Question 1

What does the 'dominant generation' in a plant's life cycle refer to?

Accepted Answer

The generation that occupies the largest portion of the life cycle.

Question 2

In BRYOPHYTES, which generation is dominant?

Accepted Answer

Gametophyte generation

Question 3

Which types of plants have a dominant sporophyte generation?

Accepted Answer

Pteridophytes, Gymnosperms, and Angiosperms

Question 4

What is an advantage of having a dominant sporophyte generation?

Accepted Answer

Fertilization and dispersal can be timed with environmental conditions.

Question 5

What do pollen grains in seed-bearing plants contain when mature?

Accepted Answer

Male gametophytes

Question 6

BRYOPHYTES are described as the most primitive land plants. What is a key environmental requirement for their life cycle?

Accepted Answer

Moist and shady environments

Question 7

What is a characteristic of most mosses regarding water availability?

Accepted Answer

They can withstand long periods of drying and spring back to life.

Question 8

Which of the following is NOT a type of bryophyte mentioned in the text?

Accepted Answer

Ferns

Question 9

In the context of plant life cycles, 'gamete' refers to a:

Accepted Answer

Reproductive cell

Question 10

What process is involved in the formation of spores from diploid cells in plants?

Accepted Answer

Meiosis

Question 11

The 'capsule' in bryophytes is also known as a:

Accepted Answer

Sporangium

Question 12

Bryophytes are dependent on water to complete their life cycle. This dependence is primarily for:

Accepted Answer

Reproduction (fertilization)

Question 13

What are 'rhizoids' in bryophytes?

Accepted Answer

Structures for anchorage

Question 14

The stage that follows fertilization in a plant life cycle is the:

Accepted Answer

Zygote

Question 15

Vascular plants include which of the following groups?

Accepted Answer

Pteridophytes, Gymnosperms, and Angiosperms

Question 16

The term 'thallus' is mentioned in relation to the gametophyte of some plants. What does it typically describe?

Accepted Answer

A simple, undifferentiated plant body

Question 17

Which of the following is a process that occurs during the development of a gametophyte from a spore?

Accepted Answer

Mitosis

Question 18

What is the primary function of the sporophyte generation in vascular plants?

Accepted Answer

To produce spores

Question 19

The male gametophyte develops from a:

Accepted Answer

Spore

Question 20

The text states that bryophytes 'do not have' true roots, stems, or leaves. This indicates they are:

Accepted Answer

Non-vascular plants

Plant Life Cycles and Dominant Generations

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