Question 1

Which of the following characteristics is shared by all seedless vascular plants (Pteridophytes)?

Accepted Answer

They possess vascular tissue and a dominant sporophyte generation ($$2N).$$

Question 2

In the life cycle of Psilotophyta (Whisk Ferns), what is the role of the gametophyte?

Accepted Answer

It develops underground and produces gametes for fertilization.

Question 3

Which phylum of seedless vascular plants is known for having microphylls arranged in a tight spiral on a stubby stem and is commonly found in streambeds and floodplains?

Accepted Answer

Isoetophyta (Isoetes – Quillworts)

Question 4

What is the main evolutionary advantage of vascular tissue in plants?

Accepted Answer

It enables efficient absorption and transport of water and minerals.

Question 5

Which of the following best describes the sporophyte generation in Lycopodium (ground pines)?

Accepted Answer

It is diploid and bears spore-producing structures called sporangia.

Question 6

A student observes a plant with jointed, ribbed stems and reduced, scale-like leaves. The plant is used for scouring and sharpening tools. Which phylum does this plant most likely belong to?

Accepted Answer

Equisetophyta (Horsetails & Scouring Rushes)

Question 7

Which statement about the reproduction of Equisetum (horsetails) is correct?

Accepted Answer

Equisetum reproduces both asexually by fragmentation and sexually by spores produced in strobili.

Question 8

Which of the following is NOT a characteristic of microphylls found in Lycopodium?

Accepted Answer

They contain multiple vascular bundles.

Question 9

In the life cycle of seedless vascular plants, which process restores the diploid number ($$2N) $$after gametes fuse?

Accepted Answer

Fertilization

Question 10

Which of the following is a real-world application of horsetails (Equisetum) based on their anatomical features?

Accepted Answer

Their silica-rich stems are used for scouring and sharpening tools.

Question 11

A botanist finds a plant with dichotomously forking stems, no true leaves, and sporangia at the tips of branches. Which phylum does this plant most likely belong to?

Accepted Answer

Psilotophyta (Whisk Ferns)

Question 12

Which of the following equations correctly represents the alternation of generations in seedless vascular plants?

Accepted Answer

$$2N \rightarrow meiosis \rightarrow 1N \rightarrow fertilization \rightarrow 2N$$

Question 13

Which of the following is true about the gametophyte generation in Lycopodium?

Accepted Answer

It is haploid and may be underground and non-photosynthetic or above ground and photosynthetic.

Question 14

What is the function of sporangia in seedless vascular plants?

Accepted Answer

To produce spores by meiosis.

Question 15

Which of the following best explains why water is essential for fertilization in seedless vascular plants?

Accepted Answer

Water allows sperm to swim to the egg for fertilization.

Question 16

Which phylum includes plants commonly called 'club mosses' and is characterized by having microphylls and only one vascular bundle per leaf?

Accepted Answer

Lycophyta

Question 17

A plant is found growing on a forest floor, developing from branching rhizomes, and has microphylls less than 1 cm long. Which genus does this plant most likely belong to?

Accepted Answer

Lycopodium

Question 18

Which of the following is a distinguishing feature of the sporophyte generation in Isoetes (quillworts)?

Accepted Answer

It has microphylls arranged in a tight spiral.

Question 19

Which process occurs in the sporangia of Lycopodium to produce spores?

Accepted Answer

Meiosis

Question 20

Which of the following best describes the evolutionary significance of the dominant sporophyte generation in seedless vascular plants?

Accepted Answer

It enables plants to grow larger and colonize new environments due to vascular tissue.

Seedless Vascular Plants: Ferns and Their Relatives (Pteridophytes)

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