Algae are useful because they
are large in number
are used in alcoholic fermentation
purify the atmosphere
are used in curdling of milk.
The plant body of moss (Funaria) is
completely sporophyte
predominantly sporophyte with gametophyte
completely gametophyte
predominantly gametophyte with sporophyte
Which of the following groups of algae belongs to class Rhodophyceae?
Laminaria, Fucus, Porphyra, Volvox
Gelidium, Porphyra, Dictyota, Fucus
Gracilaria, Gelidium, Porphyra, Polysiphonia
Volvox, Spirogyra, Ulothrix, Sargassum
Volvox, Spirogyra, Ulothrix, Sargassum
Which of the following are heterosporous pteridophytes?
I. Lycopodium
II. Selaginella
III. Equisetum
IV. Salvinia
I and II only
II and III only
II and IV only
II and IV only
II and IV only
Match the following and choose the correct combination from the options given
Column I (Alga type) | Column II (Example) |
A. Green alga | 1. Dictyota |
B. Brown alga | 2. Prophyra |
C. Red alga | 3. Spirogyra |
A - 3; B - 2; C - 1
A - 3; B - 1; C - 2
A - 2; B - 3; C - 1
A - 1; B - 2; C - 3
A - 1; B - 2; C - 3
Choose the correct statement.
Bryophytes can live in soil but are dependent on water for sexual reproduction
The sex organs in bryophytes are unicellular
In bryophyte the main plant body is a gametophyte which is differentiated into true root, stem and leaves
Common example of liverwort is Polytrichum
Common example of liverwort is Polytrichum
Read the following statements and identify the correct options given
(A) Angiosperms range in size from microscopic Wolfia to tall trees of Eucalyptus
(B) In angiosperms, the seeds are enclosed by fruits
(C) Double fertilisation is an event unique to angiosperms
(D) In angiosperms, each cell of an embryo sac is diploid
(E) In angiosperms, the zygote develops into an endosperm
(A), (B) and (D) alone are correct
(A), (B) and (E) alone are correct
(A), (B) and (C) alone are correct
(B), (C) and (D) alone are correct
(B), (C) and (D) alone are correct