HISET SCIENCE TEST EXAM PREP STUDY
GUIDE QUESTIONS ANSWERS COMPLETE
SOLUTION BUNDLE
●● What is a beaver lodge?
Answer: A small island made of tree branches and mud, serving as a
home for the beaver family.
●● How do beavers impact their ecosystem?
Answer: By changing their habitat, which affects the local ecosystem.
●● What was the purpose of the scientists' study involving beavers?
Answer: To monitor the impact of beavers on the environment over six
years.
●● What were the average sediment levels above and downstream of the
beaver dam?
Answer: 120 mg/L above the dam and 50 mg/L downstream.
●● What is the average nitrogen level above and downstream of the
beaver dam?
Answer: 3.2 mg/L above the dam and 2.0 mg/L downstream.
,●● What is the average phosphate level above and downstream of the
beaver dam?
Answer: 1.0 mg/L above the dam and 0.2 mg/L downstream.
●● What type of interaction exists between beavers and the
microorganisms in their stomach?
Answer: Mutualism, as microorganisms help digest cellulose while
benefiting from nutrients.
●● How does the felling of trees by beavers affect the habitat?
Answer: It allows more sunlight to reach the ground, enabling better
growth of understory vegetation.
●● What is one benefit of the beaver dam during storms?
Answer: It reduces the risk of flooding downstream.
●● How do beaver dams affect the habitat for insects and other
organisms?
Answer: They increase the wetted area by the stream, providing a unique
habitat.
●● What is the body temperature regulation mechanism of frogs?
Answer: Frogs are cold-blooded and cannot generate their own body
heat.
, ●● What is the typical depth of breeding ponds for northern leopard
frogs?
Answer: 1.5 - 2.0 meters.
●● Why do northern leopard frogs choose specific ponds for breeding?
Answer: These ponds are shallow, lack fish, and have enough dissolved
oxygen.
●● What happens to northern leopard frogs during winter?
Answer: They hibernate at the bottom of ponds, covered with mud.
●● How does the body temperature of frogs change with ambient
temperature?
Answer: The body temperature increases as the ambient temperature
increases.
●● What is the likely heart rate of a northern leopard frog at 30°C with
10% inspired oxygen?
Answer: The heart rate would be predicted based on the oxygen level
and temperature.
●● What is the significance of the beaver dam in terms of water quality?
GUIDE QUESTIONS ANSWERS COMPLETE
SOLUTION BUNDLE
●● What is a beaver lodge?
Answer: A small island made of tree branches and mud, serving as a
home for the beaver family.
●● How do beavers impact their ecosystem?
Answer: By changing their habitat, which affects the local ecosystem.
●● What was the purpose of the scientists' study involving beavers?
Answer: To monitor the impact of beavers on the environment over six
years.
●● What were the average sediment levels above and downstream of the
beaver dam?
Answer: 120 mg/L above the dam and 50 mg/L downstream.
●● What is the average nitrogen level above and downstream of the
beaver dam?
Answer: 3.2 mg/L above the dam and 2.0 mg/L downstream.
,●● What is the average phosphate level above and downstream of the
beaver dam?
Answer: 1.0 mg/L above the dam and 0.2 mg/L downstream.
●● What type of interaction exists between beavers and the
microorganisms in their stomach?
Answer: Mutualism, as microorganisms help digest cellulose while
benefiting from nutrients.
●● How does the felling of trees by beavers affect the habitat?
Answer: It allows more sunlight to reach the ground, enabling better
growth of understory vegetation.
●● What is one benefit of the beaver dam during storms?
Answer: It reduces the risk of flooding downstream.
●● How do beaver dams affect the habitat for insects and other
organisms?
Answer: They increase the wetted area by the stream, providing a unique
habitat.
●● What is the body temperature regulation mechanism of frogs?
Answer: Frogs are cold-blooded and cannot generate their own body
heat.
, ●● What is the typical depth of breeding ponds for northern leopard
frogs?
Answer: 1.5 - 2.0 meters.
●● Why do northern leopard frogs choose specific ponds for breeding?
Answer: These ponds are shallow, lack fish, and have enough dissolved
oxygen.
●● What happens to northern leopard frogs during winter?
Answer: They hibernate at the bottom of ponds, covered with mud.
●● How does the body temperature of frogs change with ambient
temperature?
Answer: The body temperature increases as the ambient temperature
increases.
●● What is the likely heart rate of a northern leopard frog at 30°C with
10% inspired oxygen?
Answer: The heart rate would be predicted based on the oxygen level
and temperature.
●● What is the significance of the beaver dam in terms of water quality?
