The unique feature of bryophytes compared to other plant groups is that
they produce spores.
they lack vascular tissues.
they lack roots.
their sporophyte is attached to the gametophyte.
Correct Answer :
D. their sporophyte is attached to the gametophyte.
In bryophytes, zygotes donot undergo reduction division immediately. They produce a multicellular body called a sporophyte. The sporophyte is not a free-living but attached to the photosynthetic gametophyte and derives nourishment from it.
Related Questions
Chemotaxonomy is connected with
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.
Match the classes of pteridophytes given in column I with their examples given in column II and choose the correct option
| 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
Angiosperms have dominated the land flora primarily because of their
power of adaptability in diverse habitat.
property of producing large number of seeds.
nature of self pollination.
domestication of man.
Which one of the following statement concerning the algae is incorrect ?
Most algae are photosynthetic.
Algae can be classified according to their pigments.
All algae are filamentous.
Spirogyra does not produce zoospores.
Laminaria (Kelp) and Fucus (Rock weed) are examples of
green algae
brown algae
red algae
golden brown algae
Which one of the following term is correctly matched with their definition in Pinus ?
Monoecious Male (microsporangiate) and female (megasporangiate) cones are produced on same plant.
Monoecious Male and female sporophylls borne on same strobilus.
Dioecious Male and female cones are produced on different plants.
Monoecious Micro and megasporocarp develop on same plant.
A universal feature of the life cycle of plants is
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
A bryophyte differs from pteridophytes in having
archegonia.
lack of vascular tissue.
swimming antherozoids.
independent gametophytes.
Protonema and leafy stage are the predominant stage of the life cycle of
moss
dicots
liverwort
gymnosperm
A research student collected certain alga and found that its cells contained both chlorophyll a and chlorophyll d as well as phycoerythrin on the basis of his observation the students conclude that the alga belongs to
rhodophyceae
bacillariophyceae
chlorophyceae
phaeophyceae
If there are 4 cells in anther, what will be the number of pollen grains?
8
4
16
12
Which of the following statements with respect to algae are correct.
(i) Fusion between one large, non-motile female gamete and a smaller, motile male gamete is termed as oogamous.
(ii) Fusion of two gametes dissimilar in size is termed as oogamous.
(iii) Fusion of two gametes similar in size is called anisogamous.
(iv) In chlorophyceae, the major pigments are chlorophyll a and b , and the food is stored as starch.
(v) In rhodophyceae, the major pigments are chlorophyll a and d , and the food is stored as mannitol.
(i) and (v)
(iii) and (v)
(i) and (ii)
(i) and (iv)
Fusion of two gametes which are dissimilar in size is termed as _______.
isogamous
oogamous
anisogamous
agamous
Match column-I with column-II and select the correct answer using the codes given below.
| Column-I | Column-II |
|---|---|
| (Group of Planet Kingdom) | (Examples) |
| A. Algae | I. Solanum tuberosum |
| B. Fungi | II. Equisetum |
| C. Angiosperm | III. Cycas |
| D. Pteridophyte | IV. Chlamydomonas |
| E. Gymnosperm | V. Rhizopus |
A V; B IV; C I; D II; E III
A IV; B V; C I; D II; E III
A IV; B I; C V; D II; E III
A IV; B I; C V; D III; E II
Select the correct match of the feature present in column I with its respective terms given in column II.
| Column-I | Column-II |
|---|---|
| A. Presence of tap roots | (i) Bryophyte and coralloid roots |
| B. The synergids and | (ii) Pteridophytes antipodal cells degenerates after fertilization |
| C. The food is stored as | (iii) Red algae floridean starch which is very similar to amylopectin and glycogen in structure |
| D. Presence of sporophyte | (iv) Angiosperms which is not free living but attached to the photosynthetic gametophytes and derives nourishment from it |
| E. Members of this group | (v) Gymnosperms are used for medicinal purposes, as soil binders and frequently grown as ornamentals |
A-i B-ii C-iii D-iv E-v
A-iii B-v C-ii D-iv E-i
A-iii B-i C-v D-ii E-iv
A-v B-iv C-iii D-i E-ii
_______ represent the reproductive organs amongst gymnosperms.
Prothallus
Capsules
Setae
Cones
Which of the following branch of science is being described by the given statements ?
(i) It can easily done by using computers based on all observable characters.
(ii) Numbers and codes are assigned to all the characters and the data are then processed.
(iii) Each character is given equal weightage and at the same time hundred of characters can be considered.
Cytotaxonomy
Numerical taxonomy
Chemotaxonomy
??-taxonomy
Algin, carrageen and proteins are obtained from
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.
In class phaeophyceae, the plant body is usually attached to the substratum by a A and has a stalk, the B and leaf like photosynthetic organ-the C .
A holdfast, B stipe, C frond
A stipe, B holdfast, C frond
A frond, B stipe, C holdfast
A stipe, B frond, C holdfast
Match column-I with column-II and choose the correct option.
| 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
If the cells of root in wheat plant have 42 chromosomes, then the no. of chromosome in the cell of pollen grain is
14
21
28
42
Which one of the following is the major difference between mosses and ferns ?
Ferns lack alternation of generation while mosses show the same.
Mosses are facultative aerobes while ferns are obligate aerobes.
Vascular bundles of ferns show xylem vessels while those of mosses lack it.
Sporophytes of ferns live much longer as compared to the sporophytes of mosses.
What is common in all the three, Funaria, Dryopteris and Ginkgo?
Independent sporophyte
Presence of archegonia
Well developed vascular tissues
Independent gametophyte
Which of the following pteridophytes belong to class pteropsida?
Equisetum and Psilotum
Lycopodium and Adiantum
Selaginella and Pteris
Pteris and Adiantum
Which of the following statement(s) is incorrect about mosses ?
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
Cytological information like chromosome number, structure, behaviour are related with
numerical taxonomy
cytotaxonomy
chemotaxonomy
all of the above
Which of the following, examples belongs to the same class of algae?
Chara, Fucus, Polysiphonia
Volvox, Spirogyra, Chlamydomonas
Porphyra, Ectocarpus, Ulothrix
Sargassum, Laminaria, Gracilaria
In angiosperms, a mature male gametophyte is derived from a pollen mother cell by
three mitotic divisions.
one meiotic and two mitotic divisions.
two meiotic divisions.
a single meiotic division.
Which of the following group of plant is being described by the given statements ?
(i) They are plants in which the ovules are not enclosed by any ovary wall and remain exposed before and after fertilization.
(ii) The giant red wood tree Sequoia is one of the tallest tree species of the group.
(iii) The roots are generally tap roots.
(iv) They are heterosporous and they produce haploid microspores and megaspores.
Algae
Bryophytes
Gymnosperms
Pteridophytes
Statement 1: Double fertilization is a characteristic feature of angiosperms.
Statement 2: Double fertilization involves two fusions.
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.