Late blight of potato is caused by from Biology Morphology of Fl

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 Multiple Choice QuestionsMultiple Choice Questions

161.

Fruit of Hibiscus esculentus is

  • capsule

  • cypsela

  • legume

  • pome


162.

Pollinia are found in

  • Rubiaceae

  • Asteraceae

  • Asclepiadaceae

  • Myrtaceae


163.

Wood commonly used for making cricket bat is

  • Cedrus

  • Salix

  • Tectona

  • Morus


164.

Vivipary is shown by

  • Cocos

  • Squash

  • Rhizophora

  • All of the above


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165.

Wilting of leaves at noon and their recovery toward evening is known as

  • incipient wilting

  • temporary wilting

  • midday desiccation

  • permanent wilting


166.

Which one of the following is a pseudocarp ?

  • Apple

  • Guava

  • Tomato

  • Banana


167.

Tetradynamous stamens are found in family

  • Malvaceae

  • Solanaceae

  • Cruciferae

  • Liliaceae


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168.

Late blight of potato is caused by

  • Ustilago

  • Pseudomonas

  • Phytophthora infestans

  • Colletotrichum falcatum


C.

Phytophthora infestans

Phytophthora infestans, a pathogen of Class Phycomycetes attacks a number of members of family- Solanaceae, the important being potato and tomato. It causes late blight of potato as its destruction is seen in the later stages of the plant.


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169.

A fruit developed from a condensed inflorescence is :

  • simple fruit

  • aggregate fruit

  • composite fruit

  • etaerio


170.

Divisions characteristic of korper-kappe theory are:

  • anticlinal

  • T-type

  • periclinal

  • irregular


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