The pyrenoids are made up of
(1) Proteinaceous centre and starchy sheath
(2) Core of protein surrounded by fatty sheath
(3) Core of starch surrounded by sheath of protein
(4) Core of nucleic acid surrounded by protein sheath
Consider the following features:
I. Chlorophyll a and Chlorophyll c
II. Fucoxanthin
III. Floridean starch
IV. Flagella 2 in number, unequal and lateral
Which of these are seen in Phaeophyceae?
(1) I, II, III
(2) I, II, IV
(3) II, III, IV
(4) I, II, III, IV
The endosperm of a gymnosperm develops _______ fertilization, whereas the endosperm of an angiosperm develops _________ fertilization.
(1) before, before
(2) after, after
(3) after, before
(4) before, after
In Pinus,
I. The stem is branched
II. Roots have fungal association in the form of mycorrhiza
III. The male and female strobili are borne on different trees
Of the above statements:
(1) Only I is correct
(2) Only II is correct
(3) Only I and II are correct
(4) I, II and III are correct
Identify the incorrect statement:
1. The earliest systems of classification used only gross superficial morphological characters.
2. Linnaeus classification of plants was a natural classification as it was based on the androecium structure.
3. Artificial systems gave equal weightage to vegetative and sexual characteristics.
4. Natural classification systems are based on natural affinities among the organisms
Identify the incorrecty statement:
1. Numerical Taxonomy is based on all observable characteristics.
2. More weightage is given to reproductive characters and all other characters are given equal importance in numerical taxonomy.
3. Cytotaxonomy is based on cytological information like chromosome number, structure, behaviour
4. Chemotaxonomy uses the chemical constituents of the plant
Identify the incorrect statement regarding algae:
1. | At least a half of the total carbon dioxide fixation on earth is carried out by algae through photosynthesis. |
2. | Around 70 species of freshwater algae can be used as food. |
3. | Certain marine brown and red algae produce large amounts of hydrocolloids (water holding substances), e.g., algin (brown algae) and carrageen (red algae) which are used commercially. |
4. | Agar, obtained from Gelidium and Gracilaria are used to grow microbes and in preparations of ice-creams and jellies. |
What is not true for red algae?
1. Lack centriole and flagella
2. Accessory pigments include phycocyanin, phycoeythrin and allophycocyanin
3. They reproduce using alternation of generation
4. The stored food is floridean starch very similar to cellulose
Consider the following statements regarding bryophytes:
I. Bryophytes are also called amphibians of the plant kingdom because they are dependent on water for sexual reproduction.
II. They play an important role in plant succession on bare rocks.
III. They lack true roots, stem or leaves.
IV. The sex organs in bryophytes are multicelluar.
V. They produce biflagellate zoospres.
VI. Archegonium is flask-shaped and produces a single egg.
The number of corrected statements is
1. 3
2. 4
3. 5
4. 6
Which of the following statements regarding gymnosperms are correct?
I. Ovules are naked - not enclosed by any ovary wall before fertilisation but seeds that develop after fertilisation are covered.
II. In all living Gymnosperms, sporophyte is dominant over the gametophyte.
III. They are heterosporous.
IV. The male and female gametophytes do not have an independent existence.
1. I, II and III
2. I, III and IV
3. II, III and IV
4. I, II, III and IV
Which of the following algae is likely to be found in the deepest waters?
(1) Green
(2) Brown
(3) Red
(4) All are found at equal depths
The gemmae produced by some liverworts function as:
(1) A water gathering structure
(2) A light capturing structure
(3) A sexual structure
(4) An asexual structure
The life cycle is not haplo-diplontic in:
1. Bryophytes
2. Pteridophytes
3. Polysiphonia
4. Fucus
In mosses, the sex organs are seen in:
1. Protonema stage
2. Leafy stage
3. Capsule of the sporophyte
4. Seta of the sporophyte
Read the following five statements (I to V) and select the option with all correct statements.
I. Mosses and lichens are the first organisms to colonise a bare rock.
II. Selaginella is a homosporous pteridophyte.
III. Coralloid roots in Cycas have VAM.
IV. main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic.
V. In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.
(1) I, III and IV
(2) II, III and IV
(3) I, IV and V
(4) II, III and V
Life cycle of Ectocarpus and Fucus respectively are
(1) Haplontic, Diplontic
(2) Diplontic, Haplodiplontic
(3) Haplodiplontic, Diplontic
(4) Haplodiplontic, Haplontic
Conifers are adapted to tolerate extreme environmental conditions because of
(1) broad hardy leaves
(2) superficial stomata
(3) thick cuticle
(4) the presence of vessels
Male gametophyte with least number of cells is
(1) Pteris
(2) Funaria
(3) Lilium
(4) Pinus
Besides paddy fields, cyanobacteria are also found inside vegetative part of
(1) Pinus
(2) Cycas
(3) Equisetum
(4) Psilotum
Megasporangium is equivalent to
(1) embryo sac
(2) fruit
(3) nucellus
(4) ovule
Which one of the following is a correct statement?
1. | Pteridophyte gametophyte has a protonemal and leafy stage |
2. | In gymnosperms female gametophyte is free-living |
3. | Antheridiophores and archegoniophores are present in pteridophytes |
4. | Origin of seed habit can be traced in pteridophytes |
Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?
(1) Diplontic life cycle
(2) Members of kingdom-Plantae
(3) Mode of nutrition
(4) Multiplication by fragmentation
The gametophyte is not an independent, free living generation in
(1) Adiantum
(2) Marchantia
(3) Pinus
(4) Polytrichum
Male and female gametophytes are independent and free-living in
(1) mustard
(2) castor
(3) Pinus
(4) Sphagnum
Which one of the following is a vascular cryptogam?
(1) Equisetum
(2) Ginkgo
(3) Marchantia
(4) Cedrus
If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?
(1) Types of pigments present in the cell
(2) Nature of stored food materials in the cell
(3) Structural organisation of thallus
(4) Chemical composition of the cell wall
Moss peat is used as a packing material for sending flowers and live plants to distant places because:
(1) it is easily available
(2) it is hygroscopic
(3) it reduces transpiration
(4) it serves as a disinfectant
Monoecious plant of Chara shows occurrence of
(1) antheridiophore and archegoniophore on the same plant
(2) stamen and carpel on the same plant
(3) upper antheirdium and lower oogonium on the same plant
(4) upper oogonium and lower antheridium on the same plant
Male gametes are flagellated in
1. Polysiphonia
2. Anabaena
3. Ectocarpus
4. Spirogyra
Chlorophyll present in red algae is
1. | a, d | 2. | a, b |
3. | a, c | 4. | b, c |
Megasporophyll of Cycas has the same nature as
(1) stamen
(2) petal
(3) sepal
(4) carpel
Mossess and ferns are found in moist and shady places because both
(1) require presence of water for fertilization
(2) do not need sunlight for photosynthesis
(3) depend for their nutrition on microorganisms which can survive only at low temperature
(4) cannot compete with sun-loving plants
Which of the following are homosporous pteridophytes?
I. Selaginella
II. Lycopodium
III. Salvinia
IV. Equisetum
(1) I and IV only
(2) II and III only
(3) II and IV only
(4) III and IV only
Classical Taxonomy is based on
(1) morphological traits
(2) habitat of organisms
(3) similarities and dissimilarities of behaviour
(4) phylogeny
Match the columns.
|
Column - I |
|
Column - II |
A. |
Hornwort |
1. |
Lycopodium |
B. |
Liverwort |
2. |
Ricciocarpus |
C. |
Stonewort |
3. |
Anthoceros |
D. |
Club moss |
4. |
Chara |
|
A |
B |
C |
D |
(1) |
2 |
3 |
4 |
1 |
(2) |
2 |
3 |
1 |
4 |
(3) |
3 |
2 |
1 |
4 |
(4) |
3 |
2 |
4 |
1 |
The earliest system of classification does not include which of the following features?
(1) Habit, color, number and shape of leaves
(2) Gross morphology, androecium structure
(3) Vegetative structure
(4) Phytochemistry
Why are reproductive characters given more weightage during advanced classification?
(1) Vegetative characters are more or less constant over the generation
(2) Reproductive characters are less constant over the generation
(3) Vegetative characters are easy to get affected by environment
(4) Reproductive characters are more or less constant over the generation
George Bentham and Joseph Hooker gave the classification based on
1. Artificial system
2. Natural system
3. Phlogenetics
4. Numerical system
Phylogenetic classification systems based on
(1) Evolutionary relationships between the various organism
(2) Organisms belonging to the same taxa may have a different ancestor
(3) Both A and B
(4) Based on cytological information like chromosome number, structure, behavior.
Which of the following is an example of anisogamous reproduction in Algae?
(1) Eudorina
(2) Volvox
(3) Fucus
(4) Spirogyra
Chloroplasts can be discoid, plate-like, reticulate, cup-shaped, spiral or ribbon-shaped in different species. Such variety can be found in
(1) Chlorophyceae
(2) Phaeophyceae
(3) Rhodophyceae
(4) All of these
Green algae usually have a rigid cell wall made of an inner layer of ….…. and outer layer of ………
(1) Pectose, Cellulose
(2) Cellulose, Pectose
(3) Algin, carrageenan
(4) Carrageen, Algin
Zoospore formed during asexual reproduction in chlorophyceae are
(1) Flagellated
(2) Non-flagellated
(3) Ciliated
(4) Non ciliated
This picture is associated with an organism that belongs to a class. Which of the following features is not correct about that class?
(1) Three types of sexual reproduction
(2) A variety of chloroplast in different species
(3) Inner pectose and outer cellulose in cell wall
(4) Pigments-choorophyll a and chlorophyll b