Assertion (A): In evolution, the distribution of Bryophytes and Pteridophytes, was limited.
Reason (R) : The need for water for the transportation of male gametes and fertilization limited their distribution.
The correct option among the following is:
Important Questions on Plant Kingdom
| List- | List- | ||
| (A) | Siphonostele | (I) | Dissected siphonostele with overlapping leaf gaps |
| (B) | Solenostele | (II) | Siphonostele with scattered leaf gaps |
| (C) | Dictyostele | (III) | Central core of xylem surrounded by phloem |
| (D) | Protostele | (IV) | Medullated protostele |
The correct match is:
Assertion In pteridophytes, the gametophytes require cool, damp, shady places to grow.
Reason Specific requirement and the need for water for fertilization, the spread of living pteridophytes is limited and restricted to narrow geographical regions.
The correct answer is:
Pteriodophytes, especially ferns possess the following characteristics
i) Circinate vernation
ii) Ramenta
iii) Eustele
iv) Paraphysis
The correct combination is
Arrange the following plants with their respective classes in the same order. Sphenopsida, Psilopsida, Pteropsida, Lycopsida, Gnetopsida
A) Selaginella
B) Equisitum
C) Sphagnum
D) Adiantum
E) Psilotum
F) Gnetum
Assertion (A): The development of zygote into young embryo with in female gametophyte indicates the precursor for the seed habit.
Reason (R) : In pteridophytes, the gametophyte requires cool, damp, shady place to grow.
The correct option among the following is:
Match the following lists.
| List I | List II |
| A) Submerged rooted hydrophyte | I) Hydrilla |
| B) Rooted hydrophyte with floating leaves | II) Salvinia |
| C) Free floating hydrophyte | III) Victoria regia |
| D) Submerged suspended hydrophyte | IV) Limnophila |
| V) Vallisneria |
The correct match is:
A) The female sex organs of Angiosperms are called strobilus.
B) The fusion of motile male gamete with non-motile egg is called zooidogamy.
C) Some algae are in association with animals.
D) Archegonium is flank shaped male sex organ with single cell.
Based on the following characteristics of life cycles identify and arrange the plants respectively.
| A) Haplontic | i) Laminaria |
| B) Diplo-haplontic | ii) Volvox |
| C) Haplo-diplontic | iii) Polysiphonia |
| D) Diplobiontic | iv) Salvinia |
| E) Diplontic | v) Fucus |
