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
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
Pick out the statement that does not apply to bryophytes
Includes the ferns and horsetails
Thallus is a gametophyte
Sporophyte shows foot, seta and capsule
Gemmae help in reproduction
Gemmae help in reproduction
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
Pick out the wrong statement
Gymnosperms lack vessels in their xylem.
The cell wall of collenchyma is made up of cellulose, hemicellulose and pectin
The first formed primary xylem elements are called protoxylem
The cell wall of parenchyma is made up of pectin.
The cell wall of parenchyma is made up of pectin.
Pick out the wrong statement
Gymnosperms lack vessels in their xylem
The cell wall of parenchyma is made up of pectin
The first formed primary xylem elements are called protoxylem
Gymnosperms have albuminous cells and have sieve
cells in their phloem
Gymnosperms have albuminous cells and have sieve
cells in their phloem
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
Which of the following is a characteristic feature of gymnosperms?
The gymnosperms are homosporous
The male and female gametophytes do not have independent free living existence
The sporophyte is dependent on the gametophyte
The ovules are enclosed by the ovary
The ovules are enclosed by the ovary
Consider the following statements with respect to angiosperms
(A) The male sex organ in a flower is the stamen
(B) The anthers following mitosis produce pollen grains
(C) In an embryosac, the primary endosperm nucleus (PEN) is diploid
(D) After double fertilization the ovules develop into seeds and ovaries develop into fruit.
Of the above statements
(C) and (D) are correct
(A) and (B) are correct
(A) and (C) are correct
(A) and (D) are correct
(A) and (D) are correct
Choose the correct statement
Members of phycomycetes are facultative parasites on plants
Fusion of protoplasms between two motile or non-motile gametes is called plasmogamy
Kingdom Plantae includes all eukaryotic chlorophyll containing organisms and non-chlorophyll organisms called plants
Trichoderma belongs to basidiomycetes
Trichoderma belongs to basidiomycetes
