Important Questions for Biology NEET Class 11, Class 12

 

Name: _________________________Roll no. _________Class 12, Biology

1.      Jumping genes are called: (a) phasmids (b) plasmids (c) cosmids (d) transpozones

2.      Who proposed the cohesion theory of ascent of sap?: (a) Godlewski (b) JC Bose (c) Strasburger (d) Dixon and Jolly

3.      The source of EcoRI enzyme is: (a) bacteria (b) algae (c) plant (d) virus

4.      Ubisch bodies are formed in: (a) epidermis (b) endothecium (c) tapetum (d) integument

5.      Cleistogamy pollination is found in: (a)Viola (b) Papaya (c) Jamun (d) Cassia

6.      Female gametophyte is: (a) embryo  (b) embryo sac (c) endoderm (d) synergid cell

7.      Triple fusion results in the formation of: (a) seed     (b) embryo sac (c) endosperm (d) synergid cell

8.      Which plant forms many embryo sacs in the ovule? (a) Argemone  (b) Aristolochia (c) Casuarina (d) Calotropis

9.      Which pathway of the plant is the most resistant to absorbed water to reach the xylem tissue?:

(a) apoplast     (b) symplast  (c) membrane  (d) vacuolar

10.  Hydathodes are found: (a) on leaf edge (b) on upper epidermis of leaf (c) on lower epidermis of leaf (d) in bark

11.  The development of plant without fertilisation is called: (a) afertilisation (b) parthenogenesis (c) apomixis (d) micro-propagation

12.  The chemical used to mix in petrol and used as fuel is: (a) methanol (b) ethanol (c) LPG (d) propanol

13.  Red pepper’s hot flavour is due to the compound: (a) curcumin (b) capsaicin (c) thymol (d) anethole

14.  T1 plasmid is found in: (a) A tumefaciens (b) A rhizogenes (c) E coli (d) Bacillus thuringiensis

15.  Transpiration does not occur in : (a) leaf (b) stem (c) root (d) raw fruit

 

16.  Define respiratory quotient. __________________________________________________.

17.  Define totipotency.__________________________________________________________.

18.  Lock and Key theory was proposed by whom and when? ___________________________.

19.  Name two petro-plants. _____________________________________________________.

20.  Name two synthetic auxins. __________________________________________________.

21.  The full form of NADP is ____________________________________________________.

22.  The full form of RFLP is _____________________________________________________.

23.  What are cosmids? _________________________________________________________.

24.  What are the botanical name and the family name of castor? ________________________.

25.  Who discovered the recombinant DNA technology? _______________________________.

26.  What is pollen kit? __________________________________________________________.

27.  What is heterostyly? _________________________________________________________.

28.  On which plant did JC Bose work to explain ascent of sap? ___________________________.

29.  Who proposed the theory of active K⁺ ion? ________________________________________.

30.  In which form are Fe and Cl absorbed from the soil? ________________________________.

31.  Name of one non-protein enzyme. _______________________________________________.

32.  What is the first stable product of photosynthesis? __________________________________.

33.  Who propounded chemiosmotic theory? __________________________________________.

34.  Which hormones induce parthenocarpy? __________________________________________.

35.  Define explants. _____________________________________________________________.

36.  In which disease quinine is useful? ______________________________________________.

37.  All the substances produced due to photosynthesis are called__________________________.

38.  How is secondary nucleus formed? ______________________________________________.

39.  What is homogamy? __________________________________________________________.

40.  What is the shape of guard cell?_________________________________________________.