Grittiness of pear fruit is caused by from Biology Morphology of

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 Multiple Choice QuestionsMultiple Choice Questions

181.

Among bitter gourd, mustard, brinjal, pumpkin, China rose, lupin, cucumber, sunnhemp, gram, guava, bean, chilli, plum, Petunia, tomato, rose, Withania, potato, onion, aloe and tulip, how many plants have hypogynous flower?

  • Six

  • Ten

  • Fifteen

  • Eighteen


182.

In China rose the flowers are

  • actinomorphic, hypogynous with twisted aestivation

  • actinomorphic, epigynous with valvate aestivation

  • zygomorphic, hypogynous with imbricate aestivation

  • zygomorphic, epigynous with twisted aestivation


183.

In apple, the edible portion is

  • mesocarp

  • epicarp

  • endocarp

  • thalamus


184.

The partial floral formula of a flower is K(5)C5A()G(5).

Which of the following set of information is conveyed here?

  • Gamosepalous, polypetalous, syncarpous and superior ovary

  • Polysepalous, polypetalous, syncarpous and inferior ovary

  • Gamosepalous, gamopetalous, polycarpous and superior ovary

  • Gamosepalous, polypetalous, syncarpous and inferior ovary


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185.

Grittiness of pear fruit is caused by

  • sclereides

  • raphides

  • collenchyma

  • dead parenchyma cells


A.

sclereides

The texture of the pear, is characteristically gritty, a quality that is related to the presence of special cells called sclereids or stone cells. These cells are variously shaped sclerenchyma cells with thick, lignified walls that function in providing structural support and strength to tissues.


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186.

Banana is an example of

  • parthenocarpy

  • apomixis

  • parthenogenesis

  • polyembryony


187.

The characteristic that does not belong to perigynous flowers is

  • Thalamus is disc shaped, cup or flask shaped

  • Ovary is superior, other parts are inferior

  • Thalamus is hollowed out and is fused with ovary wall

  • Androperianth is borne around or above the level of ovary.


188.

The infloresence in Mimosa pudica is

  • Umbel

  • Spike

  • Corymb

  • glabose head


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189.

The Floral formula of tobacco is

  • Br+OK(5) C(5) A5 G(2)

  • +OK6 - 5 A10 G(2)

  • Br+OK2 + 2 C4 A2 + 4 G1(d)

  • +OP2 A3 G1


190.

Select the mismatch.

  • Tomato - Axile placentation

  • Sunflower - Free central placentation

  • Pea - Marginal placentation

  • Poppy - Parietal placentation


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