Species Interactions

A dog lives in a your friend's backyard. The backyard contains grass, some rose bushes, and a few orange trees. What term best describes the backyard to the dog?

• Habitat

• Niche

• Microhabitat

• Ecosystem

A population of worms eat decaying leaves and grass in the soil of your backyard. What terms best describes this statement?

• This is the worm's habitat

• This is the worm's microhabitat

• This is the worm's niche

• This is the worm's trophic level

Tags

NGSS.MS-LS2-2

Insects, birds, lizards and squirrels all live in a tree. They all share the same...

• Habitat

• Microhabitat

• Niche

• Range of Tolerance

When different species live together.

• symbiosis

• habitat

• competiton

• predation

Tags

NGSS.MS-LS2-2

In a science experiment, equal-sized populations of two species of earthworms are placed in a terrarium filled with soil. Abiotic factors such as temperature and water supply are kept constant in the terrarium, as is food in the form of bread scraps. The population of each species is observed and counted each day.

In agreement with the competitive exclusion principle, what is the MOST LIKELY outcome of the experiment over time?

• Only one population will thrive; the other population will decrease to zero.

• Both populations will reach the same size, which is the carrying capacity of the terrarium for earthworms.

• One population will be about twice the size of the other.

• Both populations will reach the same size, which is about half the carrying capacity of the terrarium for earthworms.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A flea and dog are an example of______, because the flea irritates the dog’s skin and feeds on its blood

• Herbivory

• Mutualism

• Commensalism

• Parasitism

Certain bacteria live in the digestive tract of humans, and their relationship is an example of because the bacteria help humans to break down the food they eat.

• Hebivory

• Mutualism

• Parasitism

• Commensalism

What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.

• commensalism
• mutualism
• parasitism
• predation

Cattle egrets eat insects off the back of an elephant, which is an example of_____  because the cattle egrets benefit without either harming or helping the elephants.

• Herbivory

• Parasitism

• Mutualism

• Commensalism

What type of symbiosis?  Skunks often live in burrows that have been dug and abandoned by woodchucks.  

• commensalism
• mutualism
• parasitism
• predation