Which of the following is not correct with respect to Algae?
(1) Algae is in highly variable forms
(2) Colonial form of algae - Volvox
(3) Filamentous forms of algae - Ulothrix and Spirogyra
(4) Marine Forms - Kelps and small plant body
The reproduction in Algae occurs by
(1) Vegetative
(2) Asexual
(3) Sexual
(4) All of these
Asexual reproduction is by the production of different types of spores. Out of that most common is
(1) Carpospore
(2) Zoospores
(3) Basidiospores
(4) Akinetes
Which of the following has flagellated male and female gametes?
(1) Ulothrix
(2) Volvox
(3) Spirogyra
(4) Fucus
Isogamous means
1. Both the gametes are equally motile
2. Both the gametes are unequal in terms of motility
3. Both the gametes are similar in size
4. All of these
Anisogamous
(1) Gametes dissimilar in size
(2) Gametes are similar in size but not in motility
(3) Gametes are similar in motility but not in size
(4) Gametes are similar in size and motility
Oogamous
(1) Non-motile male gamete
(2) Large male gamete
(3) Non-motile female gamete
(4) Small female gamete
Which of the following is an example of anisogamous reproduction in Algae?
(1) Eudorina
(2) Volvox
(3) Fucus
(4) Spirogyra
Algae are useful
(1) Because at least half of the total carbon dioxide fixation on Earth is carried out by algae through photosynthesis.
(2) Algae being photosynthetic can increase the level of dissolved oxygen in their immediate environment
(3) They are primary producers of energy rich compounds and form the basis of the food cycles of all aquatic animals
(4) All of the above
Hydrocolloid is
(1) Water soluble substance
(2) Water holding substance
(3) Hydrogen gas containing substance
(4) Oxygen gas containing substance