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Plant Kingdom

Description: All about Plant Kingdom
Number of Questions: 15
Created by:
Tags: Bryophyte Pteridophyte Angiosperm Gymnosperm Algae Thallophyta Taxonomic Aids Taxonomical Aids Classification of Division Bryophyta Bryophyta Pteridophyta Gymnosperms
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Which of the following statements is wrong regarding the Phaeophyceae algae?

  1. This brown algae is found in marine habitats.

  2. Dominant pigment found in this is r-phycoerythrin.

  3. Food is stored as complex carbohydrates; in the form of laminarin or mannitol.

  4. The plant body has a stalk, stipe and leaf-like fond.

  5. Asexual reproduction takes place by biflagellate zoospores.

Show answer
Correct Option: B
Explanation:

Yes, it is the correct answer as this statement is wrong. Chlorophyll a, c, carotenoids and xanthophyll are the pigments found in phaeophyceae.

Which of the following statements is false regarding the habits and habitat of algae?

  1. Algae are simple and thalloid organisms

  2. They are mainly aquatic organisms and live in freshwater and marine habitats

  3. They bear chlorophyll

  4. Some algae occur in association with fungi (as lichen)

  5. None of these

Show answer
Correct Option: E
Explanation:

Yes, it is the correct answer, as all the statements given are true.

Hydrocolloids are water holding substances and are used commercially. Which of the following organisms is used to produce these hydrocolloids?

  1. Bryophytes

  2. Pteridophytes

  3. Gymnosperms

  4. Brown and red algae

  5. Angiosperms

Show answer
Correct Option: D
Explanation:

Yes, it is correct. Some marine brown and red algae produce large amounts of hydrocolloids.

Which of the following types of reproductions takes place in algae, when the gametes are of same size?

  1. Sexual reproduction with oogamous fusion

  2. Asexual reproduction by different kinds of spores

  3. Sexual reproduction with isogamous fusion

  4. Sexual reproduction with anisogamous fusion

  5. Vegetative reproduction by fragmentation

Show answer
Correct Option: C
Explanation:

Yes, it is correct. In this case, the gametes are similar in size, e.g. Spirogyra. The gametes can be flagellated or non-flagellated.

Which of the following bears sporangia that are subtended by leaf-like appendages called sporophylls?

  1. Sporophyte

  2. Strobili

  3. Cones

  4. Microphylls

  5. Megaphylls

Show answer
Correct Option: A
Explanation:

Yes, it is the correct answer. The main plant body of Pteridophytes is a sporophyte and sporophyte bears sporangia.

During practicals, students were asked to identify all the Chlorophycea from the group of algae displayed. Which of the following belonged to this group?

Chlamydomonas, Fucus, Ulothrix, Geledium, Spirogyra and Chara

  1. Chlamydomonas, Fucus and Ulothrix

  2. Geledium, Spirogyra and Chara

  3. Fucus, Ulothrix and Geledium

  4. Chlamydomonas, Ulothrix, Spirogyra and Chara

  5. Fucus, Chara, Geledium and Spirogyra

Show answer
Correct Option: D
Explanation:

Yes, it is the correct answer as all of these algae belong to the Chlorophyceae class.

Which of the following is used as packing material for a shipment of living materials?

  1. Liverworts

  2. Phaeophyceae

  3. Chlorophyceae

  4. Peat

  5. None of these

Show answer
Correct Option: D
Explanation:

Yes, it is correct. Peat is obtained from species of Sphagnum which is a moss. Peat has been in use as fuel. Peat is also used as packing material for shipment of living materials because peat has good capacity to hold water.

Which one of the statements Rita wrote on Gymnosperms was wrong?

  1. The ovules in gymnosperms are enclosed by an ovary wall.

  2. Gymnosperms have tap root.

  3. They are heterosporous.

  4. Gymnosperms include medium-sized or tall trees and shrubs.

  5. The stems are unbranched or branched.

Show answer
Correct Option: A
Explanation:

Yes, it is the correct answer as this statement is wrong. The ovules in gymnosperms are not enclosed by an ovary wall. The seeds too are not covered, i.e. they are naked.

Gametophyte is the predominant stage of the life cycle of moss. The gametophyte consists of which of the following two stages?

  1. Antheridia and archegonia

  2. Protonema and leafy stage

  3. Zygote and sporophyte

  4. Protonema and antheridia

  5. None of these

Show answer
Correct Option: B
Explanation:

Yes, it is correct. Protonema develops from the spore. The leafy stage develops from the protonema as a lateral bud.

Which of the following specialised structures is formed during asexual reproduction in liverworts?

  1. Gemma

  2. Spores

  3. Gametophyte

  4. Protonema

  5. Zygote

Show answer
Correct Option: A
Explanation:

Yes, it is the correct answer. Asexual reproduction takes place by fragmentation, or by formation of specialized structures called gemmae. A gemma is a green multicellular asexual bud.

Which of the following statements is/are false regarding the male sex organ in a Bryophyte? (a) It is known as antherozoid. (b) It is multicellular. (c) It produces biflagellate antheridium. (d) Antherozoids are released into water for fertilization.

  1. Only a

  2. Only c

  3. Only a and b

  4. Only b and d

  5. Only a and c

Show answer
Correct Option: D
Explanation:

Yes, both the statements are false and hence, this option is correct. Male sex organ in bryophytes is antheridium. Antheridium produces biflagellate antherozoid.

Which of the following statements is/are false regarding gymnosperms? (a) Microspores develop into a male gametophytic generation. (b) The large-sized gametophyte is called pollen grain. (c) The female strobili are called megasporangiate. (d) Sporophylls are arranged parallel along an axis.

  1. Only a

  2. Only b

  3. Only a and b

  4. Only c and d

  5. Only b and d

Show answer
Correct Option: E
Explanation:

Yes, it is the correct answer, as both the statements are false. The small-sized gametophyte is called pollen grain. Sporangia are borne on sporophylls, which are arranged spirally along an axis.

Production of spores of two different sizes and sexes by the sporophytes, is shown by Gymnosperms. Which of the following terms is used for such plants?

  1. Microphyll

  2. Megaphyll

  3. Homosporous

  4. Megaspores

  5. Heterosporous

Show answer
Correct Option: E
Explanation:

Yes, it is the correct answer. Plants producing spores of two different sizes and sexes are known as heterosporous.

Which of the following statements regarding angiosperms is/are false? (a) Male and female gametes develop in fruits. (b) They are of classes-dicotyledon and monocotyledon. (c) Wolfia is the largest angiosperm. (d) Double fertilisation takes place.

  1. Only a

  2. Only c

  3. Only b and d

  4. Only a and c

  5. Only b and d

Show answer
Correct Option: D
Explanation:

Yes, it is the correct answer as both the statements are false. Male and female gametes are developed in specialized structures called flowers, and Wolffia is microscopic; it is the smallest angiosperm.

Match the following:

     
1 Phylogenetic Classification a Based on Chemical contituents
2 Numerical Taxonomy b Based on Evolutionary Relation
3 Cytotaxonomy c Based on all observable characteristics.

  1. 1 - a, 2 - c, 3 - b

  2. 1 - b, 2 - c, 3 - a

  3. 1 - c, 2 - b, 3 - a

  4. 1 - b, 2 - a, 3 - c

  5. 1 - c, 2 - a, 3 - b

Show answer
Correct Option: B
Explanation:

Yes, it is correct. All are matched correctly.

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