Which of the following plant hormones is incorrectly matched with its effect on plant growth?
Auxins : Leaf abscission
Gibberellins : Stem elongation
Cytokinins : Shoot formation
Abscisic acid : Leaf abscission
Related Questions
The thallus of Volvox is called
Trichome
Coenobium
Coenocytes
Parenchymatous
In Chlorophyceae, the mode of sexual reproduction is
Anisogamy
Oogamy
Isogamy
All of these
Calcium encrustation and larvicidal properties are present in
Chara
Oscillatoria
Diatoms
Canlerapa
In algae, sexual reproduction takes place through the fusion of two
Spores
Fragments
Gametes
Zoospores
How many pyrenoids are present in the members of class-Chlorophyceae?
One
Two
One to many
Pyrenoids are absent
Sexual reproduction in Spirogyra is an advanced feature because it shows
Morphologically differentiated sex organs
Physiologically differentiated sex organs
Different sizes of motile sex organs
Same size of motile sex organs
Zygote of Spirogyra produces four haploid nuclei in which
One is functional
Two are functional
Three are functional
All are functional
About 90% of the total green algae is found in
Marine environment
Freshwater environment
Rivers
Terrestrical environment
Ulothrix releases zoospore during
Evening
Morning
Night
Noon
Which of the following is a motile colonial form of Chlorophyceae?
Spirogyra
Chlamydomonas
Volvox
Ulothrix
