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 Multiple Choice QuestionsMultiple Choice Questions

31.

Perigynous flowers are found in

  • guava

  • cucumber

  • China rose

  • China rose

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32.

Leaves become modified into spines in

  • Opuntia

  • pea

  • onion

  • onion

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33.

The hilum is a scar on the 

  • seed, where funicle was attached

  • fruit, where it was attached to pedicel

  • fruit, where style was present

  • fruit, where style was present

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34.

The hilum is a scar on the

  • seed, where funicle was attached

  • fruit, where it was attached to pedicel

  • fruit, where style was present

  • fruit, where style was present

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35.

Flowers are zygomorphic on 

  • Gulmohur

  • tomato

  • datura

  • datura

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36.

The ovary is half inferior in flowers of 

  • cucumber

  • cotton

  • guava

  • guava

351 Views

37.

Whorled, simple leaves with reticulate venation are present in

  • Calotropis

  • Neem

  • China rose

  • China rose

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38.

Which one of the following diagrams represents the placentation in Dianthus? 

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39.

In unilocular ovary with a single ovule, the placentation is 

  • marginal

  • basal

  • free central 

  • free central 


B.

basal

In basal placentation, the ovary is bicarpellary, syncarpous and unilocular and a single ovule is borne at the base of ovary, eg, marigold. 

In marginal placentation, the ovary is simple unilocular and the ovules are arranged along the margin of ovary eg, pea. 

In free central placentation, the ovary is unilocular and the placenta bearing ovules arise from the central axis, e,g Stellaria. 
In axile placentation, the ovary is two or more chambered usually as many as the number of carpels, eg, Petunia. 
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40.

Ovary is half -inferior in the flowers of 

  • guava

  • plum

  • brinjal

  • brinjal

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