Biology Multiple Choice Questions and Answers for Different Competitive Exams

Practice Test on Algae - Diversity in Living World

Algae are pigmented thallophytes. They prepare their own food materials with the help of chlorophyll and sunlight. So they are said to be autrotrophs. Besides chlorophyll there are other colored pigments in algae. Structure and reproduction of algae was written by Fritsch. He is known as father of phycology. Fritsch classified algae into 11 classes on the basis of type of pigments, nature of reserve food material and mode of reproduction. Read more>>
Biology Practice Test: Algae
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Dictyota dichotoma (Phaeophyceae)
1. What among the following do you consider the best evidence to show that two species of algae are closely related?
they both have same type of pigments
they both have reproduce sexually
they both respire and release carbondioxide
they both have same type of pigments
2. In eukaryotic algae and fungi, flagella and cilia of zoospores and gametes are
have 1+0 arrangement of fibrils
The peripherals fibrils are triplets and central are doublets
have 9+0 arrangement of fibrils
generally similar and have 9+2 arrangement of fibrils. The peripheral fibrils are doublelets and central fibrils are just canal like
3. Filaments of Ulothrix produce
Isogametes
Anisogametes
Heterogametes
None of these
4. Vaucheia, a siphonaceous alga, belongs to
Chlorophyceae
Xantophyceae
Cyanophyceae
Charophyceae
5. Trumpet hyphae in certain brown algae resemble
Tracheids
Trachea
Sieve tubes
Sclerenchymatous fibres
6. Non motile gamaetes are characteristically found in
Rhodophyta
Cyanophyta
Phaeophyta
Chlorophyta
7. Fairly good yield of rice can be had over a number of years without adding any nitrogenous manure because
they require very minute quantities of nitrogen.
Rice plants do not require any nitrogen
There are nitrogen fixing blue green algae in the rice fields
Their roots have nitrogen fixing bacteria associated with them
8. The algal component in lichen generally belongs to the class
Xanthophyceae
Phaeophyceae
Cyanophyceae
Rhodophyceae
9. Among the following which is obtained from algae
Agar agar
Wax
Chocolate
butter
10. Water bloom is generally caused by
Hydrilla
Bacteria
Blue green algae
Green algae
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