Evolution of Lignified Cell Walls Contributed to the Increased Abilities

question 188

Multiple Choice

Evolution of lignified cell walls contributed to the increased abilities of plants to

• A) disperse spores, grow tall, and compete for sunlight.
• B) transport water, collect sunlight when shaded, and make spores.
• C) make tracheids, stay buoyant in water, and disperse spores.
• D) compete for sunlight, maintain a large gametophyte on land, and branch.
• E) transport water, form branched gametophytes, and carry out photosynthesis.

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Definitions:

Morphological Homoplasy

The occurrence of similar body structures in different species not due to common ancestry, often resulting from convergent evolution.

Nucleotide Bases

The building blocks of DNA and RNA, consisting of adenine, thymine (uracil in RNA), cytosine, and guanine.

Obligate Symbionts

Organisms that require a symbiotic relationship with another organism to survive.

Pseudogenes

Sequences of DNA that resemble genes but are non-functional due to mutations, deletions, or insertions.