Question

Which of the following is not an important condition needed for seeds to germinate?

• A. Temperature
• B. Water
• C. Light
• D. None of the above

Answer 1

The correct option is D None of the above

Germination may also be defined as protrusion of embryonic axis from the seed to resume growth. The external factors that affect seed germination are as follows:

(1) Temperature- The effect of temperature is primarily on the physiological processes going on within the seed during germination. Many seeds fail to germinate at lower temperature.

(2) Water- The first step in germination is the imbibition of water. It causes the seed to swell and facilitates bursting of the seed coat.

(3) Light- There are many seeds which respond to light for germination and these are said to be photoblastic. The quality of light also influences the rate of germination.

Thus temperature, water, and light all are important conditions needed for seeds to germinate. Hence option D is the correct answer.