IB Biology SL D3.1 Reproduction questions

Exam-style multiple choice and written questions with full markschemes. Check multiple choice answers straight away, or type, photograph or draw a written answer and get it marked.

Type
Multiple choiceWritten
Difficulty
EasyMediumHard

Question 1

Multiple choiceEasy1 mark

A student traces the route taken by sperm in a male reproductive system diagram. Which structure carries sperm from the epididymis towards the urethra?

Show answer and explanation

Answer: A. The sperm duct carries sperm from the epididymis towards the urethra.

B: confuses the later passage through which semen leaves the body with the duct that carries sperm from the epididymis.
C: identifies a site of sperm production rather than the structure that transports sperm from the epididymis.
D: confuses a gland that contributes fluid to semen with a sperm-transporting duct.
Remember: sperm travel from the epididymis through the sperm duct towards the urethra.

Question 2

Paper 2Medium6 marks

A nursery propagates a plant cultivar from stem cuttings, which reproduce asexually, and from seeds produced by sexual reproduction. Groups of 40 plants from each method were grown under two sets of conditions. The number of plants that met the nursery’s marketability standard is shown.

Growing conditionsCuttings (asexual), out of 40Seedlings (sexual), out of 40
Stable3628
Hotter and drier825
(a)

Calculate the difference between the proportions of marketable cuttings and seedlings in the hotter and drier conditions. Give your answer as a proportion or in percentage points.

[1]
(b)

If conditions remain stable and the cultivar is already suited to them, recommend a propagation method. Explain why it may be advantageous.

[2]
(c)

Explain how sexual reproduction could produce offspring better suited to hotter and drier conditions.

[3]

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