DP Biology (first assessment 2025)

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Question 22M.2.SL.TZ1.1i

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.2.SL.TZ1.1i
Level SL Paper 2 Time zone TZ1
Command term State Question number i Adapted from N/A
i.
[Maximum mark: 1]
22M.2.SL.TZ1.1i
(i)

State one feature of the sloth that would indicate it is a mammal.

[1]

Markscheme
  1. mammals have mammary glands;
  2. produce milk for their offspring;
  3. bodies covered in hair/fur;

Characteristic must be exclusive to mammals.

If more than one answer, use the first one given.

Examiners report

Have hair/fur or feed young with milk were the best answers. Many students wrote "give birth to live young;" While this is true of most mammals, monotremes lay eggs. Furthermore, some other animals give birth to live young (ovoviviparous) such as some reptiles and some groups of fish. We credited only characteristics exclusive to all mammals.

Syllabus sections