NEET TEST SERIES 96 BIOLOGY

1. The term ‘precursor of auxin’ refers to

a) A a compound that activates auxin’s biological function
b) a raw material converted into auxin through biochemical processes
c) a chemical that inhibits auxin’s action in plants
d) the final active molecule produced after auxin synthesis

2. Given below are a few floral diagrams of some well known plants. Choose floral formula from these diagrams.

3.    Assertion: Trachea is the common passage for food and air.
        Reason: Cartilaginous ring of trachea prevents its collapse during breathing.

a) Both assertion and reason are true and reason is the correct explanation of assertion.
b) Both assertion and reason are true but reason is not the correct explanation of assertion.
c) Assertion is true but reason is false.
d) Assertion is false but reason is true.

4. The alveolar epithelium in the lung is

a) Non-ciliated columnar
b) Non- ciliated squamous
c) Ciliated columnar
d) Ciliated squamous

5. Reduction in pH of blood will

a) Decrease the affinity of haemoglobin with oxygen
b) release bicarbonate ions by the liver
c) reduce the rate of heartbeat
d) reduce the blood supply to the brain

6. Assertion (A): In barrier method, ovum and sperms are prevented from physical meetings       
    Reason (R): Barrier methods are used during coitus, to prevent the entry of ejaculated semen into the female reproductive tract

a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true

7. The following figure shows the stage of an embryo formed from IVF. Identify the stage and the procedure which is used to transfer this stage to carry out the further process of in vitro fertilization.

a) Stage: Morula; Procedure: IUI
b) Stage: Gastrula; Procedure: ZIFT
c) Stage: Blastocyst; Procedure: IUT
d) Stage: Secondary oocyte; Procedure: ICSI

8. The maximum number of species among vertebrates are

a) Amphibians
b) Fishes
c) Reptiles
d) Mammals

9. Respiratory track is an example of

a) Cellular barrier
b) Cytokine barrier
c) Physical barrier
d) Physiological barrier

10. A patient suffers rejection after receiving donor’s kidney. Which of the following is responsible for this

a) T_H cells
b) Memory cells
c) Plasma cells
d) T_K cells

11. Identify the given diagram and its effect

a) Cannabinoid – Hallucination
b) Morphine – Painkiller
c) Cocaine – Analgesic
d) Smack – CNS depressant

12. Drugs like griseofulvin and miconazole are used in the treatment of

a) Ascariasis
b) Hansen’s disease
c) Ringworm
d) Poliomyelitis

13. Coenocytic mycelium is seen in

a) Deuteromycetes
b) Phycomycetes
c) Ascomycetes
d) Basidiomycetes

14. Study the given pedigree chart and select the mode of inheritance

a) Autosomal recessive
b) Autosomal dominant
c) Y-link recessive
d) X-link dominant

15. Male is haploid in

a) Honeybee
b) Cockroach
c) Drosophila
d) Grasshopper

16. Select the homologous pair from the following

a) Scrotum and labia majora
b) Glans penis and labia minora
c) Penis shaft and mons pubis
d) Testis and clitoris

17. The characteristic feature of luteal phase of menstrual cycle is

a) Endometrium breaks down
b) FSH and estrogen secretion increases
c) Both LH and FSH attain peak level
d) Corpus luteum secretes progesterone

18. Solid ball of 8-16 cells formed by cleavage

a) Blastula
b) Morula
c) Gastrula
d) Blastomere

19.  Assertion (A): Myometrium is important component of uterus
      Reason (R): Myometrium produces strong contractions during parturition

a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true

20. Read the following statements and select the incorrect one

a) Both fat and fascia help to protect the kidney
b) A kidney has about 10 lakh nephrons
c) The concave side of each kidney faces outwards and convex side inwards
d) Male urethra opens out at the tip of the penis by urinogenital aperture