Reproduction in Pteridophytes

Q.

In which of the following gametophytes is not independent free living?

1. Pteris

2. Marchantia

3. Pinus

4. Funaria

Q.

How are the male and female gametophytes of pteridophytes and gymnosperms different from each other?

Q.

In which one of the following male and female gametophytes do not have a free-living independent existence?

1. Polytrichum

2. Funaria

3. Pteris

4. Cedrus

Q.

How do pteridophytes reproduce sexually?

Q. The type of life-cycle in which there is no free-living sporophyte and the dominant, photosynthetic phase in such plants is the free-living gametophyte. We are talking about

Q. Strobili or cones are not found in:

1. Equisetum
2. Selaginella
3. Pinus
4. Marchantia

Q.

The diploid sporophyte is represented by a dominant, independent, photosynthetic, vascular plant body. It alternates with multicellular, saprophytic/autotrophic, independent but short-lived haploid gametophyte. This type of pattern is exhibited by

1. Pteridophytes $\left(\text{Selaginella and Lycopodium}\right)$

2. Bryophytes $\left(\text{Sphagnum and Polytrichum}\right)$

3. Seed plants $\left(\text{Gymnosperms and Angiosperms}\right)$

4. Most of the algal genera $\left(\text{Fucus, Chara and Polysiphonia}\right)$

Q.

What is self incompatibility in gametophyte and sporophyte ?

Q.

What is prothallus?

Q. The plant parts which are haploid and present inside diploid part are:
(a) Embryo within the seed
(b) Pollen grains within the pollen sac
(c) Seed inside the fruit
(d) Female gametophyte within the ovule
(e) Male gametes within the pollen grains

1. (a), (d) and (e)
2. (b) and (c)
3. (b) and (d)
4. (c), (d) and (e)

Q.

Why are Pteridophytes called vascular plants?

Q. Which of the following statements is correct?

1. Pteridophytes have both microphylls and macrophylls
2. Sporophylls form compact structures called strobili
3. Sporangia are present on sporophytes
4. Sporangia produce spores by mitosis in spore mother cells

Q.

A well-developed archegonium with a neck consisting of 4-6 rows of neck canal cells, characterizes

1. pteridophytes and gymnosperms

2. gymnosperms and flowering plants

3. bryophytes and pteridophytes

4. gymnosperms only

Q.

Spores on germination form ______ in pteridophyta

Q. In gymnosperms, ovules are borne on

Q.

Which generation in Ferns is the dominant generation and why?

Q.

What is an example of a sporophyte?

Q. In Selaginella, microspores germinate to form

1. sporophyte
2. male gametophyte
3. female gametophyte
4. protonema

Q. Match the pairs.

1. Dominant sporophyte
2. Same spores
3. Larger female gamete
4. Different spores

Q. Ovule is known as:

1. Female gametophyte
2. Embryo sac
3. Male gametophyte
4. Megasporangium

Q. Spores in pteridophytes are produced in special structures called

1. sporangia
2. archegonia
3. antheridia
4. gametangia

Q. Ancestors of seed-bearing plants exhibit

1. vascular bundles
2. seed habit
3. heterospory
4. heterotrichous

Q.

Where are antheridia and archegonia located in ferns?

Q. Spores of Funaria represent _______.

1. Sexual propagules
2. Gametes
3. Beginning of gametophyte generation
4. Beginning of sporophyte generation

Q.

How far does Selaginella one of the few living members of Lycopodiales (pteridophytes) fall short of seed habit?

Q. The plant parts which are haploid and present inside diploid part are:
(a) Embryo within the seed
(b) Pollen grains within the pollen sac
(c) Seed inside the fruit
(d) Female gametophyte within the ovule
(e) Male gametes within the pollen grains

1. (a), (d) and (e)
2. (b) and (c)
3. (b) and (d)
4. (c), (d) and (e)

Q. The reason why the bryophytes remain small whereas pteridophytes can grow to great heights is because in pteridophytes:

1. Photosynthesis occurs vigorously
2. True xylem and phloem are developed
3. Spores get discharged by the hygroscopic annulus
4. Numerous rhizoids are found

Q.

In Citrus and Opuntia, the agamospermy is due to

(A) Diploid egg cell

(B) Diploid sporophytic cell

(C) Haploid egg cell

(D) Haploid female gamete

Q. Select the correct option regarding the ploidy level of different structures of an angiospermous ovule.

1. Nucellus = 2n, MMC = 2n, Functional megaspore = 2n, Funicle = 2n.
2. Nucellus = n, MMC = 2n, Functional megaspore = 2n, Funicle = n.
3. Nucellus = n, MMC = 2n, Functional megaspore = n, Funicle = n.
   
4. Nucellus = 2n, MMC = 2n, Functional megaspore = n, Funicle = 2n

Q. State whether the following statements are true or false.
In pteridophytes, the gametophyte is dominant, while sporophyte is a dependent generation.

1. True
2. False