(i) Who discovered photoperiodism?
(ii) Who gave the term phytochrome? What is its unique character?
(iii) Given three methods of seed dormancy.
(iv) Short out the e.g., of SDP and LDP from following.
(a) Radish (b) Spinach (c) Bryophyllum (d) Rice (e) Oat (f) Chrysanthemum

Study the information carefully and answer the questions given below. (i) Eleven students A, B, C, D, E, F, G, H, I, J and K are sitting in a row of the class facing the teacher (ii) D, Who is to the immediate left of F, is second to the right of C. (iii) A, who is second to the right of E, Who is at one of the ends. (iv) J is the immediate neighbour of A and B and third to the left of G. (v) H is to the immediate left of D and third to the right of I. Who is sitting in the middle of the row ?

Ten students A, B, C, D, E, F, G, H, I and J Are sitting in a row facing west. (i)B and F are not sitting on either of the edges. (ii) G is sitting to the left of D and H is sitting to the right of J. (iii) There are four persons between E and A. (iv) I is to the right of B and F is to the left of D. (v) J is in between A and D and G is in between E and F (vi) There are two persons between H and C. If G and A interchange their positions , then who become the immediate neighbours of E ?

Ten students A, B, C, D, E, F, G, H, I and J Are sitting in a row facing west. (i)B and F are not sitting on either of the edges. (ii) G is sitting to the left of D and H is sitting to the right of J. (iii) There are four persons between E and A. (iv) I is to the right of B and F is to the left of D. (v) J is in between A and D and G is in between E and F (vi) There are two persons between H and C. Who is sitting at the seventh place counting from left ?

Ten students A, B, C, D, E, F, G, H, I and J Are sitting in a row facing west. (i)B and F are not sitting on either of the edges. (ii) G is sitting to the left of D and H is sitting to the right of J. (iii) There are four persons between E and A. (iv) I is to the right of B and F is to the left of D. (v) J is in between A and D and G is in between E and F (vi) There are two persons between H and C. Who among the following is definitely sitting at one of the ends ?

Ten students A, B, C, D, E, F, G, H, I and J Are sitting in a row facing west. (i)B and F are not sitting on either of the edges. (ii) G is sitting to the left of D and H is sitting to the right of J. (iii) There are four persons between E and A. (iv) I is to the right of B and F is to the left of D. (v) J is in between A and D and G is in between E and F (vi) There are two persons between H and C. Who is sitting second left of D ?

Ten students A, B, C, D, E, F, G, H, I and J Are sitting in a row facing west. (i)B and F are not sitting on either of the edges. (ii) G is sitting to the left of D and H is sitting to the right of J. (iii) There are four persons between E and A. (iv) I is to the right of B and F is to the left of D. (v) J is in between A and D and G is in between E and F (vi) There are two persons between H and C. Who are immediate neighbours of I ?

Study the information carefully and answer the questions given below. (i) Eleven students A, B, C, D, E, F, G, H, I, J and K are sitting in a row of the class facing the teacher (ii) D, Who is to the immediate left of F, is second to the right of C. (iii) A, who is second to the right of E, Who is at one of the ends. (iv) J is the immediate neighbour of A and B and third to the left of G. (v) H is to the immediate left of D and third to the right of I. Which of the following groups of friends is sitting to the right of G ?

Find the equivalent resistance of the circuit given in figure between the following point : (i) A and B (ii) C and D (iii) E and F (iv) A and F (v) A and C

Study the information carefully and answer the questions given below. (i) Eleven students A, B, C, D, E, F, G, H, I, J and K are sitting in a row of the class facing the teacher (ii) D, Who is to the immediate left of F, is second to the right of C. (iii) A, who is second to the right of E, Who is at one of the ends. (iv) J is the immediate neighbour of A and B and third to the left of G. (v) H is to the immediate left of D and third to the right of I. In the above sitting arrangement, which of the following statements is superfluous?