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NEET • BIOLOGY • PLANT KINGDOM

Plant kingdom practice · Medium

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121 Medium

121 of 181

Remembering +4 | -1

Phloem in gymnosperms lacks?

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Correct option: A

Both sieve tubes and companion cells

Option D (Companion cells only) is correct because phloem in gymnosperms lacks companion cells, but it does have sieve cells and albuminous cells.

122 Medium

122 of 181

Remembering +4 | -1

The organism which can fix atmosphere

C{O_2}

and releases

{O_2}

as by product is

View answer and explanation

Correct option: C

Wolffia

Option C (Wolffia) is correct because Wolffia is a photosynthetic plant that fixes atmospheric CO2 and releases O2 as a byproduct of photosynthesis.

123 Medium

123 of 181

Remembering +4 | -1

The members of Phaeophyceae are commonly called

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Correct option: C

Brown algae

Option C (Brown algae) is correct because members of Phaeophyceae are commonly called brown algae due to the presence of the pigment fucoxanthin.

124 Medium

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Understanding +4 | -1

If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?

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Correct option: A

Types of pigments present in the cell

Option A is correct because the types of pigments present in the cell are a primary characteristic used to classify algae into different groups (e.g., Chlorophyceae, Phaeophyceae, Rhodophyceae).

125 Medium

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Remembering +4 | -1

Gymnosperms are characterised by

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Correct option: B

Nacked seeds

Option B (Nacked seeds) is correct because gymnosperms are characterized by having seeds that are not enclosed within an ovary (naked seeds).

126 Medium

126 of 181

Remembering +4 | -1

Double fertilisation is characteristic feature of

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Correct option: B

Angiosperms

Option B (Angiosperms) is correct because double fertilization is a defining characteristic of angiosperms, involving the fusion of one sperm with the egg and another with the polar nuclei.

127 Medium

127 of 181

Analyzing +4 | -1

Select odd one out w.r.t. ploidy of main plant body.

View answer and explanation

Correct option: D

Bryophyte

Option D (Bryophyte) is correct because bryophytes have a dominant gametophyte (haploid) plant body, while pteridophytes, gymnosperms, and angiosperms have a dominant sporophyte (diploid) plant body.

128 Medium

128 of 181

Remembering +4 | -1

First vascular plant is

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Correct option: C

Pteridophyta

Option C (Pteridophyta) is correct because pteridophytes are the first plants to possess vascular tissues (xylem and phloem).

129 Medium

129 of 181

Remembering +4 | -1

Identify the alga, which exhibits diplontic life cycle.

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Correct option: C

Fucus

Option C (Fucus) is correct because Fucus, a brown alga, exhibits a diplontic life cycle where the diploid sporophyte is the dominant phase and meiosis occurs during gamete formation.

130 Medium

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Analyzing +4 | -1

Select the mismatch among the given options.

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Correct option: C

Sargassum - Chl b

Option C (Sargassum - Chl b) is correct because Sargassum belongs to Phaeophyceae (brown algae) and contains chlorophyll a and c, along with fucoxanthin, but not chlorophyll b.

131 Medium

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Remembering +4 | -1

The alga used in space research is

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Correct option: C

Chlorella

Option C (Chlorella) is correct because Chlorella is a single-celled green alga known for its high photosynthetic efficiency and nutritional value, making it suitable for space research.

132 Medium

132 of 181

Understanding +4 | -1

Double fertilisation involves

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Correct option: A

Syngamy and triple fusion

Option A (Syngamy and triple fusion) is correct because double fertilization involves both the fusion of a male gamete with the egg (syngamy) and the fusion of another male gamete with the polar nuclei (triple fusion).

133 Medium

133 of 181

Understanding +4 | -1

Read carefully the following statements about angiospermic sexual fertilisation
I. Pollen tube carries the male gamete towards archegonia and discharge contents in the mouth of archegonium
II. Male gamete fuses with egg to give rise zygote
III. Zygote develops into embryo and embryo into seeds
IV. Seeds are naked
Which of the statement given above are correct?

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Correct option: D

I, II, III and IV

Option A (I and II) is correct because statements I and II accurately describe the process of angiospermic fertilization, while statements III and IV are incorrect.

134 Medium

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Remembering +4 | -1

A prokaryotic autotrophic nitrogen fixing symbiont is found in

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Correct option: A

Cycas

Option A is correct because Cycas has a symbiotic association with nitrogen-fixing cyanobacteria (prokaryotic, autotrophic) in its coralloid roots.

135 Medium

135 of 181

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.

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136 Medium

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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.

137 Medium

137 of 181

Remembering +4 | -1

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

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Correct option: B

Zygotic

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

138 Medium

138 of 181

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.

139 Medium

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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.

140 Medium

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Understanding +4 | -1

Choose the correct match from following:-

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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.

141 Medium

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Understanding +4 | -1

Nymphaea plant have contact with

A. Air
B. Water
C. Soil

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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.

142 Medium

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Understanding +4 | -1

Plants have ….. in their life cycle

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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.

143 Medium

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Remembering +4 | -1

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

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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.

144 Medium

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Understanding +4 | -1

Choose the wrong pair

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Correct option: C

Bryopsida - Anthoceros

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

145 Medium

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Remembering +4 | -1

Most of the pteridophytes are?

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Correct option: C

Homosporous

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

146 Medium

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Remembering +4 | -1

Sporophyte of fern produces

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Correct option: B

Spores

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

147 Medium

147 of 181

Remembering +4 | -1

Living fossil is

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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.

148 Medium

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Remembering +4 | -1

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

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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.

149 Medium

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Understanding +4 | -1

Which of the following statement is true about the sporophytic stage in plant life cycle?

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Correct option: C

Generation that produces the spores

Option C (Generation that produces the spores) is correct because the sporophytic stage is the diploid generation that produces spores through meiosis.

150 Medium

150 of 181

Remembering +4 | -1

Storage bodies, pyrenoids in the chloroplast contain

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Correct option: A

Protein and starch

Option A (Protein and starch) is correct because pyrenoids are organelles found in the chloroplasts of algae and contain both protein and starch.

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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