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31.

Perigynous flowers are found in

  • guava

  • cucumber

  • China rose

  • China rose


D.

China rose

Perigynous flower are found in rose. 
Flowers can be categorised based on the position of the ovary in relation to the other parts of the flower. When the floral parts arise from a position below the ovary, the flower is said to be hypogynous (hypo = below; gynous = flower) and the ovary is superior, e.g. China rose. 
When the floral parts arise from a position above the ovary, the flower is epigynous (epi = above) and ovary is inferior, e.g. cucumber and guava.
There is another special case of an inferior ovary where the bottom of sepals. petals and stamens are fused into a cup around the ovary called hypanthium (floral cup). Such, flower is termed as perigynous (peri = around), e.g. 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

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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 

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40.

Ovary is half -inferior in the flowers of 

  • guava

  • plum

  • brinjal

  • brinjal

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