NEET 2020 Online Mock Test Medical Student

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Biology

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Question 1. In a longitudinal section of root starting from the tip upward, the four zones occur in the following order

 Cell division, cell enlargement, cell maturation, root cap

 Root cap, cell division, cell maturation, cell enlargement

 Root cap, cell division, cell enlargement, cell maturation

 Cell division, cell maturation, cell enlargement, root cap

Question 2.The process used in conversion of private to acetyl CoA is

 Oxidative dephosphorylation

 Oxidative dehydrogenation

 Oxidative dehydration

 Oxidative decarboxylation

Question 3. Cytoplasmic inheritance is also called

 Maternal inheritance

 Cytoplasmic association

 Clonal inheritance

 None of these

Question 4. Regulations governing movement of diseased plant material are called

 Quarantine

 Plant regulation

 Rotation

 Crop protection

Question 5.  The living steady state has self regulatory mechanism which is

 Homeostasis

 Feedback mechanism

 Homozygous

 Homeotherms

Question 6. In monocot embryo the radicle is produced by

 Epiblast

 Suspensor

 Terminal cell

 Middle cell

Question 7. A red alga devoid of red colour is

 Batrachospermum

 Porphyra

 Chondrus

 Gelidium

Question 8. Androgenic haploids are used for

 Induction of mutations

 Preparation of homozygous diploids

 Raising stock for micropropagation

 Knowing effect of all genes

Question 9.  Centromere is part of

 Nucleolus

 Cytoplasmic organelles

 Ribosome

 Chromosome

Question 10. Mutation is a change that is

 Inherited only in F2 generation

 Inherited

 Responsible for plant growth

 Never inherited

Question 11 . Stethoscope was invented by

 Jenner

 Laennec

 Waksman

 Koch

Question 12. Which element is markedly effect somatic embroyogenes ?

 Under production of EPSP synthase

 Over production of EPSP synthase

 Postzygotic Fertilization barrier

 Overproduction of RNA polyperase

Question 13. Which of the following is not an insectivorous plant?

 Drosera

 Monotropa

 Utricularia

 Nepenthes

Question 14. Cristae occur in

 Nucleus

 Golgi body

 Mitochondria

 E.R.

Question 15. Which of the following is not found in Hydra?

 Cnidocyte

 Choanocyte

 Nerve cells

 Epithelio-muscular cells

Question 16. Smallest cell organelle is

 Lysosome

 Ribosome

 Glyoxysome

 Spherosome

Question 17. In confocal microscope, the specimen is illuminated by

 None of these

 Electron flow

 Laser beam

 UV ray

Question 18. Simplest stele is

 Stenostele

 Atactostele

 Dictyostele

 Protostele

Question 19. Viscum is

 Partial stem parasite

 Partial root parasite

 Total root parasite

 Total stem parasite

Question 20. Goblet cells are

 Multicellular glands

 Unicellular glands

 Dead keratinized cells.

 Stratified epithelium

Question 21. Bacteria and fungi growing on dead decaying organisms are

 Symbionts

 Saprophytes

 Parasites

 Commensals

Question 22. Marriage between colour blind man and normal woman shall result in

 Normal visioned female progeny

 Colour blind female progeny

 Normal visioned male and female progeny

 Colour blind male progeny

Question 23. Production of secondary metabolites requires the use of

 Auxiliary buds

 Protoplasts

 Apical meristm

 Cell suspension

Question 24. A fruit without seed is not possible in case of

 Grape

 Berry

 Pomegranate

 Orange

Question 25. Which ion accumulate in the guard cells at the time of opening of stomata ?

 K

 Mg

 Ca

 P

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