Plant Kingdom Chapter-Wise Test 16

Correct answer Carries: 4.

Wrong Answer Carries: -1.

What is the ploidy level of primary endosperm nucleus in angiosperms?

Haploid
Diploid
Triploid
Tetraploid
3

The primary endosperm nucleus in angiosperms is triploid (3n) due to the fusion of a male gamete with two polar nuclei.

Which part of the bryophyte sporophyte produces spores?

Rhizoids
Seta
Capsule
Gemma cup
3

In bryophytes, the capsule is part of the sporophyte that produces haploid spores through meiosis.

Which of the following statements about gymnosperms is incorrect?

Gymnosperms have tap roots, often with mycorrhizal associations.
The seeds in gymnosperms are naked and not covered post-fertilization.
Gymnosperms produce a pollen tube that grows towards the archegonia.
The female gametophyte in gymnosperms is free-living and photosynthetic.
4

The female gametophyte in gymnosperms is retained within the megasporangium, not free-living.

What is the primary function of the air bladders in brown algae like Sargassum?

Reproduction
Buoyancy
Photosynthesis
Anchorage
2

Air bladders in brown algae (e.g., Sargassum) provide buoyancy, helping the blades float near the surface for photosynthesis.

Which of the following statements about Chlorophyceae is correct?

Chlorophyceae store food as laminarin and mannitol.
The dominant pigments in Chlorophyceae are chlorophyll a and b.
Chlorophyceae are primarily marine brown algae.
Sexual reproduction in Chlorophyceae is always oogamous.
2

Chlorophyceae, or green algae, have chlorophyll a and b as their dominant pigments.

Which type of root association is found in Pinus for nitrogen fixation?

Coralloid roots
Mycorrhiza
Taproots
Adventitious roots
2

Pinus forms a mycorrhizal association where fungi help in nutrient absorption and nitrogen fixation.

Which of the following statements about Phaeophyceae is correct?

Phaeophyceae are unicellular algae found in freshwater only.
Kelps, a type of Phaeophyceae, can reach heights of 100 meters.
Their zoospores lack flagella entirely.
The dominant pigment in Phaeophyceae is chlorophyll b.
2

Kelps, which are brown algae (Phaeophyceae), can grow massively, reaching up to 100 meters.

In gymnosperms, which part forms the pollen chamber?

Ovule
Megasporophyll
Micropyle
Integument
1

The pollen chamber is a cavity within the ovule of gymnosperms where pollen grains collect before fertilization.

Which division of algae includes species with discoid, cup-shaped, and spiral chloroplasts?

Chlorophyceae
Phaeophyceae
Rhodophyceae
Xanthophyceae
1

Chlorophyceae (green algae) have chloroplasts of various shapes, including discoid, cup-shaped, and spiral.

Which of the following statements about Rhodophyceae is correct?

Rhodophyceae have flagellated zoospores for asexual reproduction.
Porphyra, a red alga, is used as food.
Rhodophyceae store food as mannitol and laminarin.
The dominant pigment in Rhodophyceae is chlorophyll b.
2

Porphyra, a member of Rhodophyceae, is one of the marine algae used as food.

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