In the given diagram of the green alga Chara, the parts labeled A and B respectively are called :
1. Nucule and Globule
2. Globule and Nucule
3. Antheridium and Archegonium
4. Archegonium and Antheridium
In the life cycle of a moss, the sporphytic generation is represented by all the following except:
1. | Oospore | 2. | Spore |
3. | Sporogonium | 4. | Spore mother cell |
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Identify the incorrectly matched row:
|
Character |
Gymnosperm |
Angiosperm |
1. |
Xylem |
Tracheids only |
Mainly vessels |
2. |
Pollination agency |
Water only |
Various |
3. |
Female gametophyte |
Relatively large with distinct Archegonia |
8-nucleate embryo sac |
4. |
Endosperm |
Haploid |
Triploid |
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Aplanogametes [gametes that do not have flagella] are the special features of:
1. Spirogyra and Zygnema
2. Spirogyra and Vaucheria
3. Ulothrix and Zygnema
4. Chlamydomanas and Ulothrix
Match each item in column I with one in Column II and select the correct answer from the codes given below:
Green alga |
Feature |
A. Chlamydomanas |
a. Spiral chloroplasts |
B. Volvox |
b. Coenobium with two kinds of cells |
C. Hydrodictyon |
c. Palmella stage |
D. Spirogyra |
d. Non motile colony |
Codes:
A | B | C | D | |
1. | a | d | b | c |
2. | a | b | c | d |
3. | c | b | a | d |
4. | c | d | a | b |
The term ‘seaweeds’ is used to describe several macroscopic, multicellular marine algal species belonging to:
I. Chlorophyceae
II. Phaeophyceae
III. Rhodophyceae
1. | I and II only | 2. | I and III only |
3. | II and III only | 4. | I, II and III |
The given pattern of life cycle will be seen in:
1. Spirogyra | 2. Fucus |
3. Ectocarpus | 4. Polysiphonia |
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The given pattern of life cycle will be seen in:
1. Spirogyra | 2. Fucus |
3. Ectocarpus | 4. Polysiphonia |
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The given pattern of life cycle will be seen in:
1. Spirogyra | 2. Fucus |
3. Chlamydomanas | 4. Polysiphonia |
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Match each item in Column I with one in Column II and select the correct answer from the codes given:
Column I |
Column II |
A. Floridean starch |
a. It is created by photosynthesis and is made up of β(1→3)-glucan with β(1→6)-branches |
B. Laminarin |
b. An α-linked glucose polymer with a degree of branching intermediate between amylopectin and glycogen |
C. Mannitol |
c. A sugar alcohol, an isomer of sorbitol |
Codes
A | B | C | |
1. | a | b | c |
2. | a | c | b |
3. | b | a | c |
4. | c | b | a |