NEET TEST SERIES 117 BIOLOGY

1.   Statement I: The movement of electrons is downhill, in terms of redox potential scale in electron transport chain
     Statement II: The electrons are used up as they pass through the electron transport chain. In the light of the above statements, choose the correct answer from the options given below:

(a) Both Statement I and Statement II are incorrect
(b) Statement I is correct but Statement II is incorrect
(c) Statement I is incorrect but Statement II is correct
(d) Both Statement I and Statement II are correct

2. Conservation of biodiversity due to services like provision of pollinators and climate regulation is an example of

(a). Narrowly utilitarian
(b). Broadly utilitarian
(c). Ethical utilitarian
(d). None of these133.

3. Match column-l with column-ll and select the correct option from the codes given below:

4. Match column-l with column-ll and select the correct answer using the codes given below:

5. Match the following and choose the correct option:

6. Diversity in the type of beaks of finches adapted to different feeding habits on the Galapagos Islands, as observed by Darwin, provides evidence for

(a) intraspecific variations
(b) intraspecific competition
(c) interspecific competition
(d) origin of Species by natural selection

7. A man having a genotype WwXxYxZz can produce a number of genetically different sperms and a women of genotype PpQQRrSS can generate B number of genetically different eggs. Determine the value of A and B.

(a) A=8, B=4
(b) A=16, B=4
(c) A=32, B=8
(d) A=4, B=8

8. Plasmid has been used as vector because to

(a) both its ends show replication.
(b) it can move between prokaryotic and eukaryotic cells.
(c) It transfer the piece of DNA attached to it.
(d) it has antibiotic resistance gene

9.   Statement I: Ciliary movements are observed in internal tubular organs.
        Statement II: About 80% of the body weight of a human adult is contributed by muscles.

(a) Both Statement I and Statement II are incorrect
(b) Statement I is correct but Statement II is incorrect
(c) Statement I is incorrect but Statement II is correct
(d) Both Statement I and Statement II are correct

10. Read the following statements regarding the various techniques used in cancer detection:

(i) Cancer detection is based on biopsy and histopathological studies of the tissues and the blood and bone marrow tests for increased cell counts in case of leukemia.

(ii) In biopsy, a piece of the suspected tissue cut into thin sections is stained and examined under microscope by the pathologist.

(iii) Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs.

(iv) Computed tomography uses strong magnetic fields and non-ionising radiations to detect physiological changes in living tissues.

(v) Early detection of cancer is essential as it allow the disease to be treated successfully.

Which of the following statement are incorrect?

(a) (i) and (iii)
(b) (ii), (iv) and (v)
(c) (iii) and (iv)
(d) Only (iv)

11.  Assertion (A): STDs are transmitted through sexual intercourse
        Reason (R): STDs can be prevented by using barrier contraceptives like condoms.

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

12.  Statement I: Increased permeability of Na⁺ ions due to the rise in stimulus is short lived.
        Statement II: The resting membrane potential of membrane at the site of excitation is restored by Na* and Ci~ ions.

(a) Both Statement I and Statement II are incorrect
(b) Statement I is correct but Statement II is incorrect
(c) Statement I is incorrect but Statement II is correct
(d) Both Statement I and Statement II are correct

13. Pick out the correct statement.

(a) Chitin is a homopolymer.
(b) Collagen is the most abundant protein in the whole of the biosphere.
(c) Proteins are linear chains of amino acids linked by peptide bonds.
(d) In a polysaccharide, the individual monosaccharides are linked by a phosphodiester bond.

14. Match the column-l with column-ll and choose the correct option.

15. Match the items given in column-l with those in column-ll and select the correct option given below.

16. Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin ‘A’ deficiency?

(a) ‘Flavr Savr’ tomato
(b) Canola
(c) Golden rice
(d) Bt-Brinjal

17. What is common among silverfish, scorpion, crab and honey bee?

(a) Compound eyes
(b) Poison gland
(c) Jointed legs
(d) Metamorphosis

18. Mark the unmatched one

(a) Neutrophils – Phagocytic
(b) Basophils – Secrete histamine
(c) Acidophils – Secrete heparin
(d) Lymphocytes – Secrete antibodies

19. If for some reason, the vasa efterentia in the human reproductive system get blocked, the gametes will not be transported from

(a) testes to epididymis
(b) epididymis to vas deferens
(c) ovary to uterus
(d) vagina to uterus

20. Proximal and distal convoluted tubules are parts of

(a) Seminiferous tubules
(b) Nephron
(c) Oviduct
(d) Vas deferens