Assertion (A) is true, as temperature-dependent sex determination occurs in many reptiles, where the temperature during incubation affects the offspring's sex.
Reason (R) is also true, as in some animals like reptiles, sex determination is not genetic but environmental.
Therefore, the correct answer is option (1).
| Case No. | Lens | Focal Length | Object Distance |
|---|---|---|---|
| 1 | \(A\) | 50 cm | 25 cm |
| 2 | B | 20 cm | 60 cm |
| 3 | C | 15 cm | 30 cm |
Name the part performing the following functions in the human male reproductive system:
(a) Carries sperm
(b) Production of male gametes
(c) Whose secretion makes the transport of sperm easier
(d) Provides suitable temperature for sperm formation
Select the option having correct matching of the organism given in Column I with the mode of reproduction in Column II: Column I {0.2cm} 
Why are testes in human males located outside the abdominal cavity in scrotum?
| Case No. | Lens | Focal Length | Object Distance |
|---|---|---|---|
| 1 | \(A\) | 50 cm | 25 cm |
| 2 | B | 20 cm | 60 cm |
| 3 | C | 15 cm | 30 cm |