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Deffense [45]
3 years ago
10

Sara and Juan conducted an experiment to test which soil would be BEST for growing plants.

Biology
2 answers:
pantera1 [17]3 years ago
6 0

Answer:

A. Type of soil

Explanation:

A control experiment is the one that is used to checkmate the real experiment.

In this case, the fourth jar that contains the mixture of all the types of the soil is considered as the control experiment.

In a nutshell, it should be generally understood here that the type of soil serves as the control for the experiment.

Anna35 [415]3 years ago
5 0

Answer:

D) amount of water given to the seeds

Explanation:

<em>The controlled variable in the experiment would be the amount of water given to the seeds.</em>

<u>A controlled variable in an experimental investigation is a variable that remains unchanged throughout the entire duration of the experiment. It remains unchanged because a slight variation could change the outcome of the experiment and renders the result inaccurate.</u>

In the experiment, the amount of water given to the seeds in the four pots must be constant because water represents an important factor in the growth of plants. A slight variation in the amount of water given to the pots will influence the growth of the plant. It will become difficult to determine if the variation in the growth of the plants is due to the water variation or different soil types.

<em>The correct option is D.</em>

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4. Analyze Explain why the form of
trapecia [35]

Analyze Explain why the form of  reproduction is given below

Explanation:

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2.Sexual reproduction is the most common life cycle in multicellular eukaryotes, such as animals, fungi and plants.

3.Sexual reproduction does not occur in prokaryotes (organisms without cell nuclei), but they have processes with similar effects such as bacterial conjugation, transformation and transduction, which may have been precursors to sexual reproduction in early eukaryotes.

4.In human reproduction, each cell contains 46 chromosomes in 23 pairs. Meiosis in the parents' gonads produces gametes that each contain only 23 chromosomes that are genetic recombinants of the DNA sequences contained in the parental chromosomes. When the nuclei of the gametes come together to form a fertilized egg or zygote, each cell of the resulting child will have 23 chromosomes from each parent, or 46 in total.

5.In plants only, the diploid phase, known as the sporophyte, produces spores by meiosis that germinate and then divide by mitosis to form a haploid multicellular phase, the gametophyte, that produces gametes directly by mitosis. This type of life cycle, involving alternation between two multicellular phases, the sexual haploid gametophyte and asexual diploid sporophyte, is known as alternation of generations.

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