MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Litmus is obtained from [Orissa JEE 2004] |
| A. | Lichen |
| B. | Algae |
| C. | Fungi |
| D. | Protozoa |
| Answer» B. Algae | |
| 2. |
Helotism is a term used for the symbiosis of [MHCET 2003] |
| A. | Algae and bacteria |
| B. | Algae and bryophytes |
| C. | Algae and pteridophytes |
| D. | Algae and fungi |
| Answer» E. | |
| 3. |
Mycorrhiza exhibits the phenomenon of [CBSE PMT 1994; BVP 2002] |
| A. | Antagonism |
| B. | Endemism |
| C. | Parasitism |
| D. | Symbiosis |
| Answer» E. | |
| 4. |
Mycorrhiza is a relationship of roots of Pinus and [BVP 2001; MHCET 2001] |
| A. | Fungus |
| B. | Alga |
| C. | Bacteria |
| D. | Ants |
| Answer» B. Alga | |
| 5. |
Which of the following symbiotic association is not useful as biofertilizer [MHCET 2002] |
| A. | Rhizobium and leguminous roots |
| B. | Algae and fungi |
| C. | Azolla and Anabaena |
| D. | Roots of higher plants and fungi |
| Answer» C. Azolla and Anabaena | |
| 6. |
Association of fungus with roots of tracheophytes is [BVP 2002] |
| A. | Mycorrhiza |
| B. | Commensalism |
| C. | Helotism |
| D. | Amensalism |
| Answer» B. Commensalism | |
| 7. |
Usnea is a [MHCET 2001] |
| A. | Fungus |
| B. | Bacterium |
| C. | Lichen |
| D. | Bryophyte |
| Answer» D. Bryophyte | |
| 8. |
In lichens, sexual reproduction belongs to [BHU 1994] |
| A. | Fungal partner only |
| B. | Algal partner only |
| C. | Fungal and algal partners (both) |
| D. | Either fungal partner or algal partner (not both) |
| Answer» B. Algal partner only | |
| 9. |
Reindeer moss is [AFMC 1996; RPMT 1999] |
| A. | Sphagnum |
| B. | Marchantia |
| C. | Cladonia rangifera |
| D. | None of these |
| Answer» D. None of these | |
| 10. |
Lichens are ecologically important as they [DPMT 1984] |
| A. | Purify air |
| B. | Are pioneers of barren rocks |
| C. | Are symbionts of algae and fungi |
| D. | Are associated with mycorrhizal roots |
| Answer» C. Are symbionts of algae and fungi | |
| 11. |
Lichens indicate \[S{{O}_{2}}\]pollution because they [CBSE PMT 1989; 92; BVP 2000] |
| A. | Show association between algae and fungi |
| B. | Grow faster than others |
| C. | Are sensitive to \[S{{O}_{2}}\] |
| D. | Flourish in \[S{{O}_{2}}\]rich environment |
| Answer» D. Flourish in \[S{{O}_{2}}\]rich environment | |
| 12. |
Lichens which seems to be something painted on the rocks is |
| A. | Crustose |
| B. | Foliose |
| C. | Fructicose |
| D. | Mycobiont |
| Answer» B. Foliose | |
| 13. |
Lichens grow at a very slow rate (1 mm per year). In how many years a lichen matures |
| A. | 1 - 4 years |
| B. | 4 - 8 years |
| C. | 100 years |
| D. | 20 - 25 years |
| Answer» C. 100 years | |
| 14. |
In mycorrhiza, the fungal hyphae |
| A. | Remain restricted to the root surface |
| B. | Remain restricted up to the root cortex |
| C. | Pass into the root interior |
| D. | Enter the root apex and reach all parts |
| Answer» C. Pass into the root interior | |
| 15. |
In majority of lichens, there is association of [CBSE PMT 2001] |
| A. | Green algae and ascomycetes |
| B. | Green algae and basidiomycetes |
| C. | Blue green algae and ascomycetes |
| D. | Blue green algae and basidiomycetes |
| Answer» D. Blue green algae and basidiomycetes | |
| 16. |
Lichen with branched system but small base is |
| A. | Fruticose |
| B. | Foliose |
| C. | Crustose |
| D. | Symbiont |
| Answer» B. Foliose | |
| 17. |
In ectomycorrhiza, the fungus is generally belong to |
| A. | Zygomycetes |
| B. | Phycomycetes |
| C. | Ascomycetes |
| D. | Basidiomycetes |
| Answer» E. | |
| 18. |
