Q3 Practice Exam 2024

An illustration and a dichotomous key are given. What is the correct classification for this organism?

• Order Araneae

• Order Scorpiones

• Order Araneae

• Order Amblypygi

Answer explanation

The correct classification for this organism is Order Araneae based on the provided illustration and dichotomous key.

When using a dichotomous key to identify organisms, what do we look at?
(a)  

• physical features

• weather patterns

• environment

• diet

Answer explanation

When using a dichotomous key to identify organisms, we look at physical features, such as shape, size, color, and other characteristics, to determine the correct classification.

Tags

7.11A

A dichotomous key for trees is provided. Hikers found a tree that has large brown cones and single sharp needles. What species of tree have the hikers found?

• Spruce

• Pine

• Fir

• Juniper

Answer explanation

The hikers have found a Spruce tree as it has large brown cones and single sharp needles, which are characteristic of Spruce trees.

What is the name of bird W?

• Geospiza

• Certhidea

• Camarhynchus

• Platyspiza

Answer explanation

The name of bird W is Geospiza, as it is the correct answer choice provided.

What step do we always start with when using dichotomous keys?

• 1

• 2

• Second

• third

Answer explanation

When using dichotomous keys, we always start with the first step to identify the correct choice.

A characteristic or trait that helps an organism survive in its environment is a/an ​_______

• adaptation

• skill

• variation

• natural instinct

Answer explanation

An adaptation is a characteristic or trait that helps an organism survive in its environment by increasing its chances of survival and reproduction.

Variation in​ _________ would best help bison survive a harsh winter

• fur thickness

• Leg length

• Hearing quality

• Hoof size

Answer explanation

The variation in fur thickness would best help bison survive a harsh winter by providing insulation and protection against the cold weather.

The gills have allowed a fish to adapt to living underwater because gills allow the fish to _________

• breathe underwater

• swim

• Talk

• Get A's on exams

Answer explanation

The gills have allowed a fish to adapt to living underwater because gills allow the fish to breathe underwater.

An inherited trait that helps those organisms that have it to survive

• niche

• structure

• characteristic

• adaptation

Answer explanation

The correct choice is 'adaptation' because an adaptation is an inherited trait that helps organisms survive in their environment.

Tags

7.11B

Beak shape depends on...

• where birds live

• who they hang out with

• diet (fish or seeds)

• exercise

Answer explanation

Beak shape depends on diet (fish or seeds). The type of food a bird consumes influences the shape of its beak.

Tags

7.11B