Of the above statements
(a) A and B alone are correct
(b) C alone is correct
(c) B and C alone are correct
(d) C and D alone are correct.- Examine the figure given below and select the correct option
giving all the four parts (A, B, C and D) rightly identified.
A B C D
(a) Archego- Female Gemma Rhizoids
niophore thallus cup
(b) Archego- Female Bud Food
niophore thallus
(c) Seta Sporophyte Protonema Rhizoids
(d) Antherid- Male Globule Roots
iophore thallus
- Selaginella and Salvinia are considered to represent a
significant step toward evolution of seed habit because
(a) female gametophyte is free and gets dispersed like
seeds
(b) female gametophyte lacks archegonia
(c) megaspores possess endosperm and embryo
surrounded by seed coat
(d) embryo develops in female gametophyte which is
retained on parent sporophyte. - Compared with the gametophytes of the bryophytes, the
gametophytes of vascular plants tend to be
(a) smaller but have larger sex organs
(b) larger but have smaller sex organs
(c) larger and have larger sex organs
(d) smaller and have smaller sex organs. - Examine the figures A, B, C and D. In which one of the four
options all the items A, B, C and D are correct?
A B C D
(a) Chara Marchantia Fucus Pinus
(b) Equisetum Ginkgo Selaginella Lycopodium
(c) Selaginella Equisetum Salvinia Ginkgo
(d) Funaria Adiantum Salvinia Riccia- In plants showing diplontic life cycle
(a) sporophytic generation is represented by one-celled
zygote
(b) gametophyte is dominant free living and
photosynthetic
(c) sporophyte is dominant, photosynthetic and
independent
(d) none of these. - Gymnosperms are referred to as “naked seed plants”
because
(a) they lack ovule
(b) they lack ovaries
(c) they lack pollen grains
(d) they lack archegonia. - Coralloid roots associated with N 2 fixing cyanobacteria are
found in
(a) Equisetum
(b) Marchantia
(c) Cycas
(d) Lycopodium. - Haplo-diplontic life cycle is found in
(a) Bryophytes
(b) Pteridophytes
(c) both (a) and (b)
(d) none of these.
True or False - The plant body of mosses, may be thallose or foliose.
- Archegonia are female organs of Bryophytes, Pteridophytes
and Gymnosperms. - In Funaria, the male receptacle is surrounded by rosette of
divergent perichaetial leaves. - In Pteridophytes, sperms are generally bi or multi-
flagellate. - Ferns are grown as ornamental plants for their delicate and
graceful leaves. - Heterospory is pre-requisite to pollination and seed
formation. - A d i s t i n c t o va r y, s t y l e a n d s t i g m a i s a b s e n t i n
Gymnosperms. - In Gymnosperms, phloem is without sieve tubes.
- young leaves of Cycas show circinate ptyxis.
- In Angiosperms the development of endosperm takes place
before fertilisation and hence it is haploid.