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
B) Equisitum
C) Sphagnum
D) Adiantum
E) Psilotum
F) Gnetum
Important Questions on Plant Kingdom
Reason (R): In Spirogyra, non flagellated gametes will fuse to form zygote.
The correct option among the following is:
(A) Elaters
(B) Indusium
(C) Agar
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:
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 |
Match the following lists:
| List- | List- | ||
| A. | Protonema | Useful in spore dispersal | |
| B. | Circinate venation | Coiling of young leaves in Pteridophytes | |
| C. | Elaters | Storage food in Rhodophyceae | |
| D. | Floridean starch | Juvenile stage of Bryophytes | |
| Naked ovules |
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
