.



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For a species with a diploid number of 26, indicate how many chromosomes will be present in the somatic nuclei of individuals th
zhuklara [117]

Answer:

<h2>Haploid=13</h2><h2>triploid=39 </h2><h2>tetraploid=52</h2><h2>trisomic=14 </h2><h2>monosomic=12</h2>

Explanation:

Given;

A species with a diploid number of 26,  so 26= 2n ( a diploid cell),

so in haploid condition, chromosome number becomes half (13 in this case). triplod is when 2n + n, and 2n +2n ( tetploid). Trisomy and monosomy is the addition or deletion of a sinlge chromosome of a sinlge set  .

Haploid=13, one chromosome from each pair of chromosome set,

triploid=39 (13× 3); diploid+ n( 3n)

tetraploid=52 (13× 4) 4n

trisomic=14 (13+1) ; n+1

monosomic=12 (13-1); n-1

7 0
3 years ago
____ a rare and attractive mineral that can be worn as jewelry
e-lub [12.9K]
Gemstone :) Is a rare and attractive mineral that can be worn as jewelry
5 0
3 years ago
The blood sugar in your body is maintained by a gland that acts as an exocrine and endocrine gland. It is the
Irina-Kira [14]

Answer:

Pancreas.

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Pancreas is an organ that acts as both exocrine as well as endocrine gland. As exocrine gland, it secretes digestive enzymes into the small intestine that help in digestion of complex food molecules.

As an endocrine gland, it secretes glucagon (from alpha cells) and insulin (from beta cells) hormones, directly into the bloodstream. Both of these hormones are responsible for the regulation of blood sugar level in the body.

Thus, the correct answer is 'pancreas.'

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3 years ago
HELP ASAP WILL GIVE 100 POINTS AND WILL MARK FIRST-PERSON BRAINLIEST FOR ANSWERING ALL QUESTIONS.
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Answer:

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Explanation:

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Your answer is <span>1. 
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3 years ago
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