Question
A cloning method used for livestock involves in vitro fertilization (IVF) with selected male and
female gametes. The diagram shows the steps followed after in vitro fertilization.
What does X represent?
A. A group of eggs
B. An embryo
C. A follicle
D. A group of zygotes
Answer/Explanation
Question
A group of students used quadrat sampling to gather data on the presence of two plant species in
an area. They performed a chi-squared test to assess whether the distribution of the two species
was associated. The calculated value of the chi-squared test was below the critical value. What
can be deduced from the results of the chi-squared test?
A. The alternative hypothesis is accepted.
B. The distribution of one species is independent from the other.
C. Both species are evenly distributed in the grassland ecosystem.
D. The distribution of both species is correlated with abiotic factors.
Answer/Explanation
Question
The diagram shows part of a food chain. The left box represents producers and the right box
primary consumers. Arrows show energy flows.
Which forms of energy are represented by X and Y?
Ans: D
Question
Huntington’s disease is an autosomal dominant genetic disease. What are the chances of two parents that are heterozygous for the gene having a child with Huntington’s disease?
A. 25%
B. 50%
C. 75%
D. 100%