Multiple Choice QuestionsWhich of the following is not the feature of gymnosperms?
parallel venation
perennial plants
distinct branches (long and short branches)
xylem with vessels
Which of the following is/ are grouped under phanerogams?
Angiosperms
Gymnosperms
Pteridophytes
Both (a) and (b)
Which on eof the following is a saprophytic bryophyte?
Riccia fluitans
Buxbaumia aphylla
Funaria hygrometrica
Sphagnum
Male gamete in angiosperm is produced by
generative cell
microspore cell
vegetative cell
tube cell
The ability of the venus flytrap to capture insects is due to
chemical stimulation by the prey
a passive process requiring no special ability on the part of the plant
specialized "muscle-like" cells
rapid turgor pressure changes
D.
rapid turgor pressure changes
Insectivorous plants grow in water logged, swampy soils, deficient in nitrogenous compounds. These plants obtain their nitrogen compounds from the insects. Therefore, known as semi- autotrophic or semi- heterotrophic plants.
Dionea or venus fly trp is an insectivorous plant. They have winged petiole leaves and two toothed jaws. Upper surface of each jaw consists of long shaped hair or bristles. The hair are very sensitive to touch stimulus. Therefore, when an insect touches these hair, the stimulus causes rapid turgor pressure which results in closing of the leaf.
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