NEET TEST SERIES 151 BIOLOGY

1. Which is less general in characters as compared to genus?

(a) Family
(b) Class
(c) Division
(d) Species

2. Which one is not a hot spot of India?

(a)Western Ghats
(b)Aravalli Hills
(c)Indo-Burma
(d)Himalaya

3. A cell organelle containing hydrolytic enzyme is:

(a) Mesosome
(b) Lysosome
(c) Microsome
(d) Ribosome

4. Ovary is half-inferior in the flowers of:

(a) Cucumber
(b) Guava
(c) Plum
(d) Brinjal

5. In which one of the following processes, carbon dioxide is not released?

(a) Aerobic respiration in animals
(b) Alcoholic fermentation
(c) Lactate fermentation
(d) Aerobic respiration in plants

6. In Bt Cotton, the Bt toxin present in plant tissue as protoxin is converted into active toxin due to:

(a) Alkaline pH of the insect gut
(b) Acidic pH of the insect gut
(c) Action of gut microorganism
(d) Presence of conversion factors in insect gut

7. Which of the given part of oxysome is a peripheral membrane protein and contains the site for ATP synthesis?

(a) Headpiece
(b) Base
(c) Stalk
(d) F₀– part

8. The parasitic fungus on mustard plant is

(a) Albugo
(b) Ustilago
(c) Puccinia
(d)Colletotrichum

9. Chiasmata become clearly visible during …….. stage.

(a) diplotene
(b) metaphase-I
(c) anaphase-
(d) pachytene

10. Place the following event of translation in the correct sequence:
(i) Binding of met-tRNA to the start codon.
(ii) Covalent bonding between two amino acids.
(iii) Binding of second tRNA.
(iv) Joining of small and large ribosome subunits.

(a) iii, iv, i, ii
(b) i, iv, iii, ii
(c) iv, iii, ii, i
(d) ii, iii, iv, i

11. PGA as the first carbon dioxide fixation product was discovered in photosynthesis of

(a) Gymnosperm
(b) Angiosperm
(c) Alga
(d) Bryophyte

12. Swiss cheese is ripened with the help of bacterium:

(a) Penicillium roqueforti
(b) Penicillium camembertii
(c) Lactobacillus
(d)Propionibacterium sharmanii

13. The cutting of DNA at specific locations became possible with the discovery of:

(a) Restriction enzymes
(b) Probes
(c) Selectable markers
(d) Ligases

14. Read the following statements and select the incorrect one.

a) Chloroplast has 70S ribosomes.
b) Nucleolus is not bound by any membrane.
c) RER helps in synthesis of fats and proteins.
d) Lysosome contains hydrolytic enzymes.

15. Which of the given character of pea plants is seen only in pure lines?

(a) Round seeds
(b) Yellow pods
(c) Full Pods
(d) Violet flowers

16. A pair of plants which can prevent both autogamy as well as geitonogamy is:

(a) Cucurbits and coconut
(b) Coconut and papaya
(c) Cucurbits and date palm
(d) Date palm and papaya

17. Read the following statements.
Statement A: In primary structure of a protein, the left end is represented by the first amino acid and the right. end by the last amino acid.
Statement B: In a polysaccharide chain, the right end is called the reducing end and the left end is called the non-reducing end.
Choose the correct option:

(a) Both the statements are correct
(b) Both the statements are incorrect
(c) Statement A is correct but statement B is incorrect
(d) Statement A is incorrect but statement B is correct

18. Thermococcus, Methanococcus and Methanobacterium exemplify:

a) Bacteria that contain a cytoskeleton and ribosomes
b) Archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled.
c) Archaebacteria that contain protein homologous to eukaryotic core histones.
d) Bacteria whose DNA is relaxed or positively super-coiled but which have a cytoskeleton as well as mitochondria

19. The outermost layer of macromolecules in the prokaryotic cell envelope is………

(a) cell wall
(b) cell membrane
(c) glycocalyx
(d) peptidoglycan

20. A typical angiosperm anther has 1200 pollen grains. How many pollen mother cells must have been there to produce them?

(a) 200
(b) 400
(c) 300
(d) 600