Symbiotic Relationships and Levels of Organization

Which structure in some animals functions at the same level of organization as the kidney and heart?

• Digestive system

• pelvic bone

• blood

• nerve cell

Tags

NGSS.MS-LS1-3

Sieve-tube cells transport glucose from leaves throughout the plant as part of the phloem. A group of sieve-tube cells working together is considered a/an --

• tissue

• organ

• organelle

• organ system

Tags

NGSS.MS-LS1-3

A teacher took her class to a nearby park to make observations. Students were asked to write down their observations into their science notebooks. A student who observed a community would have written down --

• a group of organisms who are all members of the same species

• a group of organisms who are all members of different species

• a group of organisms who are all members of the same species plus abiotic factors

• a group of organisms who are all members of different species plus abiotic factors

In a city park, a group of birds eat seeds from a tree. Some seeds drop to the ground and are eaten by squirrels. These seeds can be spread by both the birds and the squirrels, which cause new trees to grow. The organisms described in this park are an example of a(n) --

• population

• community

• ecosystem

• biosphere

Tags

NGSS.MS-LS2-2

Students take a field trip to a nature preserve. While they are there, they make observations about all of the things see. When they return to the classroom, their teacher instructs them to make a list of all organisms they saw that belong to the same community. The table shows several student responses. Which student made a list of a community?

• Student 1

• Student 2

• Student 3

• Student 4

Which level of biological organization is the correct classification for a flower?

• tissue

• organ

• organ system

• organism

In order to perform the process of photosynthesis, plants need several molecules, including water. Plants absorb water through their roots. This water is then transported through the xylem to the chloroplasts in the leaves, where it is used to make glucose. Any excess water held by the plants is lost from the stomata in a process known as transpiration. The roots and leaves would be placed into which level of organization?

• cell

• tissue

• organ

• organ system

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A dog walks around a neighborhood marking different objects with urine to mark its territory. The smell will alert other animals that a dog is in the area and may defend the area against unknown animals. The territorial display is an example of what type of relationship?

• Predation

• Mutualism

• Competition

• Commensalism

Tags

NGSS.MS-LS1-4

Barnacles attach themselves to the skin of whales. The whales are so large compared to the barnacles that they are seemingly unaffected by the barnacles attached to them. When the whale enters an area of the ocean that is abundant in the food that barnacles eat, the barnacles will release themselves from the whale.

What type of relationship exists between whales and barnacles?

(a)  

Bubble net feeding is unique to humpback whales. A pod of whales swims below a school of fish, such as herring, and blows bubbles under the fish, continuously encompassing the fish in an increasingly smaller circle. Eventually, the whales lunge toward the surface of the water, gulping huge amounts of both water and fish in their mouths. They force the water out of their mouths and ingest only fish.

The type of feeding relationship between whales and herrings is —

(a)  

Tags

NGSS.MS-LS2-2