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NEET • BIOLOGY • PLANT KINGDOM

Plant kingdom practice · Mixed difficulty

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Showing 301-330 of 401 questions

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301 Medium

301 of 401

Analyzing +4 | -1

Assertion: Bryophyte has an independent
embryo.

Reason: The zygote of thallophyte is dependent.

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 because bryophytes have a dependent embryo (sporophyte), and the zygote of thallophytes is independent.

302 Medium

302 of 401

Understanding +4 | -1

In angiospermic plant pollen grain reaches to embryo sac after its germination on …A… and through …B… . Here A and B refer to

View answer and explanation

Correct option: B

A-stigma; B-pollen tube

Option B (A-stigma; B-pollen tube) is correct because pollen grains land on the stigma and then reach the embryo sac through the pollen tube.

303 Medium

303 of 401

Remembering +4 | -1

Meiosis in Spirogyra,Ulothrix,Chlamydomonas and most of the algae/thallophytes is

View answer and explanation

Correct option: B

Zygotic

Option B (Zygotic) is correct because in these algae, meiosis occurs in the zygote, resulting in a haploid vegetative phase.

304 Medium

304 of 401

Remembering +4 | -1

‘Club moss’ belongs to

View answer and explanation

Correct option: B

Pteridophyta

Option B (Pteridophyta) is correct because 'club moss' (Lycopodium) is a type of pteridophyte, characterized by vascular tissue and reproduction via spores.

305 Medium

305 of 401

Understanding +4 | -1

Assertion : Members of phaeophyceae vary in
colour from olive green to various shades of
brown

Reason : Phaeophyceae possess chlorophyll a,
c, carotenoids and xanthophylls.

View answer and explanation

Correct option: A

If both Assertion and Reason are true and
Reason is the correct explanation of Assertion

Option A (If both Assertion and Reason are true and Reason is the correct explanation of Assertion) is correct because the color variation in Phaeophyceae is directly due to the presence of chlorophyll a, c, carotenoids, and xanthophylls.

306 Medium

306 of 401

Understanding +4 | -1

Choose the correct match from following:-

View answer and explanation

Correct option: A

Equisetum – strobilus

Option A (Equisetum – strobilus) is the correct match because Equisetum (a horsetail) produces strobili, which are cone-like structures bearing spores.

307 Medium

307 of 401

Understanding +4 | -1

Nymphaea plant have contact with

A. Air
B. Water
C. Soil

View answer and explanation

Correct option: D

A,B and C

Option D (A,B and C) is correct because Nymphaea (water lilies) have leaves and flowers that contact air and water, and their roots are anchored in the soil.

308 Medium

308 of 401

Understanding +4 | -1

Plants have ….. in their life cycle

View answer and explanation

Correct option: C

Alternation of generations

Option C (Alternation of generations) is correct because plants exhibit alternation of generations between a sporophyte and a gametophyte.

309 Medium

309 of 401

Remembering +4 | -1

Which of the following plant show haplo-diplontic life cycle?

View answer and explanation

Correct option: C

Polysiphonia

Option C (Polysiphonia) is correct because Polysiphonia, a red alga, exhibits a haplo-diplontic life cycle, where both haploid and diploid multicellular stages are present.

310 Easy

310 of 401

Remembering +4 | -1

Select mismatched pair?

View answer and explanation

Correct option: A

Smallest angiosperm – Rafflesia

Option A (Smallest angiosperm – Rafflesia) is the mismatched pair because Rafflesia is the largest flower, not the smallest angiosperm. The smallest angiosperm is Wolffia.

311 Hard

311 of 401

Remembering +4 | -1

The leaves in pteridophytes are small as in

View answer and explanation

Correct option: C

Selaginella

Option C (Selaginella) is correct because Selaginella is a pteridophyte that exhibits small leaves (microphylls).

312 Easy

312 of 401

Remembering +4 | -1

Chlorophyll-b is not present in

View answer and explanation

Correct option: D

Blue-green algae

Option D (Blue-green algae) is correct because chlorophyll-b is not present in blue-green algae (cyanobacteria).

313 Hard

313 of 401

Understanding +4 | -1

What is the ratio of equational division that takes place in Cycas and angiosperms respectively during the formation of male gametes from pollen grains?

View answer and explanation

Correct option: C

2\mathrm{ }:\mathrm{ 1}

Option C (

2\mathrm{ }:\mathrm{ 1}

) is correct. Cycas requires two equational divisions, while angiosperms require one during male gamete formation from pollen grains.

314 Hard

314 of 401

Understanding +4 | -1

Given below are two statements : One labelled as Assertion A and the other labelled as Reason R:

Assertion A : The first stage of gametophyte in the life cycle of moss is protonema stage.

Reason R : Protonema develops directly from spores produced in capsule.

In the light of the above statements, choose the most appropriate answer from options given below:

View answer and explanation

Correct option: C

Both A and R are correct and R is the correct explanation of A

Option C is correct because both the assertion and the reason are true, and the reason correctly explains why the protonema stage is the first stage of the gametophyte in mosses.