In endomycorrhiza, the fungus is commonly |
| A. | Zygomycetes |
| B. | Deuteromycetes |
| C. | Ascomycete |
| D. | Basidiomycete |
| Answer» B. Deuteromycetes | |
| 19. |
'Mycorrhizae' are useful for plants mainly due to their following attribute [CPMT 1994; BHU 1994, 2001; Pb. PMT 1999; DPMT 2003; CPMT 2004] |
| A. | Fixing atmospheric nitrogen |
| B. | Enhanced absorption of nutrients from soil |
| C. | Killing insects and pathogens |
| D. | Providing resistance against abiotic stresses |
| Answer» C. Killing insects and pathogens | |
| 20. |
Bipinnate leaves are characteristic of [AFMC 1981] |
| A. | Cruciferae |
| B. | Solanaceae |
| C. | Papilionoideae |
| D. | Mimosoideae |
| Answer» E. | |
| 21. |
Identify in order, the plants showing alternate, opposite and whorlled phyllotaxy [Kerala PMT 2005] |
| A. | China rose, Calotropis, Nerium |
| B. | China rose, Nerium, Calotropis |
| C. | Nerium, China rose, Calotropis |
| D. | Nerium, Calotropis, China rose |
| E. | Calotropis, Nerium, China rose |
| Answer» B. China rose, Nerium, Calotropis | |
| 22. |
The leaves the Utricularia plant are modified into [J & K CET 2005] |
| A. | Hooks |
| B. | Tendrils |
| C. | Bladders |
| D. | Pitchers |
| Answer» D. Pitchers | |
| 23. |
Leaves are situated on [AFMC 2003, CBSE PMT 2005] |
| A. | Nodes |
| B. | Internodes |
| C. | Tip |
| D. | None of these |
| Answer» B. Internodes | |
| 24. |
Isobilateral leaf is found in [BVP 2001] |
| A. | Dicots |
| B. | Monocots |
| C. | Hydrophytes |
| D. | Xerophytes |
| Answer» C. Hydrophytes | |
| 25. |
Leaf of which of the following plant shows circinate venation at young stage [MHCET 2004] |
| A. | Fern |
| B. | Mango |
| C. | Hydrilla |
| D. | Funaria |
| Answer» B. Mango | |
| 26. |
In Opuntia the spines are modification of [Pb. PMT 2004] |
| A. | Leaf |
| B. | Branch |
| C. | Epidermis |
| D. | Flower |
| Answer» B. Branch | |
| 27. |
Thorn is a modified branch because [Kerala PMT 2004] |
| A. | It is hard, straight and pointed |
| B. | It is a part of the plant |
| C. | It arises in the axil of a leaf |
| D. | It is a defensive organ |
| E. | It arises from the leaf base |
| Answer» D. It is a defensive organ | |
| 28. |
In Nepenthes the pitcher is modified [Kerala CET 2001; Tamil Nadu 2001; CET Chd. 2003] |
| A. | Whole leaf |
| B. | Leaf apex |
| C. | Lamina |
| D. | Petiole |
| Answer» D. Petiole | |
| 29. |
A dicotyledenous plant showing parallel venation is [BHU 1985] |
| A. | Dioscorea |
| B. | Smilax |
| C. | Calophyllum |
| D. | Hibiscus |
| Answer» D. Hibiscus | |
| 30. |
Bombax leaf is [Kerala CET 2000; Tamil Nadu 2001] |
| A. | Tripinnate |
| B. | Unipinnate |
| C. | Multifoliate |
| D. | Quadrifoliate |
| E. | Trifoliate |
| Answer» D. Quadrifoliate | |
| 31. |
Parallel venation occurs in [CPMT 1988; BVP 2000; Tamil Nadu 2001; Orissa JEE 2005] |
| A. | Monocots |
| B. | Dicots |
| C. | All angiosperms |
| D. | Ferns |
| Answer» B. Dicots | |
| 32. |
Phyllode is found in [CET Chd. 2003] |
| A. | Clematis |
| B. | Gloriosa |
| C. | Acacia |
| D. | Dischidia |
| Answer» D. Dischidia | |
| 33. |
Match the columns (i) Acicular (1) Grass (ii) Linear (2) Nerium (iii) Lanceolate (3) Banana (iv) Oblong (4) Pine [AMU 2002] |
| A. | (i) 4 (ii) 1 (iii) 2 (iv) 3 |
| B. | (i) 4 (ii) 1 (iii) 3 (iv) 2 |
| C. | (i) 4 (ii) 2 (iii) 3 (iv) 1 |
| D. | (i) 4 (ii) 3 (iii) 2 (iv) 1 |
| Answer» B. (i) 4 (ii) 1 (iii) 3 (iv) 2 | |
| 34. |
Spiral phyllotaxy in which sixth leaf lies above the first one after completing two circles is [APMEE 2002] |
| A. | Distichous |
| B. | Tristichous |
| C. | Pentastichous |
