Life Cycle of Pteridophytes

Q. Which event is considered as a precursor to seed habit?

1. Retention of male gametophyte on parent sporophyte
2. Retention of female sporophyte on parent gametophyte
3. Retention of female gametophyte on parent sporophyte
4. Retention of male sporophyte on parent gametophyte

Q. Haplo-diplontic life cycle is seen in

1. bryophytes, pteridophytes and kelps
2. bryophytes only
3. pteridophytes only
4. bryophytes and pteridophytes only

Q. The correct description of sporophyte of Marchantia and gametophyte of a fern is:

1. Both lack vascular tissues
2. Both are free living structures
3. The sporophyte of Marchantia is diploid while the gametophyte of fern is haploid
4. Both represent the dominant generation in their respective life cycles

Q.

When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?

Q.

What are the features of seed-bearing plants?

Q. Pteridophytes differ from bryophytes in having:

1. Gametophyte dependent on sporophyte
2. Absence of sporophyte
3. Sporophyte dependent on gametophyte
4. Independent gametophyte and sporophyte

Q.

What is the function of the sporophyte?

Q.

With the help of a schematic diagram describe the haplo diptontic life cycle pattern of a plant group.

Q.

The heterosporous pteridophyte show certain characteristics, which are precursor to the seed habit in gymnosperms. Explain.

Q.

What type of life cycle is shown by bryophytes and pteridophytes?

Q.

What is the predominant stage of the life cycle of a moss?

Q.

Heterospory, i.e., formation of two types of spores --- microspores and megaspores is a characteristic feature in the life cycle of a few members of pteridophytes and all spermatophytes. Do you think heterospory has some evolutionary significance in plant kingdom?

Q.

what is the meaning of the term zooidogamous?

Q.

What are the functions of antheridia and archegonia?

Q.

Which is the main plant body in pteridophytes?

Q.

Are Pteridophytes haplodiplontic?

Q. Pteridophytes exhibit ___________ life cycle.

1. haplontic life cycle with dominant sporophytic phase
2. diplontic life cycle with dominant gametophyte phase
3. haplo-diplontic life cycle with dominant gametophytic phase
4. haplo-diplontic life cycle with dominant sporophytic phase

Q.

Are bryophytes heterosporous?

Q.

Comment on the life cycle and nature of a fern prothallus.

Q. The correct description of sporophyte of Marchantia and gametophyte of a fern is:

1. The sporophyte of Marchantia is diploid while the gametophyte of fern is haploid
2. Both lack vascular tissues
3. Both are free living structures
4. Both represent the dominant generation in their respective life cycles

Q.

Is lycopodium heterosporous?

Q. Statement 1: The main plant body of bryophytes is sporophytic.

1. Both statements 1 and 2 are correct.
2. Statement 1 is correct but statement 2 is incorrect.
3. Statement 1 is incorrect but statement 2 is correct.
4. Both statements 1 and 2 are incorrect.

Q. Which of the following sequences is correct with regard to the life cycle of pteridophytes?

1. Gametophyte, spores, meiosis, sporophyte
2. Sporophyte, meiosis, spores, gametophyte
3. Sporophyte, mitosis, gametes, zygote
4. Gametophyte, meiosis, gametes, zygote

Q. Which one correctly describes reproduction and life cycle of fern?

1. Spore $\to$ Gamete $\to$ Prothallus $\to$ Sporophyte
2. Gamete $\to$ Spore $\to$ Prothallus $\to$ Plant
3. Prothallus $\to$ Sporophyte $\to$ Gamete $\to$ Fern
4. Sporangia $\to$ Spore $\to$ Prothallus $\to$ Sporophyte $\to$ Plant

Q. Assertion :In diplontic life cycle, gametophyte is dominant. Reason: In diplontic life cycle, there is no free living sporophyte.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q.

Which among the following is a prerequisite in Selaginella to exhibit seed habit?

1. Heterophylly

2. Heterospory

3. Microphylly

4. Creeping stem

Q. Gametophyte and sporophyte are free-living in

1. Funaria
2. Pteris
3. Marchantia
4. Polytrichum

Q. Haplo-diplontic life cycle is seen in

1. bryophytes only
2. pteridophytes only
3. bryophytes and pteridophytes only
4. bryophytes, pteridophytes and kelps

Q.

Which among the following statements is false about pteridophytes?

1. Members of pteridophyta are homosporous or heterosporous.

2. The sporophytes of pteridophytes produce the sex organs.

3. Ferns exhibit circinate vernation.

4. Sporophytic generation is dominant in pteridophytes.

Q.

Are ferns sporophyte dominant?