The null hypothesis is: there is no significant effect negative effect of increasing caffeine concentrations in nectar on the number of floral visits by bees.
If the number of floral visits by bees decreased with increasing nectar caffeine concentration, the null hypothesis is rejected. If there were no significant changes, the null hypothesis is not rejected.
<h3>What is a null hypothesis?</h3>
A null hypothesis a hypothesis which states that there is no significant difference between two populations or sample under study.
A null hypothesis can also state that there is no significant difference between variables in a study.
The experiment is to test potential negative effects of increasing caffeine concentrations in nectar on the number of floral visits by bees.
The null hypothesis is that there is no significant effect negative effect of increasing caffeine concentrations in nectar on the number of floral visits by bees.
The experiment will be designed as follows:
- Four potted plants with normal nectar caffeine concentration (serving as control), x2 nectar caffeine concentration, x3 nectar caffeine concentration, and x5 nectar caffeine concentration are obtained and kept in a garden.
- The number of floral visits by bees are recorded after 15 days.
If the number of floral visits by bees decreased with increasing nectar caffeine concentration, the null hypothesis is rejected. However, if there were no significant changes, the null hypothesis is not rejected.
In conclusion, a null hypothesis is a hypothesis of no significant difference.
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Explanation:
The cells store glycogen and neutralize toxins and are present in coelomic fluid of some annelids. They are yellowish in colour due to the presence of yellow granules called chloragosomes.
These cells are derived from the inner coelomic epithelium, and help in excretory functions, as most commonly demonstrated in earthworms.
Answer:
they are both sources of energy
Explanation:
Both the chromosome Y and the mtDNA represent specific lineages, it means that they can be used to reconstruct the evolutionary history by patrilineal and matrilineal relationships, respectively. Phylogeography and phylogeny are disciplines that often use both types of genomic sequences in order to avoid the problem that represents the genetic phenomenon of recombination when tracing the evolutionary history of organisms
The answer is D
Explanation: In humans, recessive sex-linked traits generally occur on the X chromosome. Since males are (XY), they will inherit only one sex-linked allele on their X chromosome.
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