Pick the correct group consisting of all genera exhibiting homospory.
(1) Lycopodium, Psilotum, Selaginella, Equisetum
(2) Equisetum, Pteris, Salvinia, Psilotum
(3) Salvinia, Pteris, Lycopodium, Selaginella
(4) Equisetum, Psilotum, Lycopodium, Pteris
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe spreading of living pteridophyte is limited and is restricted to narrow geographical region because of
1. Growth requirements of gametophyte (cool, damp and shady places).
2. Requirement of water for fertilisation.
3. Absence of stomata in leaf and absence of vascular tissue.
4. Both 1. and 2..
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe given diagram shows:
(1) An alga that lacks flagellated cells
(2) A liverwort
(3) A heterosporous pteridophyte
(4) A gymnosperm with non motile sperms
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA Prothallus is
1. A structure in pteridophytes formed before the thallus develops
2. A sporophytic free living structure formed in pteridophytes
3. A gametophyte free living structure formed in pteridophytes
4. A primitive structure formed after fertilization in pteridophytes
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFrom an evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in:
1. | Gymnosperms | 2. | Liverworts |
3. | Mosses | 4. | Pteridophytes |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA feature common in gametophyte of both mosses and maximum ferns is-
1. Independent existence
2. Both are monoecious in nature
3. Presence of vascular tissue
4. Both are filamentous
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDevelopment of the zygotes into young embryo takes within the female gametophytes in
1. Adiantum.
2. Selaginella.
3. Riccia.
4. Batrachospermum.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn which of the following plants, strobili are not formed?
(1) Equisetum
(2) Cycas
(3) Dryopteris
(4) Pinus
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGametophyte in the pteridophytes is
(i) Small, inconspicuous.
(ii) Long-lived, unicellular.
(iii) Mostly photosynthetic thalloid or saprophytic.
(iv) Short lived, haploid.
How many statements are correct with respect to gametophyte?
1. Two
2. Three
3. Four
4. One
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn pteridophytes, antheridium are present in :-
1. Leafy gametophyte
2. Prothallus
3. Sporophyll
4. Protonema
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology