Q. No.The correct description of zoospores involved in asexual reproduction in most brown algae will be:
1. Biflagellate, pear-shaped, lateral unequal flagella
2. Biflagellate, pear-shaped, apical equal flagella
3. Biflagellate, lens-shaped, lateral unequal flagella
4. Biflagellate, lens-shaped, apical equal flagella
1. Biflagellate, pear-shaped, lateral unequal flagella
2. Biflagellate, pear-shaped, apical equal flagella
3. Biflagellate, lens-shaped, lateral unequal flagella
4. Biflagellate, lens-shaped, apical equal flagella
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Porphyra, Sargassum and Laminaria are all:
I. brown algae
II. marine edible algae
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
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Which of the following pairs is of unicellular algae?
| 1. | Gelidium and Gracilaria |
| 2. | Anabaena and Volvox |
| 3. | Chlorella and Spirulina |
| 4. | Laminaria and Sargassum |
What would be true regarding reproduction by ‘zoospores’ in algae and fungi?
| 1. | While they are produced in sexual reproduction in algae, in fungi they are produced in asexual reproduction. |
| 2. | While they are produced in sexual reproduction in fungi, in algae they are produced in asexual reproduction. |
| 3. | They are flagellated and motile in algae and non-motile in fungi. |
| 4. | They are motile and produced in asexual reproduction in both algae and fungi. |
Identify the correct statement regarding members of Phaeophyceae:
1. The main photosynthetic pigment is fucoxanthin and chlorophyll a is absent.
2. The stored food is in the form of mannitol and laminarin is toxic to them.
3. Their cell walls have algin and polysulphate esters.
4. The flagellar number is 2, unequal in size and attached laterally.
Match the terms in Column I with their correct description in Column II and select the correct match from the codes given:
| Column I | Column II | ||
| A | Protonema | P | The first stage in development of the gametophyte in mosses. |
| B. | Prothallus | Q | The photosynthetic gametophyte in ferns. |
| C. | Seta | R | In bryophytes, the stalk that supports the capsule, if present. |
| D. | Stipe | S | The stem-like part of the thallus of brown algae such as kelp |
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | Q | P | R | S |
| 3. | P | Q | S | R |
| 4. | Q | P | S | R |
Identify the correctly matched pair:
| Pteriodophyte | Class | |
| 1. | Psilopsida | Adiantum |
| 2. | Lycopsida | Selaginella |
| 3. | Sphenopsida | Dryopteris |
| 4. | Pteropsida | Equisetum |
The terms that can be applied to all gymnosperms include:
| 1. | Naked seeds, Homosporous, Dominant independent sporophyte |
| 2. | Seeds enclosed in ovary wall, Heterosporous, Dominant independent sporophyte |
| 3. | Naked seeds, Heterosporous, Dominant independent sporophyte |
| 4. | Naked seeds, Heterosporous, Dominant independent gametophyte |
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