Quiz-19 STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

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STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION Quiz-19

Dear Readers,

NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions. About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus. Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced. .

Q1. Emasculation of flowers is carried out through removal of:

•  Sigma
•  Sepals and petals
•  Anthers
•  Entire organism

Solution
Emasculation is the process of removal of anthers in bisexual flowers to prevent self- pollination.

Q2. Nosemia sp. a protozoan produces diseases in:

•  Silk moth
•  Honey bee
•  Both silk moth and honey bee
•  Lac insect

Solution
Nosema locustae (Protozoa: Microsporidia) Among the protozoan diseases of grasshoppers, a slow-acting species known as Nosema locustae was selected for commercial development to provide a biological insecticide for suppression of grasshoppers.

Q3. In mutation breeding, mutations are induced by using chemical like

•  Aniline
•  Alcohol
•  Graphene
•  Both (a) and (b)

Solution
Mutation breeding is defined as the process of breeding by artificially inducing mutations using chemicals (like aniline, nitrous acid mustard gas, etc.) or radiation (like gamma rays, X-rays, UV rays, etc.)

Q4. A hybrid variety produced, having more meat producing capacity, in chickens is:

•  Broilers
•  Plymoth rock
•  White Cornish
•  New Hemisphere

Solution
A broiler is any chicken that is bred and raised specifically for meat production.

Q5. For producing protoplasts from pant cells, which of the following are required?

•  Amylase and pectinase
•  Cellulase and proteinase
•  Cellulase and pectinase
•  Cellulase and amylase

Solution
The cell wall is made up of polysaccharides like Cellulose and Pectin. The cell wall of the plant cells can be removed by digestion with a combination of pectinase and cellulase to obtain protoplast.

Q6. The host crop plants may be resistant to insects pests due to the I. morphological characteristics II. biochemical characteristics III. physiological characteristics Choose the correct option

•  I and II
•  II and III
• I and III
•  I, II and III

Solution
The host crop plant may be resistant to insect pests due to morphological, biological and physiological characteristics For Examples (i) Hairy leaves of plants resistance to jassids in cotton and cereal leaf beetle in wheat (ii) In maize, high aspartic acid, low nitrogen and sugar content protect them from stem borers

Q7. The process of fusion of protoplast of somatic cells obtained from different varieties or species of plant on a suitable nutrient medium in vitro to develop a somatic hybrid is called

•  Somatic hybridization
•  Cross hybridization
•  Intravarietal hybridization
•  Interspecific hybridization

Solution
The process of fusion of protoplast of somatic cells obtained from different varieties or species of plant on a suitable nutrient medium in vitro to develop a somatic hybrid is called somatic hybridization

Q8.Ishingless is obtained from:

•  Liver of frog
•  Scales of fishes
•  Air bladder of fishes
•  Skin of shark

Solution
obtained from the air bladders of certain fish, especially the sturgeon: used in glue and jellies and as a clarifying agent.

Q9. In tissue culture, roots can be induced by

•  Lower concentration of cytokinin and higher concentration of auxins
•  Only cytokinin and no auxins
•  No cytokinin and only auxins
•  Higher concentration of cytokinin and lower concentration of auxins

Solution
In tissue culture, shoot regeneration is promoted by cytokinin, and root generation is promoted by auxin like NAA (Naphthalene Acetic Acid). An excess of auxin promotes root regeneration, whereas that of cytokinin promotes shoot regeneration. Roots regenerates from the lower end of these shoots to give complete plantlets

Q10. An old breeding technique is:

•  Introduction
•  Selection
•  Mutation breeding
• Hybridisation

Solution
Oldest technique of plant breeding is selection which was used in Germany to improve sugar beets, rye and wheat. In this method, plants with desirable characteristics are selectively grown and those with undesirable characteristics are removed out.