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Levart [38]
3 years ago
7

A group of students designed an experiment to determine the effect of compost on the germination and growth of plants. The stude

nts set up experimental plots by mixing different ratios of soil and compost. They planted 20 pea and 20 melon seeds in each plot and watered each plot regularly. The students recorded the number of seeds that germinated, and as the plants grew, they recorded plant length, number and size of leaves, and general health observations. The following observations were recorded. In all treatments, more pea seeds germinated than melon seeds. There was a week of rainy weather at three weeks. Melon plants developed a fungal growth at four weeks. Melon plants grew longer than pea plants, but many melon leaves showed signs of yellowing as the weeks passed. The students concluded that pea plants grew better in compost than did melon plants. Which of the following best addresses the validity of the conclusion made by the students?
(A) The conclusion is valid because the independent and dependent variables in experiment were controlled.
(B) The conclusion is valid because the experimental design included in a large sample size.
(C) The conclusion is invalid because other variables in the experiment (both biotic and abiotic) affected the results.
. (D) The conclusion is invalid because the units of measurments were not given in experimental design.
Biology
1 answer:
pshichka [43]3 years ago
3 0

Answer: (A) The conclusion is valid because the independent and dependent variables in experiment were controlled.

Explanation: There are some basics requirements in order for an experiment to be valid: hypothesis, monitoring, independent and dependent variables and constants.

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Question Types:

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  • True/False
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Multiple choice, objective response, or MCQ (for Multiple Choice Question) is a form of an objective assessment in which respondents are asked to select only correct answers from the choices offered as a list.

True/False tests contain statements that the student marks as being either true or false. In order to qualify as true, all parts of the statement must be true. In general, true-false tests check your knowledge of facts.

A matching question is two adjacent lists of related words, phrases, pictures, or symbols. Each item in one list is paired with at least one item in the other list. Matching may be considered to be a variant of multiple-choice in which more than one choice is correct.

While opinions may differ, most teachers believe a short answer question typically requires a "short" answer. That doesn't mean an answer lacking depth analysis or information. It simply means an answer that is concise and includes just enough information to accurately and fully answer the question being asked.

Fill in the Blank questions are not opinion-based, which means that learners must be able to use the information they have mastered during the lesson to correctly answer the question. Fill in the Blank questions usually contain a sentence or paragraph featuring a blank space.

Definition of the essay question: an examination question that requires an answer in a sentence, paragraph, or short composition Examples of the essay question in a sentence.

The oral exam (also oral test or viva voce; Rigorosum in German-speaking nations) is a practice in many schools and disciplines in which an examiner poses questions to the student in spoken form. The student has to answer the question in such a way as to demonstrate sufficient knowledge of the subject to pass the exam.

A Checkboxes question lets survey takers select multiple answers from a list of choices. Use this question when you want people to be able to choose more than one answer option in the same question. Jump to...

Website(s) Used for Research:

https://help.surveymonkey.com/articles/en_US/kb/Available-question-types-and-formatting-options

http://personal.psu.edu/bxb11/QuizQuestions/quizmatching.html#:~:text=A%20matching%20question%20is%20two%20adjacent%20lists%20of,in%20which%20more%20than%20one%20choice%20is%20correct.

https://help.surveymonkey.com/articles/en_US/kb/Checkbox#:~:text=A%20Checkboxes%20question%20lets%20survey%20takers%20select%20multiple,answer%20option%20in%20the%20same%20question.%20Jump%20to

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