Question Detail

BOT 102 BOT 102 Review Objective Question
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Question

Which of the following best describes the general morphological features of a typical liverwort like Marchantia?
Options
A A small, leafy, upright stem-like axis with spirally arranged leaf-like structures, anchored by multicellular rhizoids.
B A flattened, dichotomously-branching, ribbon-like thallus prostrate on the substrate, anchored by unicellular rhizoids.
Correct Answer
C A simple, flat, lobed thallus with a long, horn-shaped sporophyte that grows continuously from a basal meristem.
D A dominant sporophyte generation forming true roots, stems, and leaves, reproducing by spores from sori.
Correct Answer

Option B is the correct answer.

Detailed Explanation

According to section 3.2.3, Marchantia (a liverwort) has a flattened, dichotomously-branching, ribbon-like thallus that lies prostrate on the substrate, attached by unicellular rhizoids on the ventral (lower) surface. Option A describes a typical moss, option C describes a hornwort, and option D describes a fern (pteridophyte).

Hint

Recall the distinct thallus structure mentioned for liverworts, in contrast to mosses or hornworts.

Question Info

Course: BOT 102
Topic: BOT 102 Review
Type: Objective
Difficulty: Not specified
Question 361 of 769
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