The most primitive among the living vascular plants are the
(1) ferns
(2) brown algae
(3) mosses
(4) cycads
Chlorophyll present in red algae is
1. | a, d | 2. | a, b |
3. | a, c | 4. | b, c |
Algae are useful because they
(1) are large in number
(2) are used in alcoholic fermentation
(3) purify the atmosphere
(4) are used in curdling of milk
The plant body of moss (funaria) is
(1) completely sporophyte
(2) predominatly sporophyte with gametophyte
(3) completely gametophyte
(4) predominantly gametophyte with sporophyte
Mossess and ferns are found in moist and shady places because both
(1) require presence of water for fertilization
(2) do not need sunlight for photosynthesis
(3) depend for their nutrition on microorganisms which can survive only at low temperature
(4) cannot compete with sun-loving plants
Gametophyte and sporophyte are independent of each other in which of the following groups?
1. | Pteridophytes | 2. | Angiosperms |
3. | Gymnosperms | 4. | Bryophytes |
Match Column - I with Column - II and select the correct option from the codes given below.
Column - I | Column - II | ||
A. | Chlorophyta | (i) | Equisetum |
B. | Lycopsida | (ii) | Chara |
C. | Phaeophyta | (iii) | Selaginella |
D. | Sphenopsida | (iv) | Ectocarpus |
Codes:
1. A - (ii), B - (iii), C - (iv), D - (i)
2. A - (iv), B - (i), C - (ii), D - (iii)
3. A - (ii), B - (iii), C - (i), D - (iv)
4. A - (iv), B - (i), C - (iii), D - (ii)
Which of the following genera is associated with coralloid roots?
(1) Cycas
(2) Taxus
(3) Pinus
(4) Sequoia
Match the following selected the correct option.
Column - I | Column - II | ||
A. | Pteris | (i) | Gymnosperm |
B. | Cycas | (ii) | Bryophyte |
C. | Sphagnum | (iii) | Algae |
D. | Sargassum | (iv) | Pteridophyta |
1. A - (iv), B - (ii), C - (i), D - (iii)
2. A - (iv), B - (i), C - (ii), D - (iii)
3. A - (ii), B - (iii), C - (iv), D - (i)
4. A - (i), B - (iv), C - (iii), D - (ii)
Which of the following groups of algae produces algin?
(1) Phaeophyceae and Chlorophyceae
(2) Rhodophyceae and Phaeophyceae
(3) Chlorophyceae and Rhodophyceae
(4) Phaeophyceae only