261. Cycas have two cotyledons but not
included in angiosperms because of
(1) Circinate ptyxis
(2) Naked ovules
(3) Compound leaves
(4) Seems like monocot
262. A research student collected
certain alga and found that its cells contained both chlorophyll a and
chlorophyll b as well as phycoerythrin. The alga belongs to
(1) Chlorophyceae
(2) Rhodophyceae
(3) Phaeophyceae
(4) Bacillariophyceae
263. Floridean starch is found in
(1) Myxophyceae
(2) Chlorophyceae
(3) Cyanophyceae
(4) Rhodophyceae
264. One of the most important reasons
why wild plants should thrive is that they are good sources of
(1) genes for resistance to disease and pests
(2) highly nutritive animal feed
(3) very rare and highly sought after
fruits of medical importance
(4) unsaturated edible oils
265. In Ferns meiosis occurs when
(1) spores are formed
(2) spore germinates
(3) antheridia and archegonia are formed
(4) gametes are formed
266. Which one pair of examples will
correctly represent the grouping Spermatophyta according to one of the schemes
of classifying plants?
(1) Pinus, Cycas
(2) Ginkgo, Pisum
(3) Rhizopus, Triticum
(4) Acacia, Sugarcane
267. Which one of the following pairs of
plants are not seed producers?
(1) Funaria and Ficus
(2) Funaria and Pinus
(3) Ficus and Chlamydomonas
(4) Fern and Funaria
268. Sexual reproduction in Spirogyra is
an advanced feature because it shows
(1) same size of motile sex organs
(2) physiologically differentiated sex organs
(3) morphologically different sex organs
(4) different sizes of motile sex organs
269. Which of the following is without
exception in angiosperms?
(1) secondary growth
(2) presence of vessels
(3) autotrophic nutrition
(4) double fertilisation
270. Which of the following plants
produces seeds but not flowers?
(1) Peepal
(2) Maize
(3) Pinus
(4) Mint
271. Peat Moss is used as a packing
material for sending flowers and live plants to distant places because
(1) it serves as a disinfectant
(2) it is hygroscopic
(3) it is easily available
(4) It reduces transpiration
272. In a moss the sporophyte
(1) manufactures food for itself as well
as for the gametophyte
(2) produces gametes that give rise to
the gametophyte
(3) is partially parasitic on the gametophyte
(4) arises from a spore produced from
the gametophyte
273. Match items in Column I with those
in Column II:
Column I - Column II
(A) Peritrichous - (J) Ginkgo
flagellation
(B) Living fossil - (K) Macrocystis
(C) Rhizophore - (L) Escherichia coli
(D) Smallest - (M) Selaginella flowering
plant
(E) Largest perennial - (N) Wolffia alga
(1) A-N; B-L; C-K; D-N; E-J;
(2) A-L; B-J; C-M; D-N; E-K;
(3) A-J; B-K; C-N; D-L; E-K
(4) A-K; B-J; C-L; D-M; E-N
274. Which one of the following is a
living fossil?
(1) Saccharomyces
(2) Cycas
(3) Spirogyra
(4) Moss
275. Which of the following propagates
through leaf- tip?
(1) Marchantia
(2) Walking fern
(3) Moss
(4) Sproux-leaf plant
276. In gymnosperms, the pollen chamber
represents
(1) the microsporangium in which pollen grains develop
(2) a cavity in the ovule in which
pollen grains are stored after pollination
(3) a cell in the pollen grain in which
the sperms are formed.
(4) an opening in the megagametophyte
through which the pollen tube approaches the egg
277. Flagellated male gametes are
present in all the three of which one of the following sets?
(1) Riccia, Dryopteris and Cycas
(2) Zygnema, Saprolegnia and Hydrilla
(3) Anthoceros, Funaria and Spirogyra
(4) Fucus, Marsilea and Calotropis
278. If you are asked to classify the
various algae into distinct groups, which of the following characters you
should choose?
(1) chemical composition of the cell
wall
(2) nature of stored food materials in
the cell
(3) types of pigments present in the cell.
(4) structural organization of thallus
279. In the prothallus of a vascular
cryptogam, the antherozoids and eggs mature a different times. As a result
(1) self-fertilization is prevented
(2) there is high degree of sterility
(3) there is no change in success rate
of fertilization
(4) one can conclude that the plant is
apomictic
280. Conifers differ from grasses in the
(1) formation of endosperm before fertilization
(2) lack of xylem tracheids
(3) production of seeds from ovules
(4) absence of pollen tubes
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