Download App

Plant Kingdom — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYPlant Kingdom2 Marks
Question
Explain briefly the alternation of generation in bryophytes.
✓

Answer

Bryophytes show alternation of generation. The main plant body is gametophyte. After fertilisation of egg and spermatozoids, zygotes do not undergo reduction division and they produce a multicellular body called sporophyte. Then some cells undergo division and produce haploid spores which germinate to produce gametophyte.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Plant Kingdom→Plant Kingdom — all question types→BIOLOGY STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Two groups (A and B) of bean plants of similar size and same leaf area were placed in identical conditions. Group A was exposed to light of wavelength 400 450 nm and Group B to light of wavelength of 500-550 nm. Compare the photosynthetic rate of the two groups giving reason.
→
There are indications of presence of alcohol around the roots in waterlogged rice fields. Give the reason for this.
→
Bring out the major differences between thallophytes (algae) and bryophytes.
→
Which one of the following animals possesses nerve cells but no nerves?
  1. Hydra.
  2. Tapeworm.
  3. Earthworm.
  4. Frog’s tadpole.
→
It is rightly said that development of root pressure requires energy. Justify.
→
Starch, cellulose, glycogen, chitin are polysaccharides. From the options below, choose the one appropriate and write against
each.
  • Cotton fibre ________.
  • Exoskeleton of cockroach ________.
  • Liver ________.
  • Peeled potato ________.
→
Write four functions of bones.
→
At which places are Bryophyta plants found?
→
  1. Why do members of Phaeophyceae vary in colour from olive green to various shades of brown?
  2. Name any four common members of Phaeophyceae.
→
Sleeping under a tree at night leads to poor health. Why?
→