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.
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
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
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
D.
(A) and (D) are correct
The anthers following meosis produces pollen grains. In an embryosac, the primary endosperm nucleus (PEN) is triploid.
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
Pick out the wrong statement
(A) Apoplast is the system of adjacent cell walls that is continuous throughout the plant
(B) Endodermis is impervious to water molecules
(C) Pinus seeds germinate and establish without the presence of mycorrhizae.
(A) and (B)
(B) and (C)
(C) only
(B) only
(B) only
Which of the following is false in angiosperms?
Egg cell – Haploid
Megaspore – Diploid
Pollen grain – Haploid
Synergid – Haploid
Synergid – Haploid
Diplontic type of life cycle is seen in
(i) Fucus
(ii) Gymnosperms
(iii) Pteriodophytes
(iv) Bryophytes
(i) only
(i) and (iv) only
(i) and (iii) only
(iii) only
(iii) only
Which of the following statements is wrong about bryophytes?
Bryophytes are also called amphibian of the plant kingdom.
The gametophyte is the main plant body
Sexual reproduction takes place in the presence of water
Sporophyte is not free-living but attached to the photosynthesis gametophyte
Sporophyte is not free-living but attached to the photosynthesis gametophyte