1.How do gills of fish help their survival?
2.Which organism would be least likely to survive a migration?
3.Lake Victoria in East Africa is home to many species of fish called cichlids. In 1954 the predatory Nile perch was introduced to Lake Victoria. The Nile perch became the dominant fish species in the lake by the mid-1980s. The number of cichlid species in the lake decreased as the Nile perch population increased. The perch preyed heavily on cichlid species that fed on algae and debris on the bottom of the lake. Algae in the lake increased, and oxygen levels decreased. The surface area of the gills of some cichlid species has increased in over 20 years.
4.Wheat was one of the first plant crops that humans domesticated. In the process of domestication, the wild form of wheat was eventually changed into a form more suited to human agricultural practice.
Early farmers most likely used seeds only from wheat plants with --
5.Students observe two varieties of flowering plants that grow in the Texas grasslands. Galanthus flowers are better able to survive in the grasslands when there are periods of drought compared to Bluebell flowers.
Based on the picture above, what structures allow Galanthus flowers to better survive drought conditions compared to the Bluebell flower
6.Some dairy farmers want to increase the amount of milk production by their cows. How can the farmers use selective breeding to increase milk production?
7.Part of a human body system is pictured.
The main function of this system is to --
8.What purpose does the xylem in a plant serve?
9.The main function of the muscular system is --
10.What two body systems are most useful in getting nutrients from the food you eat to your brain?
11.This drawing shows a human body system.
What is the primary function of this body system?
12.Many birds, such as the barn swallow, have hollow bones, while a few birds, such as the ostrich, have solid bones. Which best explains this adaptation that are seen in birds
13.Chameleons are reptiles that have the ability to hide from predators and prey by blending in with their environment. They can change the pattern and/or color of their skin.
This ability is known as --
14.A few years ago the population of male blue moon butterflies on the island of Samoa declined. One hypothesis for the decline of the male butterflies is that a parasite infected the cells of female butterflies. The parasite was passed to offspring through the females' eggs and killed the male butterfly embryos. At one point during the decline, nearly all the butterflies in the population were females, but after five years the number of males in the population increased significantly.
Which explanation most likely accounts for the increase in the number of male butterflies in the five years after the initial parasite problem
15.Which table best shows some functions of the circulatory, respiratory, digestive, an endocrine systems?
What body systems are described in the concept map above?
17.What characteristics describe organisms classified in to the Kingdom Fungi?
18.The characteristics of a particular organism are listed below.
In which kingdom should this organism be classified?