Q. No.
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
The green alga rich in proteins used as food supplements even by space travelers is
1. Chlorella
2. Scendesmus
3. Porphyra
4. Carrageen
In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result:
1.
there is no change in success rate of fertilization
2.
there is high degree of sterility
3.
one can conclude that the plant is apomictic
4.
self fertilization is prevented
The most primitive among the living vascular plants are the
| 1. | ferns | 2. | brown algae |
| 3. | mosses | 4. | cycads |
Non flowering plants are included under
(1) cryptogamae
(2) phanerogamae
(3) angiosperms
(4) Both a and b
Roots of higher plants show symbiosis with mycorrhiizas for obtaining
| 1. | sulphates | 2. | nitrogen |
| 3. | phosphates | 4. | All of these |
Shape of chloroplast present in Ulothrix is
(1) cup shaped
(2) girdle shaped
(3) star shaped
(4) diffused type
This plant is used as a packing material and also forms an excellent fodder for feeding cattle.
(1) Medicago
(2) Pongamia
(3) Cratolaria
(4) All of these
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