Question

If a tree flowers thrice in a year in October, January
and July in northen India, the plant is -
(1) Photo and thermo sensitive
(2) Photo and thermo insensitive
(3) Photosensitive but thermo insensitive
(4) Thermo sensitive but photo insensitive​

Answer 1

Answer:

Flowering in plant is dependent on two factors, photoperiodism and vernalization.  Vernalization is flowering of plants on exposure to prolonged period of low temperature. Photoperiodism is flowering in plants in response to change in day length. In the given example, flowering is taking place during any part of the year. Hence, the plant is not sensitive to light period. 

Thus, the correct answer is option 4

Answer 2

Answer:

4

Explanation:

If this tree having flower in january(cold in norther india)..so its simply means its independent on thrmal...but photo sensitive dependent.