Unit 2 Vision and Light Ch. 4 review

What is the main reason for the decrease in the population of Tokay geckos in the rainforest?

• The destruction of their natural habitat

• The increase in the number of predators

• The decrease in the availability of prey

• The installation of new highway lights

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What determines whether an animal needs to be able to see well in high or low light conditions?

• The location of the animal

• The age of the animal

• The size of the animal

• The type of receptors an animal has

What happens when an animal's receptors don't respond enough or respond too much for the brain to process information and form an image?

• The animal sees well

• The animal cannot see at all

• The animal sees blurry

• The animal sees in black and white

Tags

NGSS.MS-LS1-8

What is the purpose of a model in scientific investigations?

• To waste time and resources

• To confuse scientists

• To make experiments more difficult

• To answer questions about the real world

Tags

NGSS.MS-ETS1-4

NGSS.MS-LS2-3

NGSS.MS-PS1-1

1. Elephants have a very complex sensory motor system. They have special cells, called Pacinian corpuscles, that let elephants use their sense of touch. The corpuscles are made up of membranes and connective tissue, which form layers. A slimy gel is found in between each of these layers. When there is motion or vibrations in the environment, pressure builds up and causes the gel and corpuscles to change. This sends a signal to the elephant’s brain. Pacinian corpuscles are found in the elephant’s trunk, as well as in the elephant’s feet.

How can these sensory structures in the feet help the elephant survive?

•  by sending a signal to the elephant if a predator is nearby

• by sending a signal to the elephant that a female that is ready to mate

• by sending a signal to the elephant to lift something that is heavy to protect it

•  by sending a signal to the elephant not to eat something that may be poisonous

Tags

NGSS.MS-LS1-3

Nine-banded armadillos are usually active at night. They have very small eyes and cannot see objects that are far away. They use their noses to find food that is as deep as 20 centimeters underground. Armadillos also use their noses to loosen soil and use their claws to dig in the soil. They use their good hearing to listen for predators.

Which claim is supported by the information about armadillos

• Armadillos use their sense of smell to find food.

• Armadillos use their sense of touch to hide from predators.

•  Armadillos use their sense of hearing to find food that is far away.

•  Armadillos use their sense of sight to see predators that are nearby.

An armadillo is looking for food at night and finds a new object in its environment. Which statement describes how the armadillo will most likely use its senses to take in information about the new object to determine if the new object is food?

• The armadillo will use its ears and compare the sound the object makes to known sounds.

• The armadillo will use its nose and compare the smell of the object with known smells.

• The armadillo will use its eyes and compare the look of the object with the look of known objects.

• The armadillo will use its claws and compare the feel of the object with the feel of known objects.

Tags

NGSS.MS-LS1-8

After forming the image, the brain compares that image to…

•  its memories then can make decisions to help it survive

• its sight then can make decisions

• its brain and then can decide how to react

• its prey to determine what to do next

Tags

NGSS.MS-LS1-8

animals that are active a night

• diurinal

• nocturnal

animals active during day

• diurinal

• nocturnal