Assertion: Black rust of wheat is a hazardous disease which is ca

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 Multiple Choice QuestionsMultiple Choice Questions

141.

Which of the following represents the edible part of the fruit of litchi?

  • Pericarp

  • Mesocarp

  • Juicy aril

  • Endocarp


142.

Commercial cork is obtained from

  • Flax

  • Juglans regia

  • Hevea brassiliansis

  • Quercus suber


143.

The given formula belong to

BrEpi3K(5)C5A()G(5)

  • Solanaceae

  • Malvaceae

  • Graminae

  • Compositae


144.

Biologically most resistant plant material is

  • sporopollenin

  • cutin

  • lignin

  • suberin


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145.

Select the option that contains all plants which produce non-endospermic seeds.

  • Gram, Pea, Bean, Groundnut

  • Castor, Peanut, Orchid, Wheat

  • Coconut, Walnut, Wheat, Gram

  • Castor, Maize, Coconut, Orchid


146.

Gerdy fibres are

  • ligament of neck 

  • ligament of ankles

  • ligament of palm

  • ligament of face


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147.

Assertion: Black rust of wheat is a hazardous disease which is caused by Puccinia fungus.

Reason: Aflatoxin is produced in the groundnut by the infection of a bacterium.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


C.

If assertion is true but reason is false.

Stem rust, also known as black stem rust is caused by Puccinia graminis tritici, a fungus. It primarily infects wheat, but also causes minor infections on cultivars of barley and rye. Groundnut production is reduced by Aspergillus species, a fungus, which causes quantitative losses and produces highly toxic and carcinogenic chemical substance known as aflatoxins


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148.

Which of the following is the correct floral formula for the floral diagram given below?


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149.

Assertion : Storage of seeds at low temperature is possible.

Reason : Respiration and anzymatic activity of seeds are very high at low temperature.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false

  • If both assertion and reason are false


150.

Assertion : Presence of pneumatophores is a special adaptation of hydrophytes.

Reason Pneumatophores are positively geotropic shoots that have lenticels and help in gaseous exchange.

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false


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