Plant Kingdom Chapter-Wise Test 14

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Who proposed the Five Kingdom classification system?

Carolus Linnaeus
George Bentham
Robert Whittaker
Joseph Hooker
3

Robert Whittaker proposed the Five Kingdom classification system, which includes Monera, Protista, Fungi, Animalia, and Plantae.

Which of the following statements about Chlorophyceae is incorrect?

Chlorophyceae are grass-green due to chlorophyll a and b.
Their chloroplasts can be discoid, spiral, or ribbon-shaped.
Chlorophyceae store food only as oil droplets.
Asexual reproduction occurs via flagellated zoospores.
3

Chlorophyceae store food as starch in pyrenoids, though some may also store it as oil droplets.

Which structure in gymnosperms contains the female gametophyte?

Ovule
Pollen grain
Antheridium
Sporophyll
1

In gymnosperms, the ovule contains the female gametophyte, which produces archegonia and eggs.

Which of the following statements about gymnosperms is incorrect?

Gymnosperms include shrubs and tall trees like Sequoia.
Some gymnosperms have coralloid roots with N₂-fixing cyanobacteria.
Gymnosperms possess true flowers for reproduction.
The stems in gymnosperms can be branched or unbranched.
3

Gymnosperms lack true flowers; they reproduce via cones, unlike angiosperms.

Which type of gametophyte is formed in heterosporous pteridophytes?

Unisexual gametophyte
Bisexual gametophyte
Triploid gametophyte
Multinucleate gametophyte
1

Heterosporous pteridophytes produce two types of spores—microspores (male) and megaspores (female)—resulting in unisexual gametophytes.

Which of the following statements about gymnosperms is correct?

Gymnosperms lack a female gametophyte within the megasporangium.
The pollen tube in gymnosperms carries male gametes to the archegonia.
Gymnosperms produce fruits enclosing their seeds.
All gymnosperms have unbranched stems.
2

The pollen tube in gymnosperms grows towards the archegonia, carrying male gametes for fertilization.

Which pteridophyte structure is analogous to flowers in seed plants?

Prothallus
Strobilus
Sporangium
Gemma cup
2

In pteridophytes, the strobilus is a compact structure of sporophylls that bears sporangia, analogous to flowers in seed plants.

Which feature of gymnosperm pollen grains aids in wind dispersal?

Thick exine
Sporopollenin coating
Wing-like structures
Sticky stigma
3

Gymnosperm pollen grains often have wing-like structures (air sacs) to facilitate wind dispersal.

Which division of algae is characterized by the storage of starch in pyrenoids?

Chlorophyceae
Phaeophyceae
Rhodophyceae
Xanthophyceae
1

Chlorophyceae (green algae) store food as starch in structures called pyrenoids within their chloroplasts.

What type of gametes are involved in oogamous reproduction?

Morphologically similar and motile
Morphologically dissimilar, with a large non-motile egg and a small motile sperm
Identical and non-motile
Similar in size but different in behavior
2

In oogamous reproduction, a large, non-motile egg fuses with a small, motile sperm, as seen in Volvox and Fucus.

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