biology

Cambridge Lower Secondary Checkpoint SCIENCE 1113/01 Paper 1 April 2021 MARK SCHEME Maximum Mark: 50 Published This mark scheme is published as an aid to teachers and learners, to indicate the requirements of the examination. However, we have not been able to adjust it to reflect the full range of answers that would have been seen as a part of the normal moderation and marking process, and it does not necessarily contain all the possible alternatives that might have arisen. Cambridge will not enter into discussions about the mark scheme. 1113/01 Checkpoint Lower Secondary – Mark Scheme April 2021 PUBLISHED © UCLES 2021 Page 2 of 14 General guidelines on marking Many descriptive answers can be expressed in a variety of ways. Professional judgement can be used in these cases, providing it matches the marking points and further information in the mark scheme. Answers may have words spelt incorrectly. Credit is normally given for phonetically correct answers, unless the word has a scientifically different meaning. For example, where the answer should be antennae, credit will be given for antena but not for anthen (too close to anther). Only the science is being assessed so answers do not need to be grammatically correct. Significant figures will be indicated in the question or in the mark scheme. Unless specified all marking points are independent. Annotations and abbreviations / or alternate responses for the same marking point ( ) brackets the words or units in brackets do not need to be stated, for example, (recycles or releases or provides) minerals = minerals scores the mark underline exact word is required Accept an acceptable response Do not accept indicates an incorrect response that would contradict another otherwise correct alternative Ignore indicates an irrelevant answer that is not creditworthy. Full marks can still be achieved even with answers that are ignored. Note provides extra information when necessary ecf error carried forward; marks are awarded if an incorrect response has been carried forward from earlier working, provided the subsequent working is correct ora or reverse argument; for example, as mass increases, volume increases could be written as mass decreases, volume decreases 1113/01 Checkpoint Lower Secondary – Mark Scheme April 2021 PUBLISHED © UCLES 2021 Page 3 of 14 Question Answer Marks Further Information 1(a) A B C D E 1 more than one answer circled = 0 marks 1(b) A B C D E 1 more than one answer circled = 0 marks 1(c) mouth and stomach 1 both needed for the mark either order Accept throbi