Agar- agar is obtained from

• Chlorella

• Spirogyra

• Ulothrix

• Gelidium

Calyptra is derived from

• archaegonia

• capsule

• antheridia

• columella

Which 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)

65.

Which on eof the following is a saprophytic bryophyte?

• Riccia fluitans

• Buxbaumia aphylla

• Funaria hygrometrica

• Sphagnum

Iodine is obtained from 

• Laminaria

• Chlorella

• Polysiphonia

• Porphyra

Male gamete in angiosperm is produced by

• generative cell

• microspore cell

• vegetative cell

• tube cell

Phytochrome is present in

• vascular cryptogam

• prokaryotes

• flowering plants

• algae

Vessels and companion cells are found in

• angiosperm

• pteridophytes

• bryophytes

• thallophytes

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