Water bloom is generally caused by
Green algae
Blue-green algae
Bacteria
Hydrilla
Related Questions
Archegonium is
Female sex organ
Aggregation of Sporophyll
Vegetatively reproducting structure
Male sex organ
Which of the following is NOT a characteristic feature of the Pteridophytes?
Presence of vascular tissues
Sporophyte as the dominant phase
Seeds enclosed in fruits
Independent gametophyte
Nostoc fixes dinitrogen in symbiotic association with the following
I. Alnus II. Gunnera
III. Anthoceros IV. Casuarina
I and II
II and III
I and III
I and IV
Artificial system of classification was given by
Aristotle
Linnaeus
Theophrastus
Haeckel
Which of the following statements is right?
Fronds are found in bryophytes
Multiciliate sperms are found in angiosperms
Diatoms produce basidiospores
Heterocysts are found in Nostoc
The red colour of ‘red sea’ is due to which of the following blue-green algae?
Chlamydomonas
Anabaena
Microcystis
Trichodesmium
Which algal group is characterized by the presence of mannitol as the reserve food material?
Chlorophyceae
Rhodophyceae
Phaeophyceae
Cyanophyceae
Which of the following is autotrophic?
Virus
Mycoplasma
Nostoc
All of these
Which of the following is incorrect with respect to angiosperms?
Endosperm – Triploid
Megaspore – Diploid
Pollen grain – Haploid
Synergid – Haploid
In a monoecious plant
Male and female sex organs are on different individuals
Male and female gametes are of two morphologically distinct types
Male and female sex organs are on the same individual
All the stamens are fused to form one unit
