181.

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

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

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