241. Multicellular branched rhizoids and
leafy gametophytes are characteristic of
(1) all pteridophytes
(2) all bryophytes
(3) some peteriodphytes
(4) some bryophytes
242. An alga very rich in protein is
(1) Oscillatoria
(2) Spirogyra
(3) Chlorella
(4) Ulothrix
243. Blue-green algae belong to
(1) Rhodophyceae
(2) Eukaryotes
(3) Chlorophyceae
(4) Prokaryotes
244. Which one of the following is a
living fossil?
(1) Ginkgo
(2) Pinus
(3) Thuja
(4) Opuntia
245. Seed-habit first originated in
(1) certain monocots
(2) certain ferns
(3) primitive dicots
(4) certain pines
246. Ulothrix can be described as a
(1) membranous alga producing zoospores
(2) non-motile colonial alga lacking
zoospores
(3) filamentous alga with flagellated reproductive stages
(4) filamentous alga lacking flagellated
reproductive stages
247. Which one of the following
statements about Cycas is incorrect?
(1) Its xylem is mainly composed of xylem vessels
(2) It does not have a well-organized
female flower
(3) Its roots contain some blue-green
algae.
(4) It has circinate vernation
248. Brown algae is characterised by the
presence of
(1) fucoxanthin
(2) phycocyanin
(3) haematochrome
(4) phycoerythrin
249. Bryophytes can be separated from
algae because they
(1) possess archegonia with outer layer of sterile cells
(2) are thalloid forms
(3) contain chloroplasts in their cells
(4) have no conducting tissue
250. Ulothrix filaments produce
(1) heterogametes
(2) isogametes
(3) basidiospores
(4) anisogametes
251. Bryophytes comprise
(1) dominant phase of gametophyte which
produces spores
(2) sporophyte of longer duration
(3) small sporophyte phase and generally parasitic on gametophyte.
(4) dominant phase of sporophyte which
is parasitic
252. The antherozoids of Funaria are
(1) multiciliated
(2) aciliated
(3) monociliated
(4) flagellated
253. Largest sperms in the plant world
are found in
(1) Cycas
(2) Pinus
(3) Thuja
(4) Banyan
254. The “walking” fern is so named
because
(1) it knows how to walk by itself
(2) it is dispersed through the agency
of walking animals
(3) its spores are able to walk
(4) it propagates vegetatively by its leaf tips
255. Bryophytes are dependent on water
because
(1) the sperms can easily reach upto egg in the archegonium
(2) water is essential for fertilization
for their homosporous nature
(3) archegonium has to remain filled
with water for fertilization
(4) water is essential for their
vegetative propagation
256. The largest ovules, largest male
and female gametes and largest plants are found among
(1) Gymnosperms
(2) Angiosperms
(3) Dicotyledonous plants
(4) Tree ferns and some monocots
257. Dichotomous branching is found in
(1) Liverworts
(2) Fern
(3) Marchantia
(4) Funaria
258. Columella is a specialised
structure found in the sporangium of
(1) Spirogyra
(2) Ulothrix
(3) None of these
(4) Rhizopus
259. Which of the following is true
about bryophytes?
(1) They are thalloid
(2) They possess archegonia
(3) All of these
(4) They contain chloroplast
260. In which of the following would you
place the plants having vascular tissue lacking seeds?
(1) Pteridophytes
(2) Algae
(3) Gymnosperms
(4) Bryophytes