Plant Kingdom Chapter-Wise Test 13

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following statements about Phaeophyceae is incorrect?

Phaeophyceae are brown algae found mainly in marine habitats.
They contain chlorophyll a, c, and fucoxanthin.
Their cell walls are made of cellulose and algin.
Phaeophyceae reproduce sexually only by isogamy.
4

Phaeophyceae exhibit isogamous, anisogamous, or oogamous sexual reproduction, not only isogamy.

Which term describes the direct development of a new plant from a vegetative cell without spore formation?

Fragmentation
Budding
Apospory
Apogamy
3

Apospory is the formation of a gametophyte directly from sporophytic cells without spore formation.

Which of the following statements about Rhodophyceae is incorrect?

Rhodophyceae can occur at great depths in oceans.
Their thalli are mostly multicellular with complex organization.
The cell wall of Rhodophyceae contains cellulose, pectin, and polysulphate esters.
Rhodophyceae reproduce sexually by isogamous fusion of gametes.
4

Sexual reproduction in Rhodophyceae is oogamous, not isogamous, involving non-motile gametes.

Which class of algae produces hydrocolloids like algin?

Chlorophyceae
Phaeophyceae
Rhodophyceae
Xanthophyceae
2

Phaeophyceae (brown algae) produce hydrocolloids like algin, which are commercially important.

Which of the following statements about bryophytes is incorrect?

Bryophytes lack true roots and have rhizoids instead.
Some bryophytes provide packing material due to water-holding capacity.
Bryophytes possess xylem and phloem for water transport.
Bryophytes include mosses found in shaded hills.
3

Bryophytes lack vascular tissues like xylem and phloem, unlike pteridophytes and gymnosperms.

Which of the following statements about liverworts is incorrect?

Liverworts have a thalloid, dorsiventral plant body.
Asexual reproduction occurs via gemmae in gemma cups.
The sporophyte in liverworts is free-living and photosynthetic.
Liverworts grow in moist, shady habitats.
3

The sporophyte in liverworts is not free-living; it is attached to the gametophyte and derives nourishment from it.

Which of the following statements about pteridophytes is correct?

Pteridophytes lack vascular tissues and rely on diffusion.
Some pteridophytes are used for medicinal purposes.
Pteridophytes have needle-like leaves to reduce water loss.
All pteridophytes grow in sunny, dry conditions.
2

Pteridophytes are used for medicinal purposes and as soil-binders, as noted in the PDF.

Which of the following statements about gymnosperms is incorrect?

Gymnosperms include tall trees like Sequoia.
The leaves of gymnosperms are adapted to reduce water loss.
Gymnosperms produce seeds enclosed within an ovary wall.
The pollen grains develop within microsporangia.
3

Gymnosperms have naked seeds not enclosed by an ovary wall, unlike angiosperms.

Which stage of a moss develops directly from a spore?

Protonema
Gametophyte
Sporophyte
Antheridium
1

The protonema is the first stage in moss development, emerging directly from the spore.

Which of the following statements about gymnosperms is incorrect?

Gymnosperms have naked seeds not enclosed by an ovary wall.
The female gametophyte in gymnosperms is retained within the megasporangium.
Gymnosperms produce flowers as their reproductive structures.
Some gymnosperms, like Pinus, have mycorrhizal roots.
3

Gymnosperms do not produce flowers; flowers are a characteristic feature of angiosperms.

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