The world's tallest (angiosperm) flowering tree is

(1) Sequoia

(2) Eucalyptus

(3) Pinus

(4) Cedrus

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The wood of Pinus is

(1) manoxylic

(2) polyxylic

(3) pycnoxylic

(4) manoxylic and pycnoxylic

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Porous wood has abundance of

(1) vessels

(2) fibres only

(3) tracheids

(4) sieve tubes

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Algae are useful because they

(1) are large in number

(2) are used in alcoholic fermentation

(3) purify the atmosphere

(4) are used in curdling of milk

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The plant body of moss (funaria) is

(1) completely sporophyte

(2) predominatly sporophyte with gametophyte

(3) completely gametophyte

(4) predominantly gametophyte with sporophyte

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Megasporophyll of Cycas has the same nature as

(1) stamen

(2) petal

(3) sepal

(4) carpel

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The plant part which consists of two generations, one within the other, is

(a) germinated pollen grain

(b) embryo

(c) unfertilized ovule

(d) seed

Concept Questions :-

General Account of Angiosperms
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In Ulothrix meiosis takes place in

(1) cells of the filament

(2) holdfast

(3) zygote

(4) zoospores

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Mossess and ferns are found in moist and shady places because both

(1) require presence of water for fertilization

(2) do not need sunlight for photosynthesis

(3) depend for their nutrition on microorganisms which can survive only at low temperature

(4) cannot compete with sun-loving plants

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"Ordines Anomali" of Bentham and Hooker includes

(1) seed plants showing abnormal forms of growth and devlopment

(2) plants described only in fossil state

(3) plants described in the literature but which Bentham and Hooker did not see in original

(4) a few order which could not be placed satisfaction in the classification.

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