Question 1

Which process in the plant life cycle is responsible for producing haploid spores, 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 produced 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 the seed is triploid (3n) and serves as a nutritional source for the developing embryo in angiosperms?

Accepted Answer

Endosperm

Question 5

What is the main evolutionary advantage of seed dormancy in plants?

Accepted Answer

It allows seeds to germinate only when environmental conditions are favorable

Question 6

Which of the following is a correct sequence of events during the development of a female gametophyte (embryo sac) in angiosperms?

Accepted Answer

Megasporocyte undergoes meiosis → four megaspores form → one survives → mitosis produces embryo sac

Question 7

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 8

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

Accepted Answer

Pericycle

Question 9

A botanist observes a plant with secondary growth, including the formation of wood and bark. Which meristems are responsible for this growth?

Accepted Answer

Vascular cambium and cork cambium

Question 10

Which of the following is a real-world example of seed dispersal by water?

Accepted Answer

Coconut seeds floating to new islands

Question 11

Which process is responsible for the increase in length of roots and shoots in plants?

Accepted Answer

Primary growth at apical meristems

Question 12

Which of the following best describes the function of trichomes on leaves?

Accepted Answer

They reduce water loss and deter herbivores

Question 13

In the haplodiplontic life cycle, which process restores the diploid state?

Accepted Answer

Fertilization

Question 14

Which of the following is a correct match between a modified plant organ and its function?

Accepted Answer

Prop roots – support

Question 15

Which tissue type is responsible for the transport of water and minerals from roots to shoots?

Accepted Answer

Xylem

Question 16

A plant biologist is studying a cross section of a dicot root. Which arrangement of tissues would they expect to find in the vascular cylinder?

Accepted Answer

Primary xylem at the center, surrounded by primary phloem and pericycle

Question 17

Which of the following best explains why the gametophyte stage is reduced and short-lived in seed plants?

Accepted Answer

The gametophyte is protected within sporophyte tissues, reducing its exposure to environmental stress

Question 18

Which of the following is a real-world example of animal-mediated pollination?

Accepted Answer

A bat visiting a cactus flower at night

Question 19

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

Accepted Answer

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

Plant Reproduction and Development: Sporogenesis, Gametogenesis, and Plant Structure

Study Guide - Practice Questions