- Complete the following flow chart by selecting the correct
option.
Polysiphonia
(n)
Spermatium
A B C D
(a) Carpogonium Cystocarp Tetrasporo- Tetraspore
phyte
(b) Cystocarp Carpo- Tetrasporo- Tetraspore
gonium phyte
(c) Tetrasporophyte Cystocarp Carpogonium Tetraspore
(d) Cystocarp Carpo- Tetraspore Tetrasporo-
gonium phyte
- Match column I with column II and select the correct option
from the given codes.
Column I Column II
A. Alginic acid (i) Rhodomela
B. Bromine (ii) Gracilaria
C. Agar (iii) Chlamydomonas
D. Sewage oxidation (iv) Polysiphonia
(v) Gelidium
(vi) Laminaria
(vii) Scenedesmus
(viii) Sargassum
(a) A-(ii, v) , B-(iii, iv), C-(i, viii), D-(vi, vii)
(b) A-(vi, viii), B-(i, iv), C-(ii, v), D-(iii, vii)
(c) A-(vi, iii) , B-(ii, v), C-(i, viii), D-(iv, vii)
(d) A-(vi, viii), B-(vii, iv), C-(ii, v), D-(i, iii)
- Which of the following characters represents the affinities of
Gnetum with angiosperms and differences with Cycas and
Pinus?
(a) Presence of vessel in xylem
(b) Two integuments
(c) Embryo development
(d) Absence of resin duct
- Which of the following plants exhibits double fertilisation?
(a) Draparnaldia (b) Mussaenda
(c) Pellia (d) Araucaria
- Read the given statements and select the incorrect ones.
(i) A coenobium is a colony having definite number of
cells embedded in a common matrix.
(ii) All algae are autotrophic.
(iii) Heterotrichy is a condition wherein branches get
modified into leaves and air bladders.
(iv) In Volvox, asexual reproduction occurs through
formation of palmella stage.
(a) (i), (iii) and (iv) (b) (ii), (iii) and (iv)
(c) (i), (ii) and (iii) (d) (i), (ii) and (iv)
10. Which of the following differentiates conifers from grasses?
(a) Formation of endosperm before fertilisation
(b) Production of seeds from ovules
(c) Lack of xylem tracheids
(d) All of these
11. In which of the following aspect do bryophytes resemble
algae?
(a) Thallus like plant body, absence of asexual spores and
autotrophic nutrition.
(b) Thallus like plant body, lack of vascular tissues and
autotrophic nutrition.
(c) Filamentous body, presence of vascular tissues and
autotrophic nutrition.
(d) Differentiation of plant body into true root, stem and
leaves and autotrophic nutrition.
12. In the prothallus of a vascular cryptogam, the antherozoids
and eggs mature at different times. As a result
(a) there is high degree of sterility
(b) one can conclude that the plant is apomictic
(c) self fertilisation is prevented
(d) there is no chance of cross fertilisation.
13. Haplodiplontic alternation of generation occurs in
(a) Funaria, Spirogyra, Selaginella
(b) Spirogyra, Rhizopus, Selaginella
(c) Funaria, Selaginella, Cycas
(d) Rhizopus, Funaria, Spirogyra.
14. Which of the following is a characteristic feature of
gymnosperms?
(a) The gymnosperms are homosporous.
(b) The male and female gametophytes do not have
independent free living existence.
(c) The pollen grain is released from the megasporangium.
(d) The ovules are enclosed within the ovary.
15. Asexual reproduction in liverworts takes place by
(a) fragmentation of thalli and gemmae formation
(b) gemmae formation and akinete formation
(c) spore formation and isogamy
(d) fragmentation and zoospore formation.
16. Select the wrong statement.
(a) In Oomycetes, female gamete is smaller and motile,
while male gamete is larger and non-motile.
(b) Chlamydomonas exhibits both isogamy and anisogamy
however Fucus shows oogamy.
(c) Isogametes are similar in structure, function and
behaviour.
(d) Anisogametes differ in size, function or behaviour.
17. Selaginella and Salvinia are considered to represent a
significant step towards evolution of seed habit because
(a) female gametophyte is free and gets dispersed like
seeds
