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Plant Kingdom · Question 99

AIPMT 2003MCQMedium📈 Topic in 62% papers+4−1
1

Which one of the following is categorised under living fossils ?

  1. Cycas
  2. Metasequoia
  3. Pinus
  4. Selaginella

Answer

(1) Cycas

Solution

A living fossil is a present-day organism that has remained almost unchanged since a very ancient period and is otherwise known mainly from fossils.

⇒ Cycads (order Cycadales) arose in the Mesozoic era and flourished with the dinosaurs; the living genus Cycas still shows the primitive features of its fossil relatives (motile sperms, unbranched stem with a crown of pinnate leaves, coralloid roots).

∴ Cycas is categorised as a living fossil.

Answer: (1)

AIPMT 2003

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2

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
3

Which of the following is without exception in angiosperms?

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

Which of the following plants produces seeds but not flowers?

  1. Maize
  2. Mint
  3. Peepal
  4. Pinus
AIPMT 2002
5

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
6

A student observed an alga with chlorophyll a, d and phycoerythrin, it should belong to

  1. Phaeophyta
  2. Rhodophyta
  3. Chlorophyta
  4. Bacillariophyta
AIPMT 2000
7

In ferns, meiosis takes place at the time of

  1. spore formation
  2. spore germination
  3. gamete formation
  4. antheridia and archegonia formation
AIPMT 2000
8

Plant group with largest ovule, largest tree, and largest gametes is

  1. gymnosperm
  2. angiosperm
  3. bryophyta
  4. pteridophyta.
AIPMT 2000

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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
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