Bio iLearn Practice

Quiz
•
Science
•
6th Grade
•
Hard
+10
Standards-aligned
Lisa Thompson
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A musk thistle plant was moved into a new environment. The musk thistles grew very well in their new home. Other plants in the area began to die because the musk thistles were taking all the nutrients from the soil.
A scientist discovered the problem and decided to bring in weevils. Weevils eat musk thistles. The weevils ate the musk thistles and greatly reduced their numbers. Some of the plants native to the area began to grow again.
Which statement from the story describes a feedback mechanism that is keeping a population within certain limits?
The musk thistles grew very well in their new home.
A scientist discovered the problem and decided to bring in weevils.
The weevils ate the musk thistles and greatly reduced their numbers.
Some of the plants native to the area began to grow again.
Tags
NGSS.MS-LS2-1
NGSS.MS-LS2-4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Why do plants conduct photosynthesis?
To make light
To make mitochondria
To make glucose
To release carbon dioxide
Tags
NGSS.MS-LS1-6
NGSS.MS-LS2-3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Choose the correct words or phrases to fit into the blanks to complete the sentence.
Plants use the process of photosynthesis to make _____________ so that they can __________________________.
Sugar, Make food for consumers
Sugar, Grow and reproduce
Solar energy, Dispose of waste
Oxygen, Stay warm
Tags
NGSS.MS-LS1-6
NGSS.MS-LS2-3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Biologists studied the effects of light on the growth of plant seedlings. Five seedlings were exposed to different conditions. The conditions are given in Table 1.
Which conclusion can be made about how light affected the seedlings?
Use the picture below to help.
The tip of the seedling responds to light to maintain homeostasis
The base of the seedling responds to light to maintain homeostasis
The seedling does not need to respond to light to maintain homeostasis.
Both the tip and the base of the seedling respond to light to maintain homeostasis
Tags
NGSS.MS-LS1-5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What are organisms that use other organisms (like producers) for food to gain energy?
decomposers
producers
herbivores
consumers
Tags
NGSS.MS-LS2-3
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
This is something introduced to an ecosystem. It can be positive (make more changes) or negative (make less changes)?
The purpose is to help restore an ecosystem to homeostasis (having all their needs met).
Homeostasis
Feedback mechanism
Tomato
Decomposer
Tags
NGSS.MS-LS2-4
NGSS.MS-LS2-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Invasive species alter the ecosystem when they___________in number quickly, this leads to __________ food for the native species.
increase, less
decline, more
Tags
NGSS.MS-LS2-1
NGSS.MS-LS2-2
NGSS.MS-LS2-4
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