1.3. Features of organisms
A subsection of Biology, 0610, through 1. Characteristics and classification of living organisms
Listing 10 of 187 questions
For Examiner's Use Fig.1.1 shows six arthropods, each of which could carry disease organisms. E A C B D F Use the key to identify each of the arthropods. Write the name of each arthropod in the correct box of Table 1.1. As you work through the key, tick () the boxes in Table 1.1 to show how you identified each arthropod. Arthropod A has been completed for you as an example. Key arthropod 1 Wings present ………………………………… Wings absent ………….………………………… 2 Wings shorter than abdomen …………………… Wings longer than abdomen ……………………. 3 Abdomen long and narrow ……………………… Abdomen short and broad ………………………. 4 Has three pairs of legs ………………………… Has four pairs of legs ……………………………. 5 One pair of legs shorter than the other pairs …. All pairs of legs of similar length …………… … go to 2 go to 4 go to 3 Musca Anopheles Periplaneta go to 5 Ornithodorus Pulex Pediculus For Examiner's Use Table 1.1 1 1 2 2 3 3 4 4 5 5 name of arthropod A    Pediculus B C D E F
0610_s09_qp_2
THEORY
2009
Paper 2, Variant 0
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For Examiner's Use Fig.1.1 shows the shells of five molluscs. A B C D E Fig.1.1 Use the key to identify each of the molluscs which normally live inside the shells. Write the name of each mollusc in the correct box of Table 1.1. As you work through the key, tick () the boxes in Table 1.1 to show how you identified each mollusc. Key name of mollusc 1 Shell made of two parts Shell made of one part only 2 Both shell halves have ridges running down the shell Both shell halves are smooth 3 Shell tightly coiled Shell conical with no coil 4 Bottom coil less than a quarter of the length of the shell Bottom coil more than half of the length of the shell go to 2 go to 3 Cardium Venerupis go to 4 Patella Turritella Buccinum Table 1.1 1 1 2 2 3 3 4 4 name of mollusc A B C D E
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THEORY
2010
Paper 2, Variant 2
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shows five molluscs. They all live in the sea or on the shore. B A C E D Use this key to identify these molluscs. Shell has one part Go to 2 Shell has two parts C. edule Shell has a hole in the top F. aperta Shell does not have a hole in the top Go to 3 Shell is narrow, with an obvious point C. australis Shell is rounded with no obvious point Go to 4 Shell is plain, with no pattern L. littorea Shell is patterned T. regina Write your answers in Table 1.1. Table 1.1 mollusc name A B C D E
0610_s14_qp_22
THEORY
2014
Paper 2, Variant 2
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shows the nematode, Caenorhabditis elegans. State the genus of this nematode. State two structural features of nematodes. Nematodes feed on dead and decaying material. Explain why this gives nematodes an important role in ecosystems. shows the life cycle of C. elegans. The diploid number of this species is 12. adult which has both male and female sex organs diploid body cells of the adult embryo passes out of adult and continues development not drawn to scale egg sperm larval stage P Q Suggest why there is very little genetic variation in the offspring of the adult nematode shown in . State the haploid number of C. elegans. Explain why meiosis occurs at P and mitosis occurs at Q. meiosis at P mitosis at Q C. elegans was one of the first organisms to have its genome sequenced. An organism’s genome is the sum of all its genetic material. Gene sequencing identifies all the component parts of the DNA that makes up the genome. State where DNA is located in a cell.
0610_s14_qp_31
THEORY
2014
Paper 3, Variant 1
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Define the terms herbivore and carnivore. herbivore carnivore shows some organisms collected from underneath a rotting log. not to scale can be used to identify these organisms. herbivores carnivores soil mite centipede ground beetle rove beetle not to scale potworm slug springtail millipede Some students used to identify and count the numbers of each soil organism. Some of their results are shown in Table 7.1. Table 7.1 herbivores carnivores names of organisms millipedes potworms slugs soil mites springtails centipedes ground beetles rove beetles number of organisms total number of organisms Complete Table 7.1 by identifying and counting the four remaining named organisms in . Write your answers in the four spaces in Table 7.1. Use the information in Table 7.1 to draw a pyramid of numbers in . Write the names of the two types of organism in the spaces at the side. The row for the rotting log (the producer) has been done for you. pyramid of numbers type of organism producer
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THEORY
2021
Paper 3, Variant 3
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Questions Discovered
187