| D. | Octastichous |
| Answer» D. Octastichous | |
| 35. |
Ochreate stipules occur in leafy vegetable [APMEE 2002] |
| A. | Amaranthus |
| B. | Mentha |
| C. | Platanus |
| D. | Rumex |
| Answer» E. | |
| 36. |
Pinnately parallel venation is found in [Tamil Nadu 2001] |
| A. | Canna |
| B. | Grass |
| C. | Zizyphus |
| D. | Castor |
| Answer» B. Grass | |
| 37. |
Leaves are changed into spines in xerophytic structures called [CPMT 1996; Kerala PMT 2004] |
| A. | Phyllode |
| B. | Cladode |
| C. | Phylloclade |
| D. | All of these |
| Answer» C. Phylloclade | |
| 38. |
In some plants like Cotton, Eucalyptus leaves change their shape. This helps to know the |
| A. | Physical conditions of the plant |
| B. | Physiological maturity of plant |
| C. | Adaptability of plant |
| D. | Data insufficient to predict |
| Answer» C. Adaptability of plant | |
| 39. |
The old bladders in Utricularia are useless as they contain used debris of insects. The insects are digested inside leaf bladders where digestive glands secrete digestive juice. These glands are |
| A. | One celled |
| B. | Two celled |
| C. | Three celled |
| D. | Four celled |
| Answer» E. | |
| 40. |
Leaves arising from an underground stem like bulb are called radical leaves. The leaves arise on nodes of stem branches are called |
| A. | Cauline |
| B. | Ramal |
| C. | Caducous |
| D. | Deciduous |
| Answer» C. Caducous | |
| 41. |
In Banana, true stem is underground. The stem like structure outside soil is formed by |
| A. | Peduncle |
| B. | Petiole of leaves |
| C. | Leaf bases |
| D. | Overlapping of leaves |
| Answer» D. Overlapping of leaves | |
| 42. |
On the margins of leaves of a plant called Bryophyllum tiny plants grow complete with roots. These tiny plants fall of and continue to grow. This is a form of [NCERT 1975; AIEEE 2004] |
| A. | Hermophroditism |
| B. | Vegetative reproduction |
| C. | Sexual reproduction |
| D. | Reproduction by fission |
| Answer» C. Sexual reproduction | |
| 43. |
The arrangement and folding of each lamina without any relationship with other leaves in bud, is called [DPMT 1997] |
| A. | Ptyxis |
| B. | Vernation |
| C. | Aestivation |
| D. | Phyllotaxy |
| Answer» B. Vernation | |
| 44. |
Presence of leaves of more than one shape is common in amphibious plants (Helophytes) like Limnophila. This is called |
| A. | Heterozygosity |
| B. | Heterosis |
| C. | Heterophylly |
| D. | Phyllotaxy |
| Answer» D. Phyllotaxy | |
| 45. |
Interpetiolar stipules occur in |
| A. | Zizyphus |
| B. | Ixora |
| C. | Mangifera |
| D. | Polygonum |
| Answer» C. Mangifera | |
| 46. |
When leaves fall individually at different times it is called |
| A. | Caducous |
| B. | Deciduous |
| C. | Persistent |
| D. | Abscission |
| Answer» D. Abscission | |
| 47. |
Phyllodes are common among |
| A. | Malvaceae |
| B. | Papilionatae |
| C. | Mimosoideae |
| D. | Solanaceae |
| Answer» D. Solanaceae | |
| 48. |
In 1/2 distichous phyllotaxy |
| A. | 2nd leaf lies on 1st leaf at\[{{180}^{o}}\]angle |
| B. | 3rd leaf on 1st leaf at\[{{180}^{o}}\]angle |
| C. | 1st leaf lies exactly below 2nd leaf at 120° angle |
| D. | None of these |
| Answer» C. 1st leaf lies exactly below 2nd leaf at 120° angle | |
| 49. |
Presence of sheathing leaf base and ligule are characteristic of [BHU 1992; CET Chd. 1997] |
| A. | Cycas leaf |
| B. | Fern leaf |
| C. | Banana leaf |
| D. | Grass leaf |
| Answer» E. | |
| 50. |
Where will you get spiny stipules for protection against grazing animals |
| A. | Zizyphus |
| B. | Acacia |
| C. | Capparis |
| D. | All of these |
| Answer» E. | |