Sample Paper

There are 25 sample questions taken from the Year 2021 NEET Entrance test Paper

Q1. Mutations in plant cells can be induced by:

(1) Zeatin

(2) Kinetin

(3) Infrared rays

(4) Gamma rays

Answer: (4)

Q2. Which of the following is an incorrect statement?

(1) Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm.

(2) Mature sieve tube elements possess as conspicucous nucleus and usual cytoplasmic organelles.

(3) Microbodies are present both in plant and animal cells.

(4) The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm.

Answer: (2)

Q3. The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is

(1) Cleistogamy

(2) Xenogamy

(3) Geitonogamy

(4) Chasmogamy

Answer: (2)

Q4. The factor that leads to the Founder effect in a population is:

(1) Genetic drift

(2) Natural selection

(3) Genetic recombination

(4) Mutation 

Answer: (1)

Q5. Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as

(1) Heterosporous

(2) Homosorus

(3) Heterosorus

(4) Homosporous

Answer: (1)

Q6. The production of gametes by the parents, formation of zygotes, the and plants, can be understood from a diagram called:

(1) Net square

(2) Bullet square

(3) Punch square

(4) Punnett square

Answer: (4)

Q7. Diadelphous stamens are found in :

(1) China rose and citrus

(2) China rose

(3) Citrus

(4) Pea

Answer: (4)

Q8. Gemmae are present in:

(1) Some Liverworts

(2) Mosses

(3) Pteriodophytes

(4) Some Gymnosperms

Answer: (1)

Q9. A typical angiosperm embryo sac at maturity is:

(1) 8-nucleate and 8-celled

(2) 8-nucleate and 7-celled

(3) 7-nucleate and 8-celled

(4) 7-nucleate and 7-celled

Answer: (2)

Q10. In spite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?

(1) Predation

(2) Resource partitioning

(3) Competitive release

(4) Mutalism 

Answer: (2)

Q11. During the purification process for recombinant DNA technology, the addition of chilled ethanol precipitates out:

(1) Polysaccharides

(2) RNA

(3) DNA

(4) Histones 

Answer: (3)

Q12. DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as:

(1) Bright blue bands

(2) Yellow bands

(3) Bright orange bands

(4) Dark red bands

Answer: (3)

Q13. Which of the following algae produce Carrageen?

(1) Blue-green algae

(2) Green algae

(3) Brown algae

(4) Red algae

Answer: (4)

Q14. Plants follow different pathways in response to the environment or phases of life to form different kinds of structures. This ability is called

(1) Maturity

(2) Elasticity

(3) Flexibility

(4) Plasticity

Answer: (4)

Q15. Which of the following plants is monoecious?

(1) Cycas circinalis

(2) Carica papaya

(3) Chara

(4) Marchantia polymorpha

Answer: (3)

Q16. The site of perception of light in plants during photoperiodism is:

(1) Leaf

(2) Shoot apex

(3) Stem

(4) Axillary bud

Answer: (1)

Q17. The amount of nutrients, such as carbon, nitrogen, phosphorous, and calcium present in the soil at any given time, is referred as:

(1) Standing crop

(2) Climax

(3) Climax community

(4) Standing state

Answer: (4)

Q18. Which of the following stages of meiosis involves division of centromere?

(1) Telophase II

(2) Metaphase I

(3) Metaphase II

(4) Anaphase II

Answer: (4)

Q19. The first stable product of \(\mathrm{CO_2}\) fixation in sorghum is:

(1) Phosphoglyceric acid

(2) Pyruvic acid

(3) Oxaloacetic acid

(4) Succinic acid 

Answer: (3)

Q20. Which of the following statements is not correct?

(1) Pyramid of numbers in a grassland ecosystem is upright.

(2) Pyramid of biomass in the sea is generally inverted.

(3) Pyramid of biomass in the sea is generally upright

(4) Pyramid of energy is always upright. 

Answer: (3)

Q21. Which of the following algae contains mannitol as reserve food material?

(1) Ulothrix

(2) Ectocarpus

(3) Gracilaria

(4) Volvox 

Answer: (2)

Q22. When gene targetting involving gene amplification is attempted in an individual’s tissue to treat disease, it is known as :

(1) Safety testing

(2) Biopiracy

(3) Gene therapy

(4) Molecular diagnosis 

Answer: (3)

Q23. In the equation GPP – R =NPP R represents:

(1) Respiration losses

(2) Radiant energy

(3) Retardation factor

(4)Environment factor

Answer: (1)

Q24. When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as:

(1) Acrocentric

(2) Metacentric

(3) Telocentric

(4) Sub-Metacentric 

Answer: (2)

Q25. The plant hormone used to destroy weeds in a field

(1) IBA

(2) IAA

(3) NAA

(4) 2,4-D

Answer: (4)