Biology 0610 · IGCSE · Concept and uses of classification systems
Concept and uses of classification systems — practice question
Living organisms are sorted into groups according to their characteristics. Myriapods are one of the major groups of arthropods.
Fig. 1.1 shows four main groups of arthropods.
The diagram shows arthropods branching into: group 1 myriapods, group 2, group 3, group 4.
Myriapods may be grouped into four classes, 1, 2, 3 and 4. Fig. 1.2 is a dichotomous key that can be used to tell the four myriapod classes apart.
The key shows:
- myriapods
- no eyes
- hairs on most body segments → class 1
- no hairs on body segments → class 2
- eyes present
- one leg on each side of each body segment → class 3
- two legs on each side of each body segment → class 4
Fig. 1.3 displays six myriapods labelled species J, K, L, M, N and O (not to scale).
(a)[2]
State two features of myriapods that can be used to tell them apart from other arthropods.
(b)[2]
State the names of two other arthropod groups shown in Fig. 1.1.
(c)[3]
Complete Table 1.1 by using the key in Fig. 1.2 to place the six myriapods in Fig. 1.3 into the four classes.
(d(i))[2]
State the genus name and the kingdom name of the myriapod in Fig. 1.4.
(d(ii))[1]
Suggest why cells die if the mitochondria fail to work.
Worked solution & mark scheme
This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “numerous body segments” …