Antherozoids and Archegonium

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.

Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.

Q.

Flagellated male gametes are present in all three of which one of the following sets?

1. Riccia, Dryopteris and Cycas

2. Zygnema, Saprolegnia and Hydrilla

3. Fucus, Marsilea and Calotropis

4. Anthoceros, Funaria and Spirogyra

Q. Choose the incorrect statement from the following regarding bryophytes:

1. Liverworts have male and female sex organs on the same thallus
2. Gemmae cups, protonema and archegonium are haploid
3. Spore mother cells and zygote are diploid
4. The male and female sex organs are mostly on the same thallus in mosses

Q. In pteridophytes sporangia are subtended by leaf like appendages called:

1. Cataphylls
2. Sporophylls
3. Microphylls
4. Megaphylls

Q.

What is a strobili in gymnosperms ?

Q. The antherozoids are produced from the antheridium by

1. mitosis
2. meiosis
3. binary fission
4. fragmentation

Q. Antheridium and archegonium produce X and Y. Identify X and Y.

1. X-non-motile antherozoids, Y-egg
2. X-biflagellate antherozoids, Y-egg
3. X-biflagellate antherozoids, Y-non-motile antherozoids
4. X-non-motile antherozoids, Y-biflagellate antherozoids

Q. The egg is present in the

1. neck
2. jacket
3. venter
4. stalk

Q. Bryophytes can be separated from algae in that they

1. are thalloid forms
2. are non-vascular
3. reproduce sexually
4. have archegonia

Q.

Which of the following features distinguish bryophytes from algae?

1. Having thalloid gametophyte.

2. Having sterile jackets in sex organs.

3. Forming an embryo during development.

4. Having conducting tissues.

1. 2 and 3.

2. 3 and 4.

3. 1 and 4.

4. 1 and 2.

Q. Sometimes prothallus of a fern gives rise to a fern plant without fertilization; it is an example of:

1. Parthenocarpy
2. Parthenogenesis
3. Apospory
4. Apogamy

Q. Name three groups of plants that bear archegonia. Briefy describe the life cycle of any one of them.

Q.

What generation in the life cycle of a fern lacks vascular tissue?

Q. The evidence of aquatic origin of bryophytes is:

1. Flagellated antherozoids
2. Green colour
3. Aquatic habitat
4. Thread-like Protonema

Q.

Give any three reasons why bryophytes are unable to reach great heights.

Q.

Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one of them.

Q.

Stalked sex organs are found in

1. Sphagnum

2. Pteris

3. Kelps

4. Cycas

Q. A dominant gametophytic phase alternated by multicellular dependent sporophytic phase is represented by

1. Chlamydomonas
2. Polytrichum
3. Adiantum
4. All of the above

Q.

In Tippo's classification the plants in which embryo is formed but in which true vascular tissues are absent were placed in :

(1)	Bryophyta
(2)	Filicineae
(3)	Gymnospermae
(4)	Angiospermae

Q. Bryophytes can be separated from algae in that they

1. are thalloid forms
2. are non-vascular
3. have archegonia
4. reproduce sexually

Q. The evidence of aquatic origin of bryophytes is:

1. Flagellated antherozoids
2. Green colour
3. Thread-like Protonema
4. Aquatic habitat

Q. The ratio between the number of meiotic division required for the formation of 800 male gametes and 100 female gametes from their respective spore mother cells is:-

1. 100 : 100
2. 200 : 100
3. 100 : 50
4. 200 : 50

Q. In the life cycle of which class of algae, flagellated cells are not formed?

1. Chlorophyceae
2. Phaeophyceae
3. Rhodophyceae
4. Both (b) and (c)

Q. Assertion :Pinus displays the alternation of generations Reason: The gametophyte is dependent upon the diploid sporophyte phase

1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. If the assertion is true but the reason is false
4. If both the assertion and reason are false

Q. Which one of the following is not found in Selaginella?

1. Heterospory
2. Heterophylly
3. Homospory
4. Ligulate leaf

Q. In Bryophytes

1. All the cells are of vegetative structure, but with few exceptions, which are fertile and produce gametes.
2. There is a presence of an outer layer of sterile protective cells around sexual organs.
3. Female sex organs are absent.
4. Fruits are always formed.

Q. The egg is present in the

1. venter
2. neck
3. jacket
4. stalk

Q. Leafy gametophyte is formed from protonema in

1. Marchantia
2. Riccia
3. Funaria
4. Anthoceros

Q. In which of the following groups would you place a plant, which produces spores, has vascular tissues and lacks flowers and seeds?

1. Bryophytes
2. Pteridophytes
3. Gymnosperms
4. Algae