Lichens
- 1.
Lichens are assigned to a taxonomic group
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Lichens are NOT assigned to a taxonomic group because two different organisms are involvedRate this question:
-
- 2.
Lichens are a relationship between an "algae" and a "fungus". The "algae" is usually a green algae or cyanobacteria
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Lichens are indeed a symbiotic relationship between an "algae" and a "fungus". The "algae" component is typically a green algae or cyanobacteria. This mutualistic partnership allows the fungus to provide a protected environment and nutrients for the algae, while the algae photosynthesize and provide food for the fungus. Therefore, the statement "Lichens are a relationship between an 'algae' and a 'fungus'. The 'algae' is usually a green algae or cyanobacteria" is true.Rate this question:
-
- 3.
The algae provides ______?
- A.
Food
- B.
Water
- C.
Protection
Correct Answer
A. FoodExplanation
Through photosynthesisRate this question:
-
- 4.
Fungus provides ______ ?
- A.
Food
- B.
Water
- C.
Protection
Correct Answer
C. ProtectionExplanation
Provides protection from harmful light intensities and absorbs nutrients and water
Fungus is usually from the Phylum AscomycotaRate this question:
-
- 5.
Identification is usually based on the _____?
- A.
Fungus
- B.
Algae
Correct Answer
A. FungusExplanation
Identification is usually based on the fungus. This suggests that when it comes to identifying something, such as a species or a sample, the presence or characteristics of a fungus are often used as key indicators. Fungi have distinct features and can be easily observed and analyzed, making them a reliable basis for identification purposes. Algae, on the other hand, may also be used for identification in certain cases, but the question implies that fungus is the more commonly relied upon factor.Rate this question:
-
- 6.
Lichens are not sensitive to sulfur dioxide
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
They are very sensitiveRate this question:
-
- 7.
The "algae" and the fungi are associated together in what is called a spongy thallus
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because algae and fungi are often found together in a symbiotic relationship known as a spongy thallus. In this relationship, the algae provide food through photosynthesis, while the fungi provide a protective structure and absorb nutrients from the environment. This association allows both organisms to benefit and thrive in their respective habitats.Rate this question:
-
- 8.
Crustose lichens....
- A.
Look like miniature shrubs and are usually branched
- B.
Attached to or embedded in the substrate over the entire lower surface
- C.
They often form brightly colored patches on bare rocks and tree bark
- D.
Weakly attached to the substrate
- E.
The thalli are somewhat leaflike
- F.
Attached to the substrate at one point
Correct Answer(s)
B. Attached to or embedded in the substrate over the entire lower surface
C. They often form brightly colored patches on bare rocks and tree barkExplanation
Crustose lichens are attached to or embedded in the substrate over the entire lower surface. This means that they are firmly attached to the surface they grow on and cannot be easily detached. They often form brightly colored patches on bare rocks and tree bark, which is a characteristic feature of crustose lichens. This attachment allows them to withstand harsh environmental conditions and provides them with a stable base for growth. Additionally, the fact that they are weakly attached to the substrate suggests that they are not firmly rooted and can be easily detached.Rate this question:
-
- 9.
Foliose lichens...
- A.
Weakly attached to the substrate
- B.
Attached to in the substrate over the entire lower surface
- C.
Looks like miniature shrubs and are usually branched
- D.
The thalli are somewhat leaflike
- E.
Form brightly colored patches on bare rocks and tree bark
- F.
Attached to the substrate at one point
Correct Answer(s)
A. Weakly attached to the substrate
D. The thalli are somewhat leaflikeExplanation
Foliose lichens are weakly attached to the substrate and have thalli that are somewhat leaflike in appearance. This means that they are not firmly attached to the surface they grow on and can be easily detached. The thalli, or the leaf-like structures of the lichens, have a similar appearance to leaves, with a flat and lobed shape. This combination of weak attachment and leaf-like thalli helps to distinguish foliose lichens from other types of lichens.Rate this question:
-
- 10.
Fruitcose lichens...
- A.
Attached in the substrate over the entire lower surface
- B.
Often form brightly colored patches on bare rocks and tree bark
- C.
The thalli are somewhat leaflike
- D.
Weakly attached to the substrate
- E.
Looks like miniature shrubs and are usually branched
- F.
Attached to the substrate at one point
Correct Answer(s)
E. Looks like miniature shrubs and are usually branched
F. Attached to the substrate at one pointExplanation
The correct answer states that fruitcose lichens look like miniature shrubs and are usually branched. Additionally, they are attached to the substrate at one point. This means that the lichens have a shrub-like appearance with branches, and they are connected to the substrate at a single point.Rate this question:
-
- 11.
Which lichen is used by model railroad builders and is usually fed on by Caribou and Reindeer
- A.
Crustose
- B.
Foliose
- C.
Fruticose
Correct Answer
C. FruticoseExplanation
Fruticose lichen is used by model railroad builders and is usually fed on by Caribou and Reindeer.Rate this question:
-
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Apr 18, 2011Quiz Created by
Mpridemore14
Back to top