IFS (Forests Services) Botany (Mains): Questions 117 - 125 of 287

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Question number: 117

» Cryptogams » Pteridophytes

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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 known to occur in India.

  • The total numbers of species present

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Question number: 118

» 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: Mint (Paper 1, Section B)

Question number: 119

» Angiosperms » Solanaceae

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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: Floral diagram of Solanaceae (Paper 1, Section B)

Question number: 120

» Cell Biology » Techniques

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Appeared in Year: 2013

Short Answer Question▾

Write in Short

Write short notes on: Freeze-fracture technique

Question number: 121

» Cell Biology » Cell Adhesion

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Appeared in Year: 2013

Short Answer Question▾

Write in Short

Write Short Notes on: Extrinsic and Intrinsic proteins

Question number: 122

» Cell Biology » ER

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Describe the structure and functions of Endoplasmic Reticulum.

Explanation

  • Definition: The electron microscope reveals an extensive membrane system in the cytoplasm is called endoplasmic reticulum (ER).

  • The word endoplasmic reticulum was used for a lace-like network of tubules and vesicles observed by Porter, Claude and Fullam in 1945 in the first electron micrograph of cell.

    Structure:

  • Endoplasmic reticulum is various form

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Question number: 123

» Cell Biology » Prokaryotic and Eukaryotic Cells

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Appeared in Year: 2013

Short Answer Question▾

Write in Short

Write Short Notes on: Ultrastructure of Golgi apparatus and its chemical constituents

Question number: 124

» Plant Breeding, Biotechnology and Biostatistics » Heterosis Breeding

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Appeared in Year: 2013

Essay Question▾

Describe in Detail

Write short notes on: Heterosis

Explanation

Definition: Heterosis is defined as the improvement in performance by individual offspring form the crossing over the performance of the parent population and increase in growth, size, yield or other characters in hybrids over those of the parents.

The increased productivity or superiority over the parents is known as Heterosis or hybrid vigour.

Hist

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Question number: 125

» Physiology and Biochemistry » Photosynthesis

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Appeared in Year: 2013

Short Answer Question▾

Write in Short

Write short notes on each of the following: Phytochrome

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