Plant kingdom bryophyta Flashcards
What is the tagline?
Haploid ,Thalloid ,autotrophic ,with embryo
what are sciophytes
living in damp,cool and shady places
who is the amphibian of plant kingdom?
bryophyta
what is special about bryophyta?
- with embryo (embryophytes)
- First land plant w/o vascular system
why do they need water?
for sexual reproduction
what type of thallus do bryophyta have?
- advanced than algae
- no true roots,stem and leaves.Root like rhizoids and leaf and stem like structures present.
describe the dorsal side of riccia .
- green and photosynthetic
- dichotomy : branching in thallus
- median grove
what is dichotomy in riccia?
branching of thallus
describe the ventral side of riccia.
- spines to protect the edge of thallus (yellow to orange)
- root like structure which are not deploid
what are the two types of rhizoid in riccia?
smooth walled - smooth cell membrane
constricted walled - constricted cell membrane
describe vertical transverse section in riccia
deposition of water in median grove where the sex organs are present
what is the male sex organ called?ploydy? in riccia
antheridium (n)
what are the cells of antheridium called in riccia?
androgonial cells / amdrocytes.
what are male gametes called and how are they formed? describe structure as well.
antherozoides are formed by the mitosis of androgonial cells. coiled and biflaggleted.
What is the female sex organ called?
archigonium
