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Plant Kingdom Practice Questions

NEET · Biology · 1481 free MCQs with instant results and detailed explanations.

1481
Total
307
Easy
657
Medium
517
Hard

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Topics in Plant Kingdom

Gymnosperms 246
Pteridophytes 245
Bryophytes 249
Angiosperms 247
Algae 245
Life Cycles and Alternation of Generations 249

Sample Questions from Plant Kingdom

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Q1
Easy
Which of the following is not a characteristic feature of algae?
A. Photosynthetic pigments
B. Presence of true roots
C. Chlorophyll
D. Aquatic habitat
Show Answer & Explanation
Correct Answer: B
Algae lack true roots; they have structures for anchorage but not true roots.
Q2
Easy
Chlamydomonas is best classified as which type of algae?
A. Red algae
B. Green algae
C. Brown algae
D. Blue-green algae
Show Answer & Explanation
Correct Answer: B
Chlamydomonas is a unicellular organism classified under green algae due to its chlorophyll content.
Q3
Easy
Which pigment is primarily responsible for the green color in algae?
A. Carotenoids
B. Chlorophyll
C. Phycobilins
D. Xanthophylls
Show Answer & Explanation
Correct Answer: B
Chlorophyll is the main pigment that gives algae their green color and is essential for photosynthesis.
Q4
Medium
Which type of algae is known for its ability to produce oxygen through photosynthesis?
A. Chlorophyta
B. Rhodophyta
C. Phaeophyta
D. Cyanophyta
Show Answer & Explanation
Correct Answer: A
Chlorophyta, or green algae, are photosynthetic organisms that utilize chlorophyll to convert sunlight into energy, producing oxygen as a byproduct.
Q5
Medium
Which of the following algae is commonly used in the food industry as a thickening agent?
A. Red algae
B. Green algae
C. Brown algae
D. Cyanobacteria
Show Answer & Explanation
Correct Answer: A
Red algae, particularly those producing agar and carrageenan, are widely used in the food industry as thickening agents and stabilizers.
Q6
Medium
Which of the following algae are primarily found in marine environments?
A. Chlorophyta
B. Cyanophyta
C. Rhodophyta
D. Charophyta
Show Answer & Explanation
Correct Answer: C
Rhodophyta, or red algae, are mainly found in marine environments, especially in warmer waters, and can thrive at greater depths than other algae.
Q7
Medium
What pigment is primarily found in brown algae that gives them their characteristic color?
A. Chlorophyll a
B. Carotenoids
C. Fucoxanthin
D. Phycobilins
Show Answer & Explanation
Correct Answer: C
Fucoxanthin is the primary pigment in brown algae (Phaeophyta), contributing to their characteristic brownish color and absorbing light for photosynthesis.
Q8
Hard
Which of the following groups of algae is known for having a unique cell wall composition containing a mixture of cellulose and alginic acid?
A. Chlorophyta
B. Phaeophyta
C. Rhodophyta
D. Cyanophyta
Show Answer & Explanation
Correct Answer: B
Phaeophyta, or brown algae, have cell walls made of cellulose and alginic acid, making them distinct from other groups.
Q9
Hard
Which of the following algae is primarily responsible for the phenomenon known as red tide?
A. Chlamydomonas
B. Noctiluca
C. Scenedesmus
D. Euglena
Show Answer & Explanation
Correct Answer: B
Noctiluca is a type of dinoflagellate algal species that causes red tides due to its high population density and pigment production.
Q10
Hard
Which of the following algae exhibits isomorphic alternation of generations?
A. Ulva
B. Sargassum
C. Fucus
D. Spirogyra
Show Answer & Explanation
Correct Answer: A
Ulva, commonly known as sea lettuce, shows isomorphic alternation of generations, where both stages (gametophyte and sporophyte) are morphologically similar.

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Plant Kingdom — NEET Biology Practice Questions Online

This page contains 1481 practice MCQs for the chapter Plant Kingdom in NEET Biology. The questions are organized by difficulty — 307 easy, 657 medium, 517 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 6 topics, giving you comprehensive coverage of the entire chapter.