DP Biology (last assessment 2024)

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Question 19M.2.SL.TZ1.a

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.SL.TZ1.a
Level SL Paper 2 Time zone TZ1
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 1]
19M.2.SL.TZ1.a

The table gives common names and binomial names for some mammals.

State one feature that characterizes these species as mammals.

[1]

Markscheme

fur/hair/mammary glands/feed young with milk/three inner-ear bones/lungs ventilated by diaphragm/lungs contain alveoli ✔

Examiners report

The most common correct answers were having fur/hair or providing milk. Warm-blood or live birth were often given but were not accepted as other classes of animals exhibit these characteristics.