Biology
Plant Biology and Classification
1,796 Questions
Plant Biology and Classification deals with the taxonomy, evolution, and morphological features of the plant kingdom. This collection offers practice questions on plant groups, taxonomic hierarchies, and specific plant characteristics. The questions are tailored for students preparing for biology competitive exams.
Plant taxonomyPteridophytesAngiospermsPlant morphologyAlgae and bryophytesClassification systems
Plant Biology and Classification Questions
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Discelium
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Diphyscium
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Colura zoophaga
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Folioceros
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Ptilidium ciliare
C
Correct answer
Explanation
Colura zoophaga is a small epiphytic liverwort . It possesses elongated water sacs formed by the fusion of the upper leaf margin rolling inward down to the rest of the leaf. A funnel-shaped channel at the lower leaf margin leads to a small opening into the water sac and is covered by a movable lid that only open inward. It is because of this bladder-like configuration that these traps have been compared to those of Utricularia.
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Flabellidium spinosum
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Flatbergium sericeum
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Fontinalis
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Funaria hygrometrica
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Hygrohypnum styriacum
A
Correct answer
Explanation
Flabellidium spinosum was a species of moss in the Brachytheciaceae family. It was endemic to Bolivia. It is also known as the Santa Cruz Bryophyte.
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Coralline algae
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Claudea
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Plocamium
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Rhodoliths
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Nori
A
Correct answer
Explanation
Coralline algae are red algae in the order Corallinales. They are characterised by a thallus that is hard because of calcareous deposits contained within the cell walls. The colours of these algae are most typically pink, or some other shade of red, but other species can be purple, yellow, blue, white or gray-green.
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C. merolae
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A. hypnoides
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Galaxaura
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Gelidiella
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Nemalion
A
Correct answer
Explanation
C. merolae is a club-shaped, unicellular red algae that lives in highly acidic environments and in warm conditions. Merolae has a single chloroplast and a single mitochondrion, but lacks a vacuole and a cell wall. The organism's genome was the first full algal genome to be sequenced in 2004. Its plastid was sequenced in 2000, 2003 and its mitochondrion in 1998.
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Adalbert Geheeb
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Edward Wilber Berry
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Johann Reinhold Forster
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Viktor Ferdinand Brotherus
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William Mitten
E
Correct answer
Explanation
William Mitten was the premier bryologist in the second half of the nineteenth century. A pharmaceutical chemist by trade and never a professional botanist, he classified and named thousands of bryophyte specimens which came into Kew Gardens from around the vast British empire.
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The geological record of the thallophytes is incomplete.
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The simplest thallophytes include sulphur containing bacteria.
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The final class of the thallophyta is the fungi.
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The second subphylum of the thallophytes is called the heterophytic thallophytes.
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All the thallophytes produce chlorophyll.
B
Correct answer
Explanation
The thallophytes are in the most primitive plants, lacking roots, stems, leaves, and conducting cells. The simplest thallophytes are in the subphylum of autophytic thallophytes, which include blue-green bacteria (or cyanobacteria, formerly known as blue-green algae), diatoms, and algae.
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Angiopteris evecta
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Adiantum tenerum
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Asplenium listeri
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Asplenium polyodon
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Blechnum procerum
C
Correct answer
Explanation
Asplenium listeri, commonly known as the Christmas Island Spleenwort, is a species of fern in the Aspleniaceae family. It is endemic to Christmas Island, an Australian territory in the north-eastern Indian ocean.
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Selaginella Lepidophylla
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Corpse Lily
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Living Rocks
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Venus Fly Traps
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Ball Moss
A
Correct answer
Explanation
Also called resurrection fern this autotroph is interesting in that it appears to resurrect from the dead. It lives in very dry climates and when there is a lack of water, it shrivels up into a grey ball and can stay like this for a number of years. When it finally rains, the resurrection fern grows and turns green.
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Chara
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Hydrodictyon
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Chlorella
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Spirogyra
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Filamentous
A
Correct answer
Explanation
Chara often grows at the bottom of lakes in fresh and also some brackish waters one to six metres deep. Chara is common in freshwater areas with silty or sandy beds. It is usually more noticed in droughts when the water level drops.
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Pistia
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Orchids
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Rhizophora
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Cuscuta
C
Correct answer
Explanation
Rhizophora grows in marshy areas and its roots are modified to perform respiratory functions.
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Vegetative reproduction-Bryophyllum
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Symbiosis-Rhizobium
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Hygroscopic-Somneratia
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Floating and Balancing-Pistia
C
Correct answer
Explanation
Somneratia roots are not modified to perform hygroscopic function. They perform respiratory function.
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Saprophytes
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Halophytes
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Acrophyte
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Pterophyte
B
Correct answer
Explanation
Plants which bears pneumatophores are called Halophytes
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Sugar
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Starch grain
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Fat droplet
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Water
B
Correct answer
Explanation
Root cap possesses starch grains.
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Chlamydomonas is a unicellular alga.
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Volvox form cuboidal colonies up to 50,000 cells in number.
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Ulothrix and spirogyra are filamentous algae.
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Asexual reproduction in algae is carried out by the production of zoospores.
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Chlamydomonas is an anisogamous alga.
B
Correct answer
Explanation
Volvox form spherical colonies up to 50,000 cells in number. The colonies live in fresh water habitat.
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Mollusca
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Lichens
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Greasewood
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Euhrychiopsis lecontei
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Stoneflies
D
Correct answer
Explanation
Euhrychiopsis lecontei and its assumed keystone effects on aquatic plant species diversify by foraging on nuisance Eurasian Watermilfoil.