315 Hard

315 of 401

Remembering +4 | -1

Two very distinst generations are found in the life cycle of

View answer and explanation

Correct option: D

Ferns

Option D (Ferns) is correct because ferns exhibit a distinct alternation of generations, with both a prominent sporophyte and a gametophyte stage in their life cycle.

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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

316 Hard

316 of 401

Remembering +4 | -1

Calcium encrustation and larvicidal properties are present in

View answer and explanation

Correct option: A

Chara

Option A is correct because Chara is known for calcium encrustation on its thallus and has larvicidal properties.

317 Easy

317 of 401

Understanding +4 | -1

Gymnosperms differ from ferns in having/being

View answer and explanation

Correct option: C

Ovule

Option C (Ovule) is correct because gymnosperms have ovules, which develop into seeds after fertilization, while ferns do not have ovules.

318 Medium

318 of 401

Understanding +4 | -1

Choose the wrong pair

View answer and explanation

Correct option: C

Bryopsida - Anthoceros

Option C (Bryopsida - Anthoceros) is the wrong pair because Anthoceros belongs to Anthocerotopsida, not Bryopsida.

319 Medium

319 of 401

Remembering +4 | -1

Most of the pteridophytes are?

View answer and explanation

Correct option: C

Homosporous

Option C (Homosporous) is correct because most pteridophytes produce only one type of spore, making them homosporous.

320 Easy

320 of 401

Remembering +4 | -1

Poly – Sulphate esters are found in the cell walls of

View answer and explanation

Correct option: D

Rhodophyceae

Option D (Rhodophyceae) is correct because poly-sulphate esters are found in the cell walls of red algae (Rhodophyceae), contributing to their unique cell wall structure.

321 Hard

321 of 401

Understanding +4 | -1

Which of these plants is correctly matched with its reproductive characteristics?

(i) Sphagnum: Male sex organs called antheridium produce biflagellate antherozoids while the female
sex organ called archegonium produces a single egg.

(ii) Sequoia: One of the megaspores enclosed within the megasporangium develops into a multicellular
female gametophyte that bears two or more archegonia or female sex organs.

(iii) Wolffia: One of the male gametes fuses with the egg cell to form a zygote while the other male
gamete fuses with the diploid secondary nucleus to produce the triploid primary endosperm nucleus.

(iv) Polysiphonia: Sexual reproduction is oogamous with non-motile gametes and accompanied by
complex post fertilization developments.

View answer and explanation

Correct option: D

i, ii, iii and iv

Option D (i, ii, iii and iv) is correct because all the statements accurately describe the reproductive characteristics of the given plants.

322 Easy

322 of 401

Remembering +4 | -1

In angiosperms endosperm is

View answer and explanation

Correct option: C

Triploid

Option C (Triploid) is correct because endosperm in angiosperms results from the fusion of a sperm nucleus with two polar nuclei, resulting in a triploid (3n) structure.

323 Hard

323 of 401

Remembering +4 | -1

In which of the following, pyrenoids are present?

View answer and explanation

Correct option: C

Anthoceros

The correct answer is C (Anthoceros) because pyrenoids are characteristic features found within the chloroplasts of Anthoceros.

324 Easy

324 of 401

Remembering +4 | -1

Rhodophytes are commonly called as

View answer and explanation

Correct option: B

Red algae

Option B (Red algae) is correct because Rhodophytes are indeed commonly known as red algae due to the presence of the pigment phycoerythrin.

325 Medium

325 of 401

Remembering +4 | -1

Sporophyte of fern produces

View answer and explanation

Correct option: B

Spores

Option B (Spores) is correct because the sporophyte generation in ferns produces spores through meiosis.

326 Medium

326 of 401

Remembering +4 | -1

Living fossil is

View answer and explanation

Correct option: A

Ginkgo biloba

Option A (Ginkgo biloba) is correct because Ginkgo biloba is a living fossil, representing a plant group that has remained relatively unchanged over millions of years.

327 Hard

327 of 401

Understanding +4 | -1

Seed habit is linked to

View answer and explanation

Correct option: B

Heterospory

Option B (Heterospory) is correct because heterospory, the production of two types of spores (microspores and megaspores), is a precursor to seed habit.

328 Easy

328 of 401

Remembering +4 | -1

Space travellers use the following alga to fulfill their food requirement

View answer and explanation

Correct option: B

Chlorella

Option B (Chlorella) is correct because Chlorella is a unicellular green alga known for its high protein and nutrient content, making it suitable for space travelers' food requirements.

329 Medium

329 of 401

Remembering +4 | -1

Identify the scientists worked extensively on chlorophyllous and non-chlorophyllous thallophytes, respectively.
I. Iyenger II. Swaminathan
III. Metha IV. Maheswari

View answer and explanation

Correct option: B

I and III

Option B (I and III) is correct because Iyenger and Metha are known for their extensive work on chlorophyllous and non-chlorophyllous thallophytes, respectively.

330 Easy

330 of 401

Remembering +4 | -1

Multicellular, jacketed male sex organ is

View answer and explanation

Correct option: B

Antheridium

Option B (Antheridium) is correct because the antheridium is the multicellular, jacketed male sex organ in plants like bryophytes and pteridophytes.

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Plant kingdom practice · Mixed difficulty

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