NEET TEST SERIES 152 BIOLOGY

1. Match the following microbes with the Microbes Product:
A. Aspergillus niger                 i. Lactic acid
B. Acetobacter aceti                ii. Butyric acid
C. Clostridium butylicum      iii. Acetic acid
D. Lactobacillus                       iv. Citric acid

(a) A-ii, B-iii, C-iv, D-i
(b) A-ii, B-iv, C-iii, D-i
(c) A-iv, B-iii, C-ii, D-i
(d) A-iv, B-i, C-iii, D-ii

2. Which of the following is not true for an eukaryotic cell?

a) Cell wall is made up of peptidoglycan.
b) 80S type of ribosomes are present in the cytoplasm.
c) Mitochondria contain circular DNA.
d) Membrane bound organelles are present.

3. What is the genotypic ratio in test cross for a dihybrid cross if two genes are completely linked?

(a) 1:1:1:1
(b) 1:1
(c) 9:3:3:1
(d) 3:1

4. An organic non-protein substance bound to an enzyme and essential for its activity is:

(a) Coenzyme
(b) Apoenzyme
(c) Holoenzyme
(d) Isoenzyme

5. Plants which produce characteristic pneumatophores and show vivipary belong to:

(a) Mesophytes
(b) Halophytes
(c) Psammophytes
(d) Hydrophytes

6. In the DNA of an organism a total number of 5386 nucleotides were present. The proportion of different bases were: Adenine 29%; Guanine = 17%; Cytosine = 32%, Thymine 17%. Considering the Chargaff’s rule, it can be concluded that:

(a) It is a single stranded linear RNA.
(b) It is single stranded linear DNA.
(c) It is a double stranded linear DNA.
(d) It is a double stranded circular DNA.

7. In genetic engineering, the antibiotics are used:

(a) As selectable markers,
(b) To select healthy vectors.
(c) As sequences from where replication starts.
(d) To keep the culture free of infection.

8. Which one of the following organisms is not a eukaryote?

(a) Paramecium caudatum
(b) Escherichia coli
(c) Euglena viridis
(d) Amoeba proteus

9. The end products of fermentation is
(1) CO₂                          (2) Ethanol
(3) Oxygen             (4) Acetaldehyde

(a) (1) only
(b) (1) and (2) only
(c) (2) and (3) only
(d) (3) and (4) only

10. The osmotic expansion of a cells kept in water is chiefly regulated by:

(a) Mitochondria
(b) Vacuoles 
(c) Plastids
(d) Ribosomes

11. Feedstock for biodiesel can primarily be obtained from

(a) Nymphaea
(b) Abelmoschus
(c) Triticum
(d) Jatropha

12. Pteridophytes and Bryophytes differ in having:

a) Spermatozoids
b) Conducting system
c) Separate gametophytes
d) Archegonia

13. There are three major types of RNAs present in bacteria and each of them has specific functions.
i) mRNA-Provides the template for translation.
(ii) tRNA-Brings polypeptide chain and reads the transcription unit.
(iii) rRNA – Plays structural and catalytic role during translation.
Identify the type(s) of RNA with its incorrect matching of function

(a) (i) and (ii)
(b) only (i)
(c) (ii) and (iii)
(d) only (ii)

14. Which of the following pairs is incorrectly matched?

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

15. Which one of the following statements is correct about Bryophytes?

a) Sporophyte and gametophyte generations are independent.
b) Sporophyte is partially dependent upon gametophyte.
c) Gametophyte is dependent upon Sporophyte.
d) Inconspicuous gametophyté is present.

16. Specialised epidermal cells surrounding the guard cells are called:

(a) Lenticels
(b) Complimentary cell
(c) Subsidiary cells
(d) Bulliform cells

17. Which type of diversity is in terms of shown by Rauwolfia vomitoria the potency and concentration of reserpine that it produces?

(a) genetic diversity
(b) species diversity
(c) ecological diversity
(d) biodiversity

18. Which of the following component of phloem is made up of sclerenchymatous cells?

(a) Companion cells
(b) Bast fiber
(c) Sieve tubes
(d) Xylem fiber

19. Which is the basic requirement for any type of ecosystem. to function and sustain?

(a) Constant output of solar energy
(b) Constant input of solar energy
(e) Organic substances
(d) Organic substances dissolved in water

20. Which is the basic requirement for any type of ecosystem to function and sustain?

(a) Constant output of solar energy
(b) Constant input of solar energy
(c) Organic substance
(d) Organic substances dissolved in water.