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Plant Kingdom · Question 103

AIPMT 2001MCQEasy📈 Topic in 62% papers+4−1
1

Cycas has two cotyledons but not included in angiosperms because of

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

Answer

(1) naked ovules

Solution

As per NCERT, gymnosperms (gymnos: naked, sperma: seeds) are plants in which the ovules are not enclosed by any ovary wall and remain exposed, both before and after fertilisation.

In angiosperms the ovules are enclosed in an ovary.

∵ Cycas bears naked ovules (on megasporophylls), it is a gymnosperm, even though its embryo has two cotyledons.

Answer: (1)

AIPMT 2001

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2

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
3

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
4

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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