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.
B. use of phytochemical data in systematic botany.
Since most rhodophyta grow at great depths, the chlorophyll can only absorb light in the red area of the spectrum.
The wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin (a red pigment).
Red pigment of rhodophyta absorbs all the light waves.
The light reaching the greatest depth in water is in the blue-green region of the spectrum, is absorbed by phycoerythrin.
Zoospore
Endospore
Hypnospore
None of the above
Column-I | Column-II |
---|---|
A. Amphibian of the | I. Sphagnum plant kingdom |
B. Specialized structures | II. Angiosperms in liverworts for asexual reproduction |
C. Monocotyledons and | III. Bryophytes dicotyledons |
D. A plant which has | IV. Gemmae capacity to holding water |
A III; B IV; C I; D II
A III; B IV; C II; D I
A IV; B III; C II; D I
A III; B II; C IV; D I
The predominant stage of its life cycle is the gametophyte which consists of two stages protonema and leafy stages.
Leafy stage are attached to the soil through unicellular and branched rhizoids.
Sex organs-antheridia and archegonia are produced at the apex of the leafy shoots.
All of the above
Both (i) and (ii)
Both (ii) and (iii)
Both (i) and (iii)
All of these
Nature of habitat
Structural organization of thallus
Chemical composition of the cell wall
Types of pigments present in the cell.
morphological characters of various organisms.
anatomical characters of various organisms.
physiological characters of various organisms.
evolutionary relationships between the various organisms.
Gymnosperms, angiosperms, ferns, moss, algae
Algae, moss, ferns, gymnosperms, angiosperms
Moss, algae, ferns, angiosperms, gymnosperms
Algae, ferns, angiosperms, gymnosperms, moss
three mitotic divisions.
one meiotic and two mitotic divisions.
two meiotic divisions.
a single meiotic division.
Column -I | Column-II |
---|---|
(Classes of pteridophytes) | (Examples) |
A. Psilopsida | I. Selaginella |
B. Lycopsida | II. Psilotum |
C. Sphenopsida | III. Dryopteris |
D. Pteropsida | IV. Equisetum |
A II; B I; C IV; D III
A I; B II; C IV; D III
A II; B I; C III; D IV
A II; B IV; C I; D III
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
its contribution to prevent soil erosion.
its contribution in ecological succession.
its capability to remove CO from the atmosphere.
both (a) and (b)
Chlorophyceae
Phaeophyceae
Rhodophyceae
Both (a) and (b)
Liverworts
Moss
Fern
Gymnosperm
Column-I | Column-II |
---|---|
A. Phaeophyceae | I. Have an elaborate mechanism of spore dispersal |
B. Rhodophyceae | II. first terrestrial plant with vascular tissue-phloem and xylem |
C. Mosses | III. Asexual reproduction by biflagellate zoosposes |
D. Pteridophytes | IV. Polysiphonia, Porphyra, Gracilaria |
A III; B IV; C I; D II
A IV; B III; C I; D II
A IV; B III; C II; D I
A IV; B I; C III; D II
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.
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)
(i) and (v) only
(ii), (iii) and (iv) only
All of the above
None of the above
(i) and (ii)
(ii) and (iii)
(i), (ii) and (iii)
All of these
Column-I | Column-II |
---|---|
(System of classification) | (Characteristics) |
A. Artificial system | I. Based on few morphological of classification characters |
B. Natural system | II. Based on evolutionary of classification relationships between the various organisms |
C. Phylogenetic | III. Based on natural affinities system of among the organisms and classification consider external as well as internal features. |
A II; B I; C III
A I; B III; C II
A III; B II; C I
A I; B II; C III
14
21
28
42
green algae
brown algae
red algae
golden brown algae
(i) and (v)
(iii) and (v)
(i) and (ii)
(i) and (iv)
Pteridophyte gametophyte has a protonemal and leafy stage.
In gymnosperms, female gametophyte is free-living.
Antheridiophores and archegoniophores are present in pteridophytes.
Origin of seed habit can be traced in pteridophytes.
starch in their chloroplast.
vascular tissues.
chlorophyll.
cellulose in their cell walls.
microsporangia; macrosporangia
male strobili; female strobili
antheridia; archegonia
androecium; gynoecium
Column-I | Column-II |
---|---|
A. Smallest flowing plant | I. Eucalyptus |
B. Male sex organ in | II. Wolffia flowering plant |
C. Female sex organ | III. Stamen in flowering plant |
D. Tallest tree | IV. Pistil |
A I; B II; C III; D IV
A IV; B III; C II; D I
A II; B III; C IV; D I
A II; B IV; C III; D I
Algae
Fungi
Bryophytes
Pteridophytes
2 - 8, equal, apical
2, unequal, lateral
2 - 6, equal, lateral
Absent
Pyrenoids contain protein besides starch.
Sexual reproduction may be isogamous, oogamous and anisogamous in green and brown algae.
Some of the members of algae also occur in association with fungi (lichen) and animals (eg, on sloth bear).
The leaves in pteridophytes are well adapted to withstand extremes of temperature, humidity and wind.