Question 1

Which process in the plant life cycle is responsible for producing haploid spores from a diploid sporophyte, and what is the ploidy of the resulting spores?

Accepted Answer

Meiosis; haploid (n)

Question 2

In seed plants, the male gametophyte develops from which structure, and what are the two cells it contains after mitosis?

Accepted Answer

Microspore; generative cell and tube cell

Question 3

Which of the following best describes double fertilization in angiosperms?

Accepted Answer

One sperm fertilizes the egg, and another sperm fertilizes the central cell to form endosperm

Question 4

Which tissue in a mature seed is triploid (3n) and serves as a nutritional source for the developing embryo in angiosperms?

Accepted Answer

Endosperm

Question 5

A botanist observes a plant with seeds that are dispersed by floating on water. Which adaptation is most likely present in these seeds?

Accepted Answer

A lightweight, fibrous outer layer that resists water

Question 6

Which of the following is a correct sequence of events during the germination of a seed?

Accepted Answer

Imbibition, rupture of seed coat, emergence of radicle, emergence of shoot

Question 7

Which structure in the root is responsible for the initiation of lateral roots?

Accepted Answer

Pericycle

Question 8

A plant biologist is studying a cross section of a dicot root. Which arrangement of tissues would they expect to find from the outside inward?

Accepted Answer

Epidermis, cortex, endodermis, pericycle, vascular tissue

Question 9

Which of the following best explains why seed plants are less dependent on water for fertilization compared to mosses and ferns?

Accepted Answer

Seed plants use pollen grains for sperm transfer, which can be transported by wind or animals

Question 10

Which of the following is a function of the cork cambium in woody plants?

Accepted Answer

Production of cork cells that prevent water loss and protect the stem

Question 11

A mutation prevents the formation of the shoot apical meristem (SAM) in a developing plant embryo. Which structure will most likely fail to develop?

Accepted Answer

Epicotyl

Question 12

Which of the following best describes the difference between homospory and heterospory in plants?

Accepted Answer

Homospory produces one type of spore, while heterospory produces two types: megaspores and microspores

Question 13

Which of the following is a real-world example of a modified root, and what is its function?

Accepted Answer

Prop roots in corn; provide structural support

Question 14

Which process is responsible for the elongation of plant cells in the zone of elongation, and what is the main driving force?

Accepted Answer

Uptake of solutes and water, generating turgor pressure

Question 15

Which of the following best describes the fate of the surviving megaspore in the ovule of a flowering plant?

Accepted Answer

It undergoes mitosis to form the female gametophyte (embryo sac)

Question 16

Which of the following is a correct pairing of a fruit type and its developmental origin?

Accepted Answer

Aggregate fruit; develops from multiple carpels of one flower

Question 17

A plant with a taproot system is most likely to have which of the following characteristics?

Accepted Answer

A single, large primary root with smaller lateral roots

Question 18

Which of the following best explains why seed dormancy is an adaptive advantage for plants?

Accepted Answer

It allows seeds to delay germination until environmental conditions are favorable

Question 19

Which of the following is a function of trichomes on leaves?

Accepted Answer

Reducing water loss and deterring herbivores

Question 20

Which of the following best describes the role of the pericycle in root development?

Accepted Answer

It gives rise to lateral roots through cell division

Plant Reproduction and Development: From Gametogenesis to Seed Germination

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