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Origin of seed habit or its foundation w...

Origin of seed habit or its foundation was laid in Selaginella like pteridophytes but seed formation did not occur because of

A

In situ development of female gametophytes

B

Absence of precocious development of microgametophyte

C

Absence of integumented megasporangium

D

Dependence on water for pollination

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In which of the pteridophytes ;origin of seed habit or its foundation was laid down but seed formation did not occur in

Seed habit originated in certain

Origin of seed in land plants occured about

A. Heterospory is found in all members of pteropsida B. Selaginella is advance among pteridophytes as it produces seeds C. Pinus leaves are monomorphic , pinnate compound and have sunken stomata as adaptation transpiration D. Sporic meiosis is characteristic of life cycle in many organisms like Volvox , Chlamydomonas and Ulothrix .

Selaginella has a tendency to form seed, called seed habit because it follows

A : Events precursor to the seed habit is seen in some members of pteridophytes. R : Development of the zyotes into young embryo take place within the female gametophyte.

Which one of the following is considered important in the development of seed habit Or Selaginella has the character of evolutionary importance. That character is

Seed habit, considered an important step in evolution, is present in : 1 Adiantum 2 Selaginella 3 Pteris 4 Lycopodium

Rudimentary seed habit occurs in

Heterospory and origin of seed habit was noticed for the first time in :-

AAKASH INSTITUTE ENGLISH-TEST 5-EXAMPLE
  1. Gymnosperms differ from non-vascular embryophytes in

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  2. Select the wrong statement for gymnosperms

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  3. Origin of seed habit or its foundation was laid in Selaginella like pt...

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  4. Which of the following statement for racemose inflorescence is Incorre...

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  5. The spread of living pteridophytes is limited and is restricted to nar...

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  6. Chosse the incorrect statement for red alage

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  7. A chlorophycean number can be e separated from red alga in

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  8. Which of these may not be an economic importance of bryophytes?

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  9. number of muscles are present in humans.

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  10. Chosse the incorrect option w.r.t. bryophytes

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  11. How many of the given characters are associated with brown algae (Lami...

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  12. If the number of chromosomes in the secondary nucleus of Zea maize is ...

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  13. System of classification proposed by Engler and Pranti

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  14. Branch of taxonomy that uses chemical constiluents of plants to resolv...

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  15. Choose the incorrect statement regarding Bentham and Hooker's system o...

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  16. Artificial system of classification as given by Linnaeus is not accept...

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  17. Plants possessing leafy body without vascular tissue, presence of embr...

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  18. Find the correct option related to secondary metabolite

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  19. number of lobes are present in brain.

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  20. State true or false. Mushroom belongs to plant kingdom.

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