Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Homozygous purelines in cattle can be obtained by
(a) When closely related species of same organisms are crossed continuously for few successive generations, it results in accumulation of recessive characters thus homozygous purelines are obtained.
Interspecific hybridisation is the mating of
(b) The interspecific hybridisation is the mating or cross between two different related species belonging to same genus.
Among the following edible fishes, which one is a marine fish having rich source of omega-3 fatty acids?
(d) Mackerel is a marine fish having rich quality of omega-3 fatty acid.
A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called
(d) Ley farming is a system of rotating crops with legumes or grass pasture in order to improve soil structure and fertility and also to disrupt pest and disease life cycles.
A technique of micropropagation is
Somatic embryogenesis ia a technique of micropropagation. Development of embryo like structure from explant by the method of tissue culture is called somatic embryogenesis.
Which of the following enhances or induces fusion of protoplasts?
(b) Polyethylene glycol(PEG) and sodium nitrate enhances fusion of protoplasts.
In vitro clonal propogation in plants characterised by
(a) RAPD stand for Random amplified polymorphic DNA. It is a type of PCR reaction, but the segments of DNA that are amplified are random. Often, PCR is used to amplify a known DNA sequence.
An alga which can be employed as food for human being is
(b) Chlorella is an attractive potential food source now-a-days because it is high in protein and other essential nutrients. When dried, it contains about 45% protein, 20% fat, 20% carbohydrate, 5% fibre and 10% minerals along with vitamines. It is mainly used as a food supplement for astronauts.
To obtain virus-free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken?
(c) Both apical and axillary meristems are free of virus for the healthy plant cultivation because of strong interferon activity in this region. These tissues form a protective impermeable covering around themselves, which is non-penetrable by any pathogen Hence, these tissue are used in the production of diseased free plants by tissue culture.
In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called
(d) It is called germplasm collection or the collection of variability. Selection of superior recombinants means selection of the best plant from the whole lot by visual examination and collecting their seeds for growing in field. Cross hybridisation is the method of combining the characters of different plants together. The selection and evolution are the main steps of hybridisation.
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every NEET question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.