Carlous Linnaeus system is an artificial system because it is
1. Phylogenetic.
2. Based on evolutionary trends.
3. Based on number of characters.
4. Based on a few characters of superficial similarities and dissimilarities on morphology.
Domain Eukarya includes how many kingdoms (with respect to six kingdom system)?
1. Two
2. Three
3. One
4. Four
Select the incorrect statement.
1.Nostocand Anabaena have heterocysts for nigrogen fixation.
2. Cyanobacteria often form blooms in polluted water bodies.
3. Heterotrophic bacteria are more abundant in nature.
4. The cell walls of mycoplasma are made up of chitin.
Statement I : Bacterial structure and behaviour is very complex
Statement 2 : They show the most extensive metabolic diversity as a group
1. Only statement 1 is correct.
2. Only statement 2 is correct.
3. Both statement 1 and statement 2 are correct.
4. Both statement 1 and statement 2 are incorrect.
The smallest living cells have all known characteristics except
1. Survive in presence of oxygen.
2. Infect animals and plant.
3. Complete lack of cell membrane.
4. Contain dsDNA as genetic material.
Which of the following is a difference between eubacteria and archaebacteria?
1. They look very different from each other under microscope.
2. Eubacteria are autotrophic and archaebacteria are heterotrophic.
3. Archaebacteria are unicellular and eubacteria are colonial.
4. They have different chemicals in their cell membranes and cell walls.
Match Column-I with Column-II and choose the correct option
|
Column-I |
|
Column-II |
(a) |
Ex-situ conservation |
(i) |
Central National Herbarium |
(b) |
Quick referral system |
(ii) |
Museum |
(c) |
Preserved plants and animals |
(iii) |
Flora |
(d) |
Actual account of habitat and distribution of plants in a given area |
(iv) |
Royal Botanical Garden, Kew |
(1) (a) – (ii), (b) – (iii), (c) – (iv), (d) – (i)
(2) (a) – (i), (b) – (iv), (c) – (ii), (d) – (iii)
(3) (a) – (iv), (b) – (i), (c) – (iii), (d) – (ii)
(4) (a) – (iv), (b) – (i), (c) – (ii), (d) – (iii)
Which of the following statements are incorrect?
(i) Slime moulds in vegetative phase are surrounded by cell wall.
(ii) Slime moulds are obligate autotrophs.
(iii) Euglena behaves like heterotroph in absence of light predating smaller organism.
(iv) The fishes are killed by toxins released by slime moulds.
(v) Protists reproduce sexually by zygote formation.
(vi) Euglena has resemblance with plant and animal both.
1. (i), (ii) and (iii) 2. (ii), (iii) and (iv)
3. (i), (iii) and (vi) 4. (i), (ii) and (iv)
Following features belong to
(i) Appear yellow, green, brown, blue and red depending on pigment in cell.
(ii) Stiff cellulosic plates forms the cell wall.
(iii) One longitudinal and one transverse flagella present.
(iv) Photosynthetic
1. Diatoms 2. Desmids
3. Dinoflagellates 4.Euglenoids
Which of the following is an incorrect statement regarding fungi?
1. Wheat rust-causing agent is Puccinia.
2. Penicillium is a source of antibiotics.
3. The cell walls of fungi are composed of peptidoglycans.
4. Fungi prefer to grow in warm and humid places.
Dikaryotic stage is a characteristic of
1.Phycomycetes and ascomycetes.
2. Ascomycetes and basidiomycetes.
3.Phycomycetes and basidiomycetes.
4. Basidiomycetes and deuteromycetes.
Which of the following eukaryote is extensively used in experimental genetics?
1.E. coli
2.Alternaria
3.Ustilago
4.Neurospora
Sexual reproduction in fungus occurs in the following sequential event. Arrange them properly.
(i) | Fusion of two nuclei |
(ii) | Fusion of protoplasm between two motile or non-motile gametes. |
(iii) | Meiosis in zygote resulting in haploid spores. |
1. (i) – (ii) – (iii)
2. (ii) – (i) – (iii)
3. (iii) – (ii) – (i)
4. (iii) – (i) – (ii)
Select the correct statement
1.Viroids have double stranded RNA.
2. RNA of viroids has higher molecular weight than that of viruses.
3. Mumps and herpes are viral diseases.
4. The name virus was given by D.J. Ivanowsky.
Which of the following statement are incorrect with respect to lichens ?
(i) Algae protects fungus and fungus is parasite on algae.
(ii) Algae and fungi are in symbiotic association.
(iii) Lichens are pollution indicator.
(iv) Lichen represents the climax of plant succession.
1. (i) and (ii) 2. (i) and (iv)
3. (ii) and (iii) 4. (iii) and (iv)
In lichen, algal component is called______and fungal component is called ______
1.Mycobiont ;phycobiont
2.Phycobiont ;mycobiont
3.Phycobiont ; mycorrhiza
4.Mycorrhiza ;mycobiont
Which of the following are true for cyanobacteria?
(I) | They are freshwater/marine or terrestrial algae. |
(II) | Often form blooms in unpolluted water bodies |
(III) | Maybe unicellular, colonial, or filamentous. |
(IV) | Some of them fix atmospheric nitrogen. |
1. I, III, IV
2. I, II, III, IV
3. II, III, IV
4. I, II, IV
Which of the following is true for the reproduction of bacteria?
1. Reproduce mainly by fission.
2. Under unfavourable conditions, they produce spores.
3. Also reproduce by sort of sexual reproduction.
4. All of these
Which of the following are correct for viroids?
(I) Discovered by Pasteur.
(II) Smaller than viruses.
(III) Found to be free DNA.
(IV) Cause potato spindle tuber disease.
(V) Nucleic acid has high molecular weight.
1. I, III, IV
2. II, III, IV, V
3. II, IV
4. II, IV, V
What is absent in Euglenoids?
1. Two flagella, a short and a long one.
2. Pellicle, a protein-rich layer.
3. Pigments identical to those present in higher plants.
4. Cell wall with stiff cellulose plates.
Which of the following form the basis for the division of the kingdom fungi into various classes?
(I) | Mode of spore formation and fruiting bodies. |
(II) | Morphology of the mycelium. |
(III) | Mode of nutrition and occurrence. |
1. | I, II | 2. | I, III |
3. | II, III | 4. | Only I |
Identify A, B, and C in the given diagram:
A |
B |
C |
|
1 |
Sheath |
Head |
Collar |
2 |
Collar |
Head |
Sheath |
3 |
Sheath |
Collar |
Head |
4 |
Head |
Collar |
Sheath |
Paramecium and Amoeba are placed in kingdom protista with
1. Anabaena and Colletotrichum
2. Anabaena and Chlorella
3. Chlamydomonas and Colletotrichum
4. Chlorella and Chlamydomonas
Which of the following is not the characteristic of the class to which Mucor belongs?
1. Mycelium is aseptate and coenocytic
2. Zygospore is formed by fusion of two gametes
3. Asexual reproduction takes place by zoospores or aplanospores
4. Gametes are always dissimilar in morphology
Earlier classification systems included bacteria, blue green algae, fungi, mosses, ferns, gymnosperms and angiosperms under plants. The character that unified this whole kingdom was that all the organisms included had
1. Cell wall in their cells
2. Nuclear membrane in their nucleus
3. Autotrophic nutrition
4. All of these