IFS Botany (Mains): Questions 22 - 30 of 124

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Question number: 22

» Morphogenesis » Protoplast Culture

Appeared in Year: 2015

Essay Question▾

Describe in Detail

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

Explanation

Protoplast fusion is a technique by which two protoplasts are fused to form hybrid cells that can grow into mature hybrid organisms.

Methods of Protoplast Fusion:

Understanding the method of protoplast fusion

Understanding the Method of Protoplast Fusion

What is the correct method of protoplast fusion

Spontaneous Fusion:

  • Protoplasts during isolation often fuse spontaneously and this… (381 more words) …

Question number: 23

» Angiosperms » Systematics

Appeared in Year: 2015

Essay Question▾

Describe in Detail

Give the salient features of Engler and Prantl’s system of classification and compare it with that of Bentham and Hooker’s system of classification.

Explanation

Salient features of Engler and Prantl’s system:

  • Monochlamydeous is completely put an end to and families are distributed in the large series called Archichlamydeae.

  • This Engler system dominates over all the natural system but not to the rejection of other.

  • They accept the theory of descends and threw light or… (438 more words) …

Question number: 24

» Cryptogams » Fungi

Appeared in Year: 2015

Essay Question▾

Describe in Detail

How are the fungal toxins classified according to their source of origin? (Paper-1, Section-A)

Explanation

Defining Toxins:

  • Toxins are harmful products, which are produced by living organisms, bacteria plants or animals.

  • A toxin is a product of microorganism or of a microorganism host complex, which acts on living host protoplast to influence disease development or symptoms.

  • Toxins is an injurious substances produced by organisms.

Types… (125 more words) …

Question number: 25

» Cryptogams » Bryophytes

Appeared in Year: 2015

Essay Question▾

Describe in Detail

With the help of suitable diagrams, describe the development of sporophyte in bryophytes. (Paper-1, Section-A)

Explanation

Development of sporophyte in bryophytes

Development of Sporophyte in Bryophytes

Understanding the development of sporophyte in bryophytes

  • A sporophyte is created by sexual reproduction of the gametophyte generation.

  • Gametophytes make haploid unicellular gametes, or sperm and eggs.

  • When a sperm cell fuses with an egg cell, this is called fertilization.

  • It creates a unicellular diploid… (121 more words) …

Question number: 26

» Microbiology and Plant Pathology » Bacteria

Appeared in Year: 2015

Essay Question▾

Describe in Detail

What are the various methods of genetic recombination in bacteria? (Paper-1, Section-A)

Explanation

  • Genetic recombination is a process where genetic materials, contained in two separate genomes, are brought together within one unit.

  • Genetic recombination is when genes from two different sources are combined to form a new genetic combination.

In bacteria the recombination takes place by three methods;

  • Transformation

  • Transduction

  • Conjugation

Transformation:

  • Transformation… (389 more words) …

Question number: 27

» Angiosperms » Cucurbitaceae

Appeared in Year: 2015

Essay Question▾

Describe in Detail

Write down the botanical names and the uses of the plants of economic importance belonging to the family Cucurbitaceae. (Paper 1, Section B)

Explanation

  • Mainly all Cucurbitaceae family plants are economically important as vegetables used in kitchen, some plants have medicinal value and hard dried shells are used to form flasks as vessels and utensils.
  • It also used as blowpipe of snake charmer, drum for tambura, soraja etc. in making musical instrument.

  • Some plants… (223 more words) …

Question number: 28

» Morphogenesis » Cell

Appeared in Year: 2015

Essay Question▾

Describe in Detail

Mention primitive characteristics of Magnoliaceae (Paper 1, Section B)

Explanation

Characteristics of Magnoliaceae:

  • Trees or shrubs

  • Leaves alternate, pinnately veined, simple stipules enclosing bud

  • Flowers solitary, actinomorphic

  • Stamens spirally arranged, ribbon-like

  • Simple leaves

  • Cone like floral axis with flowers that have six tepals

  • Spirally arranged stamens, and one, two, or many carpels

  • Flowers are bisexual and are borne on branch… (28 more words) …

Question number: 29

» Plant Utility and Exploitation » Botanical Gardens and Herbaria

Appeared in Year: 2015

Essay Question▾

Describe in Detail

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

Explanation

Definition:

  • Botanical garden is a place where plants are cultivated for scientific, educational, and ornamental purposes.
  • Botanical garden is a garden for the exhibition and scientific study of collected growing plants.

  • Botanical garden is usually in association with greenhouses, herbariums, laboratories, etc.

  • A place where a variety of plants are… (474 more words) …

Question number: 30

» Microbiology and Plant Pathology » Major Plant Diseases

Appeared in Year: 2015

Essay Question▾

Describe in Detail

Write short note on: Powdery mildew diseases in plants (Paper-1, Section-A)

Explanation

Definition:

  • Powdery mildew is a fungal disease of the foliage, stems and occasionally flowers and fruit where a superficial fungal growth covers the surface of the plant.

  • Powdery mildews are a group of related fungi which attack a wide range of plants, causing a white, dusty coating on leaves, stems… (310 more words) …

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