Reproduction Practice Questions
IGCSE (Cambridge) · IGCSE Biology · 143 free MCQs with instant results and detailed explanations.
143
Total
42
Easy
72
Medium
29
Hard
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Sample Questions from Reproduction
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What is the main purpose of reproduction in living organisms?
A.
To produce energy
B.
To ensure species survival
C.
To grow larger
D.
To respond to environmental changes
Show Answer & Explanation
Correct Answer: B
The primary purpose of reproduction is to ensure the continuity of a species by creating offspring, thereby contributing to the survival of the species.
Q2
Easy
In humans, which structure is primarily responsible for the production of sperm?
A.
Ovary
B.
Testis
C.
Uterus
D.
Seminal vesicle
Show Answer & Explanation
Correct Answer: B
The testis is the male reproductive organ responsible for producing sperm as well as testosterone, making it crucial for reproduction in males.
Q3
Easy
Which of the following is a form of asexual reproduction?
A.
Budding in yeast
B.
Fertilization in flowers
C.
Cross-pollination
D.
Mating in animals
Show Answer & Explanation
Correct Answer: A
Budding in yeast is a form of asexual reproduction where a new organism develops from an outgrowth of the parent, unlike the other options which involve sexual reproduction.
Q4
Medium
Which of the following correctly describes asexual reproduction?
A.
Involves two parents and genetic variation.
B.
Involves only one parent and produces clones.
C.
Requires fertilization of gametes.
D.
Occurs only in flowering plants.
Show Answer & Explanation
Correct Answer: B
Asexual reproduction requires only one parent, resulting in offspring that are genetically identical to the parent, or clones.
Q5
Medium
In humans, the average duration of pregnancy is approximately how many weeks?
A.
24 weeks
B.
36 weeks
C.
40 weeks
D.
42 weeks
Show Answer & Explanation
Correct Answer: C
In humans, a typical pregnancy lasts about 40 weeks, which is the standard measurement for gestation.
Q6
Medium
Which hormone is primarily responsible for the development of the endometrium during the menstrual cycle?
A.
Estrogen
B.
Progesterone
C.
Testosterone
D.
Luteinizing hormone
Show Answer & Explanation
Correct Answer: B
Progesterone is the hormone that prepares the endometrium for potential implantation of an embryo after ovulation.
Q7
Medium
During which phase of meiosis does the exchange of genetic material occur between homologous chromosomes?
A.
Prophase I
B.
Metaphase I
C.
Anaphase I
D.
Telophase I
Show Answer & Explanation
Correct Answer: A
The exchange of genetic material, known as crossing over, occurs during Prophase I of meiosis when homologous chromosomes align.
Q8
Hard
Which of the following statements correctly describes the role of the placenta during human pregnancy?
A.
It provides oxygen and nutrients to the fetus and removes waste products.
B.
It acts as a barrier to prevent all forms of maternal infections.
C.
It produces hormones that prevent the mother's immune system from attacking the fetus.
D.
It stores genetic information that is passed from mother to child.
Show Answer & Explanation
Correct Answer: A
The placenta functions as an interface between the mother and the fetus, allowing for the exchange of oxygen and nutrients while facilitating the removal of carbon dioxide and waste products. This makes option A the correct statement.
Q9
Hard
In a certain plant species, the trait for flower color is controlled by two alleles: R (red) and r (white). If a heterozygous red-flowered plant (Rr) is crossed with a homozygous white-flowered plant (rr), what is the expected phenotypic ratio of their offspring?
A.
1 red : 1 white
B.
3 red : 1 white
C.
100% red
D.
2 red : 2 white
Show Answer & Explanation
Correct Answer: A
When Rr is crossed with rr, the possible offspring genotypes are Rr (red) and rr (white). Thus, the expected ratio of red to white flowers is 1:1, making option A correct.
Q10
Hard
In sexual reproduction, how does genetic variation occur in offspring?
A.
Through the sharing of identical DNA from both parents.
B.
By the random assortment of chromosomes during meiosis.
C.
Through the fusion of gametes without any genetic mixing.
D.
By the replication of somatic cells before fertilization.
Show Answer & Explanation
Correct Answer: B
Genetic variation in offspring is primarily caused by the random assortment of chromosomes during meiosis, which results in different combinations of genes being passed to the gametes. This process increases the genetic diversity of the offspring.
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Reproduction — IGCSE (Cambridge) IGCSE Biology Practice Questions Online
This page contains 143 practice MCQs for the chapter Reproduction in IGCSE (Cambridge) IGCSE Biology. The questions are organized by difficulty — 42 easy, 72 medium, 29 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.