IFS (Forests Services) Botany (Mains): Questions 84 - 92 of 225

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Question number: 84

» Cryptogams » Fungi

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Differentiate between the following: Holocarpic and Eucarpic fungi (Paper 1, Section –A)

Explanation

In fungi, asexual reproduction is predominant and is depending upon the involvement of the entire thallus or a part of thallus, the fungi may be Holocarpic or Eucarpic.

Difference between Holocarpic and Eucarpic

Table showing the Difference between Holocarpic and Eucarpic

Holocarpic

Eucarpic

In Holocarpic fungi, the entire thallus gets converted into one or more reproductive bodies.

In Eucarpic fungi, only a part of the thallus is involved in the development of reproductive organs and remaining thallus remains vegetative.

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Question number: 85

» Plant Utility and Exploitation » Ethnobotany

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Write short notes on the following: Ethnobotany (Paper 1, Section B)

Explanation

  • Ethnobotany is the branch of ethnobiology and is the scientific study of the interrelationship between people and plants.

  • Ethnobotany is the science of people’s interactions with plants.

  • In Ethnobotany, ethno means study of people and botany means study of plants.

  • The term Ethnobotany was coined in 1895, by J. M. Harshberger, an American botanist at t

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Question number: 86

» Angiosperms » Systematics

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Appeared in Year: 2013

One Liner Question▾

Write in Brief

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

Question number: 87

» Phanerogams » Coniferrals

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Make a comparison of the following: Long shoot and dwarf shoot of Pinus (Paper 1, Section B)

Explanation

Long shoot of Pinus versus Dwarf shoot of Pinus

Table showing the Long shoot of Pinus versus Dwarf shoot of Pinus

Long shoot of Pinus

Dwarf shoot of Pinus

Long shoot also called as branches of unlimited growth or long laterals.

Dwarf shoot also called as branches of limited growth or short laterals.

Long shoots contain apical bud.

Dwarf shoots are devoid of any apical bud.

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Question number: 88

» Angiosperms » Systematics

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Appeared in Year: 2013

One Liner Question▾

Write in Brief

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

Question number: 89

» Microbiology and Plant Pathology » Bacteria

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Discuss briefly the following: Endospore formation in bacteria and its significance (Paper 1, Section A)

Explanation

  • An endospore is an extremely resistant dormant cell structure produced by some bacterial species.

  • Endospore means; endo means inside and spore means to the dormant structure, so the endospore is a structure formed inside the cell.

  • There are many examples of endospore forming bacteria.

  • The two most common are Clostridium and Bacillus.

  • In favorable condi

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Question number: 90

» Morphogenesis » Somatic Hybrids

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Differentiate between Somatic embryogenesis and Organogenesis (Paper 1, Section B)

Explanation

Somatic embryogenesis:

  • In plant tissue culture, the developmental pathway of numerous well organized, small embryoids resembling the zygotic embryos from the embryo genic potential somatic plant cell of the callus tissue or cells of suspension culture is known as somatic embryogenesis.

  • Somatic embryogenesis is the process by which embryo forms and de

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Question number: 91

» Angiosperms » Embryology

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Appeared in Year: 2013

Short Answer Question▾

Write in Short

Draw scientifically accurate diagrams of the following and label the parts: Typical embryo sac of dicots (Paper 1, Section B)

Question number: 92

» Phanerogams » Cycadales

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Write short notes on the following: Cycadofilicales (Paper 1, Section B)

Explanation

  • Cycadofilicales is an order of fossil gymnosperms trees or climbing plants from the Devonian.

  • They possessed characteristics of both the ferns and the seed plants that had fern like leaves and reproduced by means of seeds.

  • In Cycadofilicales order, absence of roots, some are without leaves and some have small tiny outgrowth which is represented as le

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