IFS (Forests Services) Botany (Mains): Questions 111 - 118 of 124

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Question number: 111

» Microbiology and Plant Pathology » Major Plant Diseases

Appeared in Year: 2013

Essay Question▾

Describe in Detail

Discuss briefly the following: Causal organisms, symptoms and control of wheat rusts in India (Paper 1, Section A)

Explanation

Three types of wheat rusts are known and all of them frequently occur in India.

  1. Black or stem rust

  2. Orange – Brown rust

  3. Yellow stripe rust

Black or stem rust:

Causal organism: Puccinia graminis tritici

Symptoms:

  • Symptoms are produced on almost all aerial parts of the wheat plant but are… (470 more words) …

Question number: 112

» Microbiology and Plant Pathology » Major Plant Diseases

Appeared in Year: 2013

Essay Question▾

Describe in Detail

Discuss briefly the following: Dissemination of pathogens by insects (Paper 1, Section A)

Explanation

  • Since the discovery by Waite that bees and wasps can transmit bacteria causing fire blight of apple and pear, Erwinia amylovora, much information has been accumulated on the role of insects and other small animals in the dissemination of plant-pathogenic viruses, bacteria and fungi.

  • Many small animals help in the… (181 more words) …

Question number: 113

» Cryptogams » Bryophytes

Appeared in Year: 2013

Essay Question▾

Describe in Detail

Discuss briefly the following: Economic importance and distribution of Bryophytes (Paper 1, Section A)

Explanation

Economic importance of Bryophytes:

  • Protection from soil erosion: Bryophytes, especially mosses, form dense mats over the soil and prevent soil erosion by running water.

  • Soil formation: Mosses are an important link in plant succession on rocky areas. They take part in binding soil in rock crevices formed by lichens. Growth… (377 more words) …

Question number: 114

» Angiosperms » Systematics

Appeared in Year: 2013

One Liner Question▾

Write in Brief

Write the botanical name, family and part used of each of the following: Jasmine (Paper 1, Section B)

Question number: 115

» Phanerogams » Cycadales

Appeared in Year: 2013

Short Answer Question▾

Write in Short

Draw scientifically accurate diagrams of the following and label the parts: T. S. of coralloid root of Cycas (Paper 1, Section B)

Question number: 116

» Angiosperms » Systematics

Appeared in Year: 2013

One Liner Question▾

Write in Brief

Write the botanical name, family and part used of each of the following: Turmeric (Paper 1, Section B)

Question number: 117

» Cryptogams » Pteridophytes

Appeared in Year: 2013

Essay Question▾

Describe in Detail

Discuss briefly the following: Diversity and distribution of Indian Pteridophytes (Paper 1, Section A)

Explanation

  • There are 305 Genera and 13000 species of Pteridophytes all over the world.

  • India with a highly variable climate has a rich flora of Pteridophytes.

  • As far as diversity and distribution of Pteridophytic flora are concerned, there are about 1100 - 1200 species of ferns and its allies that are… (566 more words) …

Question number: 118

» Angiosperms » Systematics

Appeared in Year: 2013

One Liner Question▾

Write in Brief

Write the botanical name, family and part used of each of the following: Mint (Paper 1, Section B)

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