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Plant Kingdom · Question 93

AIPMT 2004MCQEasy📈 Topic in 62% papers+4−1
1

Which one of the following is living fossil ?

  1. Cycas
  2. Moss
  3. Spirogyra
  4. Saccharomyces

Answer

(1) Cycas

Solution

A living fossil is a living organism that has remained almost unchanged for millions of years and resembles its fossil ancestors, while its close relatives are extinct.

⇒ Cycas (a gymnosperm) closely resembles the extinct seed ferns and cycads of the Mesozoic era.

∴ Cycas is called a living fossil (other examples: Ginkgo, Limulus).

Answer: (1)

AIPMT 2004

Keep practising — Plant Kingdom

2

Phenetic classification of organisms is based on

  1. observable characteristics of existing organisms
  2. the ancestral lineage of existing organisms
  3. dendrogram based on DNA characteristics
  4. sexual characteristics.
AIPMT 2003
3

Which one of the following pairs of plants are not seed producers?

  1. Fern and Funaria
  2. Funaria and Ficus
  3. Ficus and Chlamydomonas
  4. Funaria and Pinus
AIPMT 2003
4

Sexual reproduction in Spirogyra is an advanced feature because it shows

  1. different sizes of motile sex organs
  2. same size of motile sex organs
  3. morphologically different sex organs
  4. physiologically differentiated sex organs.
AIPMT 2003
5

Plants reproducing by spores such as mosses and ferns are grouped under the general term

  1. cryptogams
  2. bryophytes
  3. sporophytes
  4. thallophytes.
AIPMT 2003
6

Which one pair of examples will correctly represent the grouping spermatophyta according to one of the schemes of classifying plants?

  1. Acacia, sugarcane
  2. Pinus, Cycas
  3. Rhizopus, Triticum
  4. Ginkgo, Pisum
AIPMT 2003
7

Which one of the following is categorised under living fossils ?

  1. Cycas
  2. Metasequoia
  3. Pinus
  4. Selaginella
AIPMT 2003
8

Chlorenchyma is known to develop in the :

  1. Mycelium of a green mould such as Aspergillus
  2. Pollen tube of Pinus
  3. Cytoplasm of Chlorella
  4. Spore capsule of a moss
AIPMT 2003
9

Which of the following is without exception in angiosperms?

  1. Presence of vessels
  2. Double fertilisation
  3. Secondary growth
  4. Autotrophic nutrition
AIPMT 2002
10

Which of the following plants produces seeds but not flowers?

  1. Maize
  2. Mint
  3. Peepal
  4. Pinus
AIPMT 2002
11

Cycas has two cotyledons but not included in angiosperms because of

  1. naked ovules
  2. seems like monocot
  3. circinate ptyxis
  4. compound leaves
AIPMT 2001

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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)