In a moss, the sporophyte:
(1) is partially parasitic on the gametophyte
(2) produces gametes that give rise to the gametophyte
(3) arises from a spore produced from the gametophyte
(4) manufactures food for itself, as well as for the gametophyte
Which one of the following statements is wrong?
(1) Algin and carrageenan are products of algae
(2) Agar-agar is obtained from Gelidium and Gracilaria
(3) Chlorella and Spirulina are used as space food
(4) Mannitol is stored food in Rhodophyceae
Male gametes are flagellated in
1. Polysiphonia
2. Anabaena
3. Ectocarpus
4. Spirogyra
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)