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NEET • BIOLOGY • PLANT KINGDOM

Plant kingdom practice · Mixed difficulty

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Showing 361-390 of 401 questions

361 Hard

361 of 401

Understanding +4 | -1

Consider the following statements regarding gymnosperms and choose the correct option.
I. In gymnosperms, the male and female gametophytes have an independent existence.
II. The multicellular female gametophyte is retained within the megasporangium.
III. The gymnosperms are hterosporous.
Of these statements

View answer and explanation

Correct option: D

II and III are true but I is false

Option D (II and III are true but I is false) is correct because in gymnosperms, the male gametophyte is dependent, the female gametophyte is retained within the megasporangium, and gymnosperms are heterosporous.

362 Medium

362 of 401

Remembering +4 | -1

Chloroplasts of Spirogyra have

View answer and explanation

Correct option: C

Smooth margin

Option C is correct because Spirogyra chloroplasts are ribbon-shaped and have a smooth margin.

363 Medium

363 of 401

Understanding +4 | -1

Which one is not the feature of Cycas?

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Correct option: D

Archegonia is absent

Option D (Archegonia is absent) is correct because Cycas possesses archegonia as a part of its female reproductive structure.

364 Medium

364 of 401

Understanding +4 | -1

The unique feature of bryophytes compared to other green plant group is that

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Correct option: D

There sporophytes is attached to the gametophyte

Option D (There sporophytes is attached to the gametophyte) is correct because the sporophyte in bryophytes is nutritionally dependent on the gametophyte.

365 Medium

365 of 401

Understanding +4 | -1

In homosporous pteridophyte, the gametophyte is

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Correct option: B

Monoecious

Option B (Monoecious) is correct because homosporous pteridophytes typically have gametophytes that bear both male and female sex organs.

366 Medium

366 of 401

Understanding +4 | -1

Zygote is the only diploid body in the following plants (haploneic)
i) Volvox ii) Spirogyra iii) Chlamydomonas iv) Ectocarpus

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Correct option: D

i, ii, iii

Option D (i, ii, iii) is correct because Volvox, Spirogyra, and Chlamydomonas all have a haplontic life cycle where the zygote is the only diploid stage.

367 Medium

367 of 401

Understanding +4 | -1

Pteridophytes differ from bryophytes in the

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Correct option: B

Vasculature

Option B (Vasculature) is correct because pteridophytes have vascular tissue (xylem and phloem), while bryophytes do not.

368 Easy

368 of 401

Remembering +4 | -1

In Class Phaeophyceae the reserve food is stored in the form of

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Correct option: A

Laminarin

Option A (Laminarin) is correct because Laminarin is the characteristic storage polysaccharide in Phaeophyceae (brown algae).

369 Hard

369 of 401

Understanding +4 | -1

All of the following have directly evolved from Psilophyton, except

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Correct option: D

Seed ferns

Option D (Seed ferns) is correct because ferns, ginkgos, and conifers directly evolved from Psilophyton, while seed ferns are a separate evolutionary lineage.

370 Easy

370 of 401

Understanding +4 | -1

Assertion: Most algae show haplontic type of life
cycle.
Reason: A Fucus alga shows diplontic type of life
cycle.

View answer and explanation

Correct option: B

If both the assertion and reason are true but the
reason is not a correct explanation of the
assertion

Option B is correct because both the assertion and reason are true, but the reason does not explain the assertion. The life cycle of Fucus is independent of the life cycle of most algae.

371 Medium

371 of 401

Understanding +4 | -1

Pteridophytes differ from mosses/bryophytes in possessing

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Correct option: B

Well developed vascular system

Option B (Well developed vascular system) is correct because pteridophytes have xylem and phloem, while mosses/bryophytes lack a well-developed vascular system.

372 Hard

372 of 401

Understanding +4 | -1

[A]: In Selaginella/Pteris reduction division occurs during microspore formation only.

[R]: It was first shown by Zacharis and Strasburger in 1963.

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Correct option: D

Both A and R are false

Option D (Both A and R are false) is correct because reduction division (meiosis) occurs during spore formation in both Selaginella and Pteris, and the statement about Zacharis and Strasburger is irrelevant and likely incorrect.

373 Medium

373 of 401

Remembering +4 | -1

Which of the following is known as pond silk?

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Correct option: A

Spirogyra

Option A is correct because Spirogyra, a filamentous green alga, is commonly known as pond silk due to its silky texture.

374 Easy

374 of 401

Remembering +4 | -1

In green algae vegetative reproduction takes place by

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Correct option: C

Both (a) and (b)

Option C (Both (a) and (b)) is correct because green algae reproduce vegetatively through fragmentation and asexually through different types of spores.

375 Easy

375 of 401

Remembering +4 | -1

Megasporophyll is the term used in gymnosperm to denote

View answer and explanation

Correct option: A

Carpel

Option A is correct because megasporophyll in gymnosperms is analogous to the carpel in angiosperms, representing the female reproductive structure.

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ANIMAL KINGDOM 756 MCQs ANATOMY OF FLOWERING PLANTS 404 MCQs MOLECULAR BASIS OF INHERITANCE 404 MCQs CHEMICAL COORDINATION AND INTEGRATION 387 MCQs PRINCIPLE OF INHERITANCE AND VARIATION 374 MCQs EVOLUTION 362 MCQs

376 Easy

376 of 401

Understanding +4 | -1

Criteria like DNA base sequencing for classifying various organisms is considered in

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Correct option: C

Chemotaxonomy

Option C (Chemotaxonomy) is correct because DNA base sequencing is a biochemical characteristic used in chemotaxonomy for classifying organisms.

377 Easy

377 of 401

Understanding +4 | -1

Assertion: The earliest systems of classification used
only superficial morphological
characters
Reason: Artificial system gave equal weightage to
vegetative and sexual characterstics.

View answer and explanation

Correct option: B

If both the assertion and reason are true but the
reason is not a correct explanation of the
assertion

Option B (If both the assertion and reason are true but the reason is not a correct explanation of the assertion) is correct because both statements are true, but the reason doesn't explain why early systems used superficial characters.

378 Medium

378 of 401

Understanding +4 | -1

Which of the following is not correctly matched?

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Correct option: C

Floridean starch – stored food of brown algae

Option C (Floridean starch – stored food of brown algae) is not correctly matched because floridean starch is the stored food of red algae, not brown algae.

379 Easy

379 of 401

Remembering +4 | -1

Anther produces

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Correct option: A

Pollen grains

Option A (Pollen grains) is correct. The anther produces pollen grains, which contain the male gametes.

380 Hard

380 of 401

Remembering +4 | -1

The thallus of Volvox is called

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Correct option: B

Coenobium

Option B is correct because the colony of Volvox, consisting of many individual cells, is called a coenobium.

381 Medium

381 of 401

Understanding +4 | -1

Red algae differs from green and brown algae in?

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Correct option: C

Not having any flagellate stage

Option C (Not having any flagellate stage) is correct because red algae uniquely lack flagellated stages in their life cycle, unlike green and brown algae.

382 Hard

382 of 401

Understanding +4 | -1

Consider the following statements about bryophytes
I. Sexual reproduction is oogamous type
II. The sex organs are multicellular and jacketed with sterile jacket
III. The haploid gametophytes is dominant stage in the life cycle bryophytes
Which of the statements given above are correct?

View answer and explanation

Correct option: D

I, II and III

Option D (I, II and III) is correct because all three statements accurately describe characteristics of bryophytes: their sexual reproduction is oogamous, their sex organs are multicellular and jacketed, and their gametophyte is the dominant stage.

383 Medium

383 of 401

Analyzing +4 | -1

Assertion: In gymnosperms, stomata are found
on the surface of leaves.

Reason: Cuticle of leaves is thin in
gymnosperms.

View answer and explanation

Correct option: D

If both Assertion and Reason are false

Option D (If both Assertion and Reason are false) is correct. Gymnosperms have stomata, but they are often sunken, and the cuticle is thick, not thin.

384 Easy

384 of 401

Remembering +4 | -1

The amphibians of plant kingdom are

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Correct option: B

Bryophytes with simple internal organization

Option B (Bryophytes with simple internal organization) is correct because bryophytes are often referred to as the amphibians of the plant kingdom due to their dependence on water for reproduction and their simple tissue organization.

385 Hard

385 of 401

Remembering +4 | -1

Which of the following is a member of Phaeophyceae?

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Correct option: C

Laminaria

Option C (Laminaria) is correct because Laminaria is a well-known genus of brown algae, which belongs to the class Phaeophyceae.

386 Medium

386 of 401

Understanding +4 | -1

Bryophytes are also called ‘amphibians of the plant kingdom’ because

View answer and explanation

Correct option: C

These plants can live in soil but are dependent on water for sexual reproduction

Option C (These plants can live in soil but are dependent on water for sexual reproduction) is correct because bryophytes require water for the sperm to swim to the egg during fertilization, even though they can survive on land.

387 Medium

387 of 401

Understanding +4 | -1

Read the given explanation and select the correct option Explanation A: Each group of Algae has a characteristic colour Explanation R: Each group of Algae shows predominance of One pigment

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Correct option: C

Both explanations are correct

Option C (Both explanations are correct) is correct because algae groups have characteristic colors due to the predominance of specific pigments.

388 Medium

388 of 401

Understanding +4 | -1

Read the following statements and choose the option which is true for them
a) Dryopteris is horsetail b) Selaginella is heterosporous
c) Salvinia is aquatic plant

View answer and explanation

Correct option: A

b and c are correct

Option A (b and c are correct) is correct because Selaginella is heterosporous and Salvinia is an aquatic plant.

389 Easy

389 of 401

Remembering +4 | -1

Agar, one of the commercial products obtained from red algae is used

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Correct option: C

Both (a) and (b)

Option C (Both (a) and (b)) is correct because agar, derived from red algae, is used both as a solidifying agent in microbial culture media and in the preparation of ice creams and jellies.

390 Hard

390 of 401

Remembering +4 | -1

Which of the following plant cells is not surrounded by a cell wall?

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Correct option: C

Gamete cell

Option C (Gamete cell) is correct because gametes in plants (and animals) lack a cell wall, facilitating fusion during fertilization.

Revision notes and key takeaways

Review PLANT KINGDOM in your textbook or class notes, then use this set to check your understanding.

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