Q. No.Which of the following is not seen in red algae?
1.
2 unequal flagella
2.
Cellulose cell wall
3.
Phycoerythrin
4.
Floridean starch
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Which of the following would not be true regarding importance of algae?
1. They increase level of dissolved oxygen in water
2. Many can be used as food source
3. They are the source of most antibiotics known to man
4. Products like hydrocolloids [algin] and agar are useful to man
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Identify the incorrect statement regarding red algae:
1. Major pigments are chlorophyll a, c and phycocyanin
2. Stored food is floridean starch
3. Cellulosic cell wall with pectin and polysulfate esters
4. Absent flagellar insertions
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Prothallus is a:
| 1. | Multicellular, free-living, mostly photosynthetic thalloid gametophyte in pteridophytes |
| 2. | Multicellular, free-living, mostly photosynthetic thalloid sporophyte in pteridophytes |
| 3. | Multicellular, free-living, non photosynthetic thalloid gametophyte in pteridophytes |
| 4. | Multicellular, free-living, mostly photosynthetic well differentiated sporophyte in pteridophytes |
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Gracilaria and Gelidium, that are source of Agar, belong to:
| 1. | Chlorophyceae | 2. | Rhodophyceae |
| 3. | Phaeophyceae | 4. | Fungi |
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Consider the following two statements:
I. In Selaginella and Salvia, development of zygotes into young embryos takes place within the female gametophyte.
II. Selaginella and Salvia are homosporous pteridophytes
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is true but II is false
4. I is false but II is true
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Identify the incorrect statement regarding gymnosperms in general:
1. They are heterosporous
2. Megaspore mother cell is differentiated from a cell in the nucellus
3. Multicellular female gametophyte is retained on the megasporangium
4. The male gametophyte has a large number of cells
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A species of red algae has been discovered near Bahamas at a depth of more than 260 m. This unusual feat is possible because this alga:
1. lacks pigmentation and functions heterotrophically as parasite on other plants
2. has significant amount of phycoerythrin in addition to chlorophyll a and d
3. unlike other red algae has flagellated gametes
4. it has large number of root like rhizoids enabling it to attach to a deep substratum
Sphagnum can be distinguished from mosses by all the following characteristics except:
1. The stem has no rhizoids
2. Leaves have green and hyaline cells
3. The sex organs do not limit the indefinite growth of the main axis
4. The capsule is borne on seta
In contrast to conifers, gnetophytes produce:
1. Simple pollen strobili and simple seed strobili
2. Simple pollen strobili and compound seed strobili
3. Compound pollen strobili and simple seed strobili
4. Compound pollen strobili and compound seed strobili
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