If you take a time machine back to the Carboniferous period, which of the follow
ID: 85630 • Letter: I
Question
If you take a time machine back to the Carboniferous period, which of the following could would you most likely encounter? A. creeping mats of low-growing bryophytes B. fields of tall grasses swaying in the wind C. swampy forests dominated by tree lycophytes, horsetails, and ferns D. huge forests of naked-seed trees filling the air with pollen Which of the following groups is most likely the closest relative of seed plants? A. charophytes B. hornworts C. monilophytes D. mosses Many conifers have needlelike leaves, with the adaptive advantage of: A. increased surface area, increasing photosynthesis B. increased surface area, increasing gas exchange C decreased surface area, reducing gas exchange D. decreased surface area, reducing water lossExplanation / Answer
30)
Early Carboniferous era was dominated by Sphenophyllales (scrambling plants),Lycopodiales (club mosses), Lepidodendrales (scale trees), filicales (ferns), Equisetales (horsetails).
Tall grasses, Bryophytes, and huge trees which are stated in options, a,b, and d emerged at a later stage, which is not relevant to carboniferous period.
Hence, right option is (c)
31)
Horse tails and ferns are close relatives of seed plants.Monilophytes are horse tails, ferns, eusporangiata, and leptosporangiate ferns.
Hornworts, charophytes, and mosses doesn't belong to monilophytes.
As per the given options, choice (c), is the rigtht answer.
32)
Conifers are more primitive than flowering broad-leafed trees.
These trees have a thick and waxy coating that retains more water than a regular leaf. They capture more sunlight, and so incresed photosynthesis.
Hence, option a) is right choice.