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Plant Kingdom · Question 38

NEET 2016 (Phase 2)MCQEasy📈 Topic in 38% papers+4−1
1

Which one of the following statements is wrong?

  1. Algae increase the level of dissolved oxygen in the immediate environment.
  2. Algin is obtained from red algae, and carrageenan from brown algae.
  3. Agar-agar is obtained from Gelidium and Gracilaria.
  4. Laminaria and Sargassum are used as food.

Answer

(2) Algin is obtained from red algae, and carrageenan from brown algae.

Solution

As per NCERT, algin is obtained from brown algae and carrageen from red algae; both are commercially used hydrocolloids.

∴ Statement (2) has them interchanged and is wrong.

∵ Algae increase the level of dissolved oxygen through photosynthesis, agar is obtained from Gelidium and Gracilaria, and many marine algae like Laminaria and Sargassum are used as food,

⇒ statements (1), (3) and (4) are correct.

Answer: (2)

NEET 2016 (Phase 2)

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2

Which one of the following statements is wrong?

  1. Chlorella and Spirulina are used as space food.
  2. Mannitol is stored food in Rhodophyceae.
  3. Algin and carrageenan are products of algae.
  4. Agar-agar is obtained from Gelidium and Gracilaria.
AIPMT 2015 (Cancelled)
3

In which of the following, gametophyte is not independent free living?

  1. Pteris
  2. Pinus
  3. Funaria
  4. Marchantia
AIPMT 2015 (Cancelled)
4

Read the following five statements (A to E) and select the option with all correct statements.

  1. A, D and E
  2. B, C and E
  3. A, C and D
  4. B, C and D
AIPMT 2015 (Cancelled)
5

Male gametes are flagellated in

  1. Ectocarpus
  2. Spirogyra
  3. Polysiphonia
  4. Anabaena.
AIPMT 2015 (Cancelled)
6

Which one of the following is wrong about Chara?

  1. Upper oogonium and lower round antheridium
  2. Globule and nucule present on the same plant
  3. Upper antheridium and lower oogonium
  4. Globule is male reproductive structure
AIPMT 2014
7

Which of the following is responsible for peat formation?

  1. Marchantia
  2. Riccia
  3. Funaria
  4. Sphagnum
AIPMT 2014
8

Male gametophyte with least number of cells is present in

  1. Pteris
  2. Funaria
  3. Lilium
  4. Pinus.
AIPMT 2014
9

Which one of the following shows isogamy with non-flagellated gametes?

  1. Sargassum
  2. Ectocarpus
  3. Ulothrix
  4. Spirogyra
AIPMT 2014
10

An alga which can be employed as food for human being is :

  1. Polysiphonia
  2. Chlorella
  3. Ulothrix
  4. Spirogyra
AIPMT 2014
11

Select the wrong statement

  1. In Oomycetes, female gamete is smaller and motile, while male gamete is larger and non-motile.
  2. Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy.
  3. Isogametes are similar in structure, function and behaviour.
  4. Anisogametes differ either in structure, function or behaviour.
NEET 2013

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All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
Other chaptersBiomolecules (Biology)