In angiosperms, each embryo sac has a three-celled egg apparatus one egg cell and two synergids, three antipodal cells and two polar nuclei.
All seed bearing plants i.e., gymnosperms and angiosperms follow dipontic life patterns of plants.
In gymosperms, roots in some genera have fungal association in the form of mycorrhiza (Pinus) while in some others (Cycas) small specialized roots called coralloid are associated with N2 fixing cyanobacteria.
All of the above
D. All of the above
numerical taxonomy
cytotaxonomy
chemotaxonomy
all of the above
only a few morphological characters.
evolutionary tendencies which are diverse.
anatomical characters which are adaptive in nature.
physiological traits alongwith morphological characters.
Carolus Linnaeus
Bentham and Hooker
Engler and Prantl
R. H. Whittaker
Column-I | Column-II |
---|---|
A. Agar | I. Single cell protein, used as food supplements by space travellers |
B. Algin | II. Red algae |
C. Carrageen | III. Brown algae |
D. Chlorella | IV. Gelidium, Gracilaria Spirullina |
A I; B II; C III; D IV
A IV; B III; C II; D I
A II; B I; C III; D IV
A III; B II; C I; D IV
A mechanism for moving water throughout the plant.
A mechanism to prevent desiccation of tissues.
An ability to screen ultraviolet radiation.
Both (b) and (c)
moss
dicots
liverwort
gymnosperm
Chara, Fucus, Polysiphonia
Volvox, Spirogyra, Chlamydomonas
Porphyra, Ectocarpus, Ulothrix
Sargassum, Laminaria, Gracilaria
Phloem of both have companian cells.
Endosperm is formed before fertilization in both.
Origin of ovule and seed is similar in both.
Both have leaves, stem and roots.
Most algae are photosynthetic.
Algae can be classified according to their pigments.
All algae are filamentous.
Spirogyra does not produce zoospores.
chlorophyceae
bryophyte
pteridophyte
gymnosperm
(i) and (ii)
(iii) only
(ii) and (iii)
(iii) and (iv)
In angiosperms, each embryo sac has a three-celled egg apparatus one egg cell and two synergids, three antipodal cells and two polar nuclei.
All seed bearing plants i.e., gymnosperms and angiosperms follow dipontic life patterns of plants.
In gymosperms, roots in some genera have fungal association in the form of mycorrhiza (Pinus) while in some others (Cycas) small specialized roots called coralloid are associated with N2 fixing cyanobacteria.
All of the above
(i) and (v) only
(ii), (iii) and (iv) only
All of the above
None of the above
Haplontic
Diplontic
Haplo-diplontic
None of these
Equisetum and Psilotum
Lycopodium and Adiantum
Selaginella and Pteris
Pteris and Adiantum
Both (i) and (ii)
Both (ii) and (iv)
Both (iii) and (iv)
All of these
three mitotic divisions.
one meiotic and two mitotic divisions.
two meiotic divisions.
a single meiotic division.
Two
Three
Four
One
classification of chemicals found in plants.
use of phytochemical data in systematic botany.
application of chemicals on herbarium sheets.
use of statistical methods in chemical yielding plants.
Algae
Bryophytes
Pteridophytes
Gymnosperms
(i) is correct, but (ii) and (iii) are incorrect
(i) and (ii) are correct, but (iii) is incorrect
(i) and (iii) are correct, but (ii) is incorrect
(iii) is correct, but (i) and (ii) are incorrect
absence of pollination.
absence of seed.
absence of fertilization.
absence of ovary.
Column-I | Column-II |
---|---|
(Pattern of life cycle in plant) | (Examples) |
A. Haplontic | I. Bryophytes, Pteridophytes, life cycle Ectocarpus, Polysiphonia, Kelps |
B. Diplontic | II. Seed bearing plants life cycle (Gymnosperm and Angiosperm), Fucus |
C. Haplo-diplontic | III. Many algae (Volvox, life cycle Spirogyra) and some species of Chlamydomonas |
A III; B II; C I
A I; B II; C III
A II; B I; C III
A III; B I; C II
morphologically identical haploid and diploid stages.
genetically identical haploid and diploid stages.
alteration of generations between heteromorphic haploid gametophytes and diploid sporophytes.
none of the above
red algae, brown algae, green algae respectively.
brown algae, red algae, green algae respectively.
red algae, green algae, brown algae respectively.
green algae, brown algae, red algae respectively.
Zoospore
Endospore
Hypnospore
None of the above
Both statements -1 and statement - 2 are true and statement - 2 is the correct explanation of statement - 1.
Both statements -1 and statement - 2 are true but statement - 2 is not the correct explanation of statement - 1.
Statement -1 is true and statement - 2 is false.
Statement -1 is false and statement - 2 is true.
morphological characters of various organisms.
anatomical characters of various organisms.
physiological characters of various organisms.
evolutionary relationships between the various organisms.
A holdfast, B stipe, C frond
A stipe, B holdfast, C frond
A frond, B stipe, C holdfast
A stipe, B frond, C holdfast
Nature of habitat
Structural organization of thallus
Chemical composition of the cell wall
Types of pigments present in the cell.