MCAS Biology
Ms. Chen
Name:
Date:
Do Now 12/8/15
Directions. 1. Under KEY WORDS. 2. Circle the best answer. 3. EXPLAIN why you chose that answer.
1.
Which of the following statements describes a role of plants in the water cycle?
A. Plants release water from their roots into the soil.
B. Plants transfer water to bacteria during nitrogen fixation.
C. Plants release water vapor into the atmosphere during transpiration.
D. Plants convert water vapor into carbon dioxide during photosynthesis.
2. Which of the following statements provides the best scientific evidence that chimpanzees and
rhesus monkeys come from a common ancestor?
A. They live in similar habitats.
B. They exhibit similar behaviors.
C. They have similar nutritional needs.
D. They have similar genetic sequences.
3. In 1915, a disease killed almost all the oysters in a Canadian bay. The few oysters that survived
reestablished the population. By 1940, the disease-causing organism was still present in the bay,
but the size of the oyster population was greater than it was before 1915.
Which of the following statements describes what most likely occurred in the oyster population between
1915 and 1940?
A. The oysters that survived in 1915 bred with other species, so the offspring could not
be infected by the disease anymore.
B. The oysters that survived in 1915 had offspring that learned to fight the disease, so
disease rates in the oyster population were lower.
C. The oysters that survived in 1915 had resistance to the disease, so the proportion of
resistant oysters in the population increased by natural selection.
D. The oysters that survived in 1915 mutated to reproduce more quickly, so the
reproductive rate exceeded the disease rate in the oyster population.
4. Under normal conditions, which of following causes a zygote to form?
A. Mitosis takes place.
B. Meiosis takes place.
C. Two gametes combine.
D. Asexual reproduction occurs.