IFS (Forests Services) Botany (Mains): Questions 98 - 106 of 160

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Question number: 98

» 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: Belladona (Paper 1, Section B)

Question number: 99

» Cryptogams » Algae

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Write about the following: Algae as Bio-fertilizer (Paper 1, Section A)

Explanation

  • Blue green algae (BGA) are photoautotrophic, prokaryotic algae. They are free living and also known as cyanobacteria. It fixes the atmospheric nitrogen in moist soils. So BGA has been recommended as a Biofertilizer.

  • Biofertilizers are organisms that enrich the nutrient quality of soil.

  • Main sources of biofertilizers are bacteria, fungi,

… (194 more words) …

Question number: 100

» 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: Finger millet (Paper 1, Section B)

Question number: 101

» Angiosperms » Magnoliaceae

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Comment on the following: Magnoliaceae – Primitive characters (Paper 1, Section B)

Explanation

  • Primitive characters:

  • Large flowers with numerous petals and sepals (called tepals because they are similar in size and shape).

  • The elongated floral axis bearing several free perianth segments, usually spirally arranged, the numerous stamens and carpels.

  • Radially symmetrical flower.

  • Alternative and simple leaves.

  • Cone-like a

… (68 more words) …

Question number: 102

» Morphogenesis » Totipotency

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Distinguish between the following: Totipotency and Pluripotency (Paper 1, Section B)

Explanation

Totipotency:

  • Totipotency is the genetic potential of a plant cell to produce the entire plant.

  • Totipotency defines as the capable of developing into a complete organism or differentiating into cells or tissues.

  • Regenerating of an entire plant from a single or few non-zygotic cells was proposed by Gottlieb Haberlandt in 1902. Haberlandt

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Question number: 103

» Microbiology and Plant Pathology » Viruses

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Write a brief account of the following: Lytic and Lysogenic cycle (Paper 1, Section A)

Explanation

Lytic and lysogenic cycles are two different methods of viral replication.

While they are different, they can be interchangeable or the replication can involve both methods in separate phases.

  • The Lytic Cycle:

  • In the lytic cycle, which is considered the main cycle in viral replication, once the viral DNA enters the cell it transcribes itse

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Question number: 104

» Microbiology and Plant Pathology » Applications

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Discuss briefly the following: Biopesticides (Paper 1, Section A)

Explanation

  • Biopesticides are certain types of pesticides derived from such natural materials as animals, plants, bacteria, and certain minerals.

  • Biopesticides are those biological agents that are used for control of weeds, insects and pathogens.

  • The micro-organisms used as biopesticides are viruses, bacteria, protozoa, fungi and mites.

Classes

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Question number: 105

» Cryptogams » Pteridophytes

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Differentiate between the following: Eusporangiate and Leptosporangiate ferns (paper 1, Section A)

Explanation

Based on development the sporangia have been classified by Goebel (1881) into two groups; Eusporangiate and Leptosporangiate.

Differences between Eusporangiate and Leptosporangiate

Table showing the Differences between Eusporangiate and Leptosporangiate

Eusporangiate

Leptosporangiate

In eusporangiate, large sporangium develops from many initial cells and produces many spores.

In leptosporangiate, small sporangium develops from single initial cell and produces small definite number of spores.

… (155 more words) …

Question number: 106

» 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: Eggplant (Paper 1, Section B)