Plant Kingdom Chapter-Wise Test 6

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following statements about liverworts is incorrect?

Liverworts can have leafy members with tiny leaf-like appendages.
The archegonium in liverworts is flask-shaped and produces one egg.
Liverworts reproduce sexually by fusion of motile and non-motile gametes.
The sporophyte in liverworts is diploid and produces haploid spores.
3

In liverworts, the male gamete (antherozoid) is motile, but the egg is non-motile; the statement implies both gametes’ motility is incorrect.

Which group of algae produces carrageenan, a commercial hydrocolloid?

Chlorophyceae
Phaeophyceae
Rhodophyceae
Xanthophyceae
3

Rhodophyceae (red algae) produce carrageenan, which is used as a thickener in various food products.

Which structure in brown algae functions as the main site for photosynthesis?

Holdfast
Stipe
Blade
Air bladder
3

In brown algae (e.g., Laminaria), the blade functions as the primary photosynthetic organ.

Which of the following algae has a filamentous body structure?

Volvox
Ulothrix
Chlorella
Gelidium
2

Ulothrix, a green alga, has a filamentous thallus structure.

Which of the following statements about Phaeophyceae is correct?

Phaeophyceae lack chlorophyll and rely on phycoerythrin.
Their plant body can reach heights of 100 meters in kelps.
Phaeophyceae store food as floridean starch.
All Phaeophyceae are unicellular and microscopic.
2

Kelps, a type of Phaeophyceae, can grow up to 100 meters, forming massive plant bodies.

Which of the following methods is used in numerical taxonomy?

Studying chromosome structure
Assigning numbers and codes to characters
Analyzing evolutionary history
Studying chemical constituents
2

Numerical taxonomy uses numbers and codes for all observable characters, processed by computers to classify organisms objectively.

Which of the following statements about bryophytes is incorrect?

Bryophytes are attached to the substratum by rhizoids.
The sporophyte in bryophytes derives nourishment from the gametophyte.
Bryophytes reproduce sexually without water.
Bryophytes include mosses and liverworts.
3

Bryophytes depend on water for sexual reproduction, as antherozoids swim to the archegonium.

Which of the following statements about pteridophytes is correct?

Pteridophytes lack vascular tissues and have a dominant gametophyte.
The sporophytes in pteridophytes bear sporangia on sporophylls.
Pteridophytes produce seeds enclosed in fruits.
The prothallus in pteridophytes is diploid and spore-producing.
2

The sporophytes in pteridophytes bear sporangia on leaf-like sporophylls, which produce spores.

Which part of the moss plant develops into the gametophyte?

Zygote
Protonema
Sporangium
Capsule
2

In mosses, the protonema, which develops from spores, gives rise to the leafy gametophyte.

Which taxonomic approach utilizes chromosome structure, number, and behavior for classification?

Numerical taxonomy
Cytotaxonomy
Chemotaxonomy
Artificial taxonomy
2

Cytotaxonomy uses cytological information such as chromosome number, structure, and behavior to classify organisms.

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