Male and female gametophytes do not have an independent free-living existence in:
1. Pteridophytes
2. Algae
3. Angiosperms
4. Bryophytes
Consider the following four statements:
(A) | The sporophyte in liverworts is more elaborate than that in mosses |
(B) | Salvinia is heterosporous |
(C) | The life cycle in all seed-bearing plants is diplontic |
(D) | In Pinus male and female cones are borne on different trees |
The two wrong statements together are:
1. Statements (A) and (B)
2. Statements (A) and (C)
3. Statements (A) and (D)
4. Statements (B) and (C)
In angiosperm, characters of flowers are used in classification because:
1. Characters of flowers are conservative
2. Flowers are large
3. Flowers are attractive
4. None of the above
Embryo of sunflowers have:
1. Two cotyledons
2. One cotyledons
3. Eight cotyledons
4. Cotyledons absent
Angiosperms have dominated the land flora primarily because of their:
1. Property of producing a large number of seeds
2. Nature of self-pollination
3. Domestication by man
4. Power of adaptability in diverse habitat
Which of the following is without exception in Angiosperms:
1. Presence of vessels
2. Double fertilisation
3. Secondary growth
4. Autotrophic nutrition
If the diploid number of a flowering plant is 36. What would be the chromosome number in its endosperm?
1. 36
2. 18
3. 54
4. 72
The embryo sac of an angiosperm is made up of
1. 8 cells
2. 7 cells and 8 nuclei
3. 8 nuclei
4. 7 cells and 7 nuclei
Select the correct statement(s)
1. Only a few bryophytes are heterosporous
2. Double fertilization is unique to angiosperms
3. Strobili are found in Selaginella & Salvinia
4. Female gametophytes of gymnosperm have an independent free-living existance
Which of the following feature(s) is/are exclusive in angiosperms :-
a. Presence of fruit
b. Double fertilization
c. Female gametophyte
d. Presence of flowers
e. Formation of endosperm
f. Presence of vessels and companion cells
Tick the right one :-
1. a, b, c, e
2. b, c, d, e
3. b, d, e, f
4. a, b, d